Musculoskeletal disorders Flashcards
Clinical manifestations of anterior glenohumeral shoulder dislocation
- Arm abducted, externally rotated** 2. “Squared off shoulder” is usually associated with recurrent dislocations
Anterior glenohumeral diagnosis
Axillary & “Y” view (this determines ant. vs. posterior)
Hill-Sachs lesion
Groove on humeral head
Bankart Lesion
Glenoid inferior rim fracture
Anterior glenohumeral shoulder dislocation management
- Reduction must r/o axillary nerve injury (pinprick over deltoid)*
Which type of dislocation is associated with seizures and shocks?
Posterior glenohumeral shoulder dislocation
Acromialclavicular joint dislocation (shoulder dislocation) most observed injury
Direct blow to adducted shoulder
Imaging done in acromioclavicular joint dislocation (shoulder dislocation)
X-ray with weights
Type 1 shoulder dislocation
normal CXR (ligamental sprain)
Type 2 shoulder dislocation
Slight widening AC ligament ruptured. Coraclavivular ligament sprained
Class III shoulder dislocation
Significant widening; both ligaments ruptured
Management of acromioclavicular joint dislocation
Brief sling immobilization, ice, analgesica, and ortho follow up. Type III may need surgery
SITS
- Supraspinatus*
- Infraspinatus
- Teres minor
- Subscapularis
What is tendonitis?
Inflammation usually associated with subacromial bursitis. Usually in adolescents-<40 years old.
Rotator cuff tear is seen most commonly in what population?
>40 years old. Usually results from trauma or chronic overuse.
ROM in rotator cuff injuries
There is usually anterior deltoid pain with decreased ROM, especially with overhead activities, internal rotation or abduction
In rotator cuff tears, what clinical manifestastions may be seen?
Weakness, atrophy, and continuous pain
Is active or passive ROM greater in rotator cuff injuries?
Active ROM
Pain with abduction >90 degrees suggest what?
Tendinopathy
“Empty can” test is used to test what?
Supraspinatus strength
Impingement tests are used to check what?
Subscapular nerve/ supraspinatus
Hawkins test description
Elbow/shoulder flexed @90 degrees with sharp anteiror shoulder pain with internal rotation
Neer test description
Arm fully pronated (thumb’s down) with pair during forward flexion (while should is held down to prevent shrugging). Supraspinatus test: pain with abduction v. resistance.
Subacromial lidocaine test
Distinguishes tendinopathy from tear. Normal strength with pain relief = tendinopathy. Persistent weakness with large tear
Management of tendinitis
Shoulder pendulum/wall climbing exercises*, ice, NSAIDs, physical activity
Rotator cuff tear management
Conservative: rehab, NSAIDs, intra-articular steroids, ROM preservation
Surgery if conservative doesn’t help
What is a common site for pathologic fx in metastatic breast CA?
Proximal humerus fractures
Clinical manifestations of proximal humerus fractures
Arm held in adducted position. Check deltoid sensation (to r/o brachial plexus injury)
With a humeral shaft fracture, what must be ruled out on physical exam?
Radial nerve injury (wrist drop)
Humeral shaft fracture management
“Sugar tong splint”, coaptation splint, sling/swathe. Ortho f/up in 24-48 hours
Complications with clavicle fractures
Pneumothorax, hemothorax, cloraclavicular ligament disruption (distal)
Clavicle fracture management
Mid 1/3: Arm sling 4-6 weeks in adults; ortho consult if proximal 1/3
What is adhesive capsulitis (frozen shoulder)?
Shoulder stiffness due to inflammation (esp. in hypothyroidism and DM)
Adhesive capsulitis (frozen shoulder) management
Rehab ROM therapy mainstay of tx. Anti-inflammatories, intraarticular steroid injection, heat
What is thoracic outlet syndrome?
Idiopathic compression of brachial plexus (95%), subclavian vein (5%) or subclavian artery (1%) as they exit narrowed space between shoulder girdle and 1st rib
Thoracic outlet syndrome: clinical manifestations (3)
- Nerve compression: pain/paresthesias to the forearm, arm, ulnar side of hand
- Vascular compression: Swelling/discoloration of the arm esp. with abduction of arm
- Physical examination: +Adson: loss of radial pulse** with head rotated to the affected side
Thoracic outlet syndrome: diagnosis
MRI
Thoracic outlet syndrome management
Controversial. PT 1st line, avoid strenuous activity. Ortho consult. +/- surgery
Supracondylar fractures are most common in what population?
Children aged 5-10
Supracondylar fracture: Diagnosis
abn. anterior humeral line on lateral view if displaced. Non-displaced–>ant. fat pad sign*
Anterior fat pad signifies what in children and adults?
Children: Supracondylar fracture
Adults: Radial head fracture
(They may also be seen as a normal variant if they are small and almost parallel to the humerus)
What are the complications with supracondylar fractures?
Median nerve & brachial artery injury –>Volkmann’s ischemic contracture*
Radial nerve injury
Supracondylar fractures management
Non-displaced: Splint
Displaced: ORIF. They should also be admitted and ortho should be consulted
Radial head fracture: Physical examination
Lateral (radial) elbow pain, inability to fully extend elbow
Radial head fracture: diagnosis
Notoriously difficult to see. Fat pad sign**: posterior or increased anterior
Radial head fractures: Management
Non-displaced –>sling, long arm splint 90 degrees
Displaced–>ORIF
Olecranon fracture complication
Ulnar nerve dysfunction**
Olecranon fracture: management
Nondisplaced–>Splint (90 degree flexion)
Displaced–>ORIF
Olecranon bursitis clinical manifestations (2)
- Abrupt “goose egg” swelling
- Limited ROM with flexion
What is a Monteggia fracture?
Proximal ulnar shaft fracture with anterior radial head dislocation
What nerve can be damaged with a Monteggia fracture?
Radial nerve
Monteggia fracture: management
ORIF
What is a Galeazzi fracture?
Mid-distal radial shaft fracture with dislocation of distal radio-ulnar joint (DRUJ)
Galeazzi fracture management (2)
- UNSTABLE! Needs ORIF
- Long arm splint; sugar tong splint
How to reduce a radial head subluxation (Nursemaid’s elbow)?
Pressure on radial hadi with supination and flexion
What is a Hutchinson fracture?
Radial styloid fracture (AKA Chauffer’s fracture)
What is the MOI with lateral epicondylitis (Tennis Elbow)?
Inflammation of tendon insertion of ECRB (extensor carpi radialis brevis muscle) due to repetitive pronation of forearm and excessive wrist extension.
Lateral epicondylitis clinical manifestations
Lateral elbow pain esp. with gripping, forearm pronation and wrist extension against resistance
Medial epicondylitis MOI
Inflammation of the pronator teres-flexor carpi radialis due to repetitive stress
How is the pain from medial epicondylitis reproduced?
Forcefully extending the elbow vs resistance with forearm supinated and wrist flexion against resistance
What is the most common type of elbow dislocation?
Posterior
Elbow dislocation: Management (3)
- EMERGENT reduction!
- Posterior splint @90 degrees x 7-10 d
- Unstable –> ORIF
What is Froment’s sign?
- It is a test that is used for cubital tunnel syndrome
- Ulnar nerve via adductor pollicus - pt holds paper and pt compensates with flexion of IP joint - pinching effect
What fracture is associated with pain along the RADIAL surface of the wrist?
Scaphoid (navicular) fracture
Scapholunate dissociation clinical manifestations (2)
- Pain on dorsal radial side of wrist
- (+) Terry Thomas sign (>3 mm)
Scapholunate dissocation treatment
Radial gutter splint; may need operative repair of scapholunate ligament
What is a Colles fracture?
Distal radial fracture with dorsal angulation (posterior)
What is tht most common complication from a Colles fracture?
Extensor pollicis longus tendon rupture
Colles fracture management (3)
- Sugar tong* splint/cast
- If stable (<20 degrees angulation –>closed reduction
- ORIF if unstable/comminuted
What is a Smith’s fracture?
“Reverse Colles fracture” ventral angulation (anterior)
“Garden Spade” deformity
What is a Barton fracture (2)?
- Intra-articular distal radius fracture with carpal displacement*
- “White arrow”
What is a perilunate dislocation?
Lunate that doesn’t articulate with capitate (but still articulates with radius)
What is a lunate dislocation?
Lunate doesn’t articulate with capitate or radius. EMERGENT CONSULT!
Lunate dislocation: diagnosis (2)
- AP view: “piece of pie” sign
- Lateral view: “spilled teacup sign” with lunate
Lunate dislocation: management
unstable needs ORIF
What is the most serious carpal fracture?
Lunate fracture since it occupies 2/3 of radial articular surface. X-rays are often negative!
What is Kienbock’s disease?
Avascular necrosis of the lunate bone
Lunate fracture management
Thumb spica
Complex Regional Pain Syndrome: Stage I
Pain out of proportion to injury. ANS sx: swelling, extremity color changes, increased nail and hair growth
Complex Regional Pain Syndrome: Stage II
Waxy, pale skin, brittle nails, loss of hair, persistently pale
Complex Regional Pain Syndrome: Stage III
Joint atrophy and contractures
What is the prophylactic treatment for complex regional pain syndrome?
Vitamin C
MOI of Mallet (baseball) finger
Avulsion of extensor tendon
Mallet (baseball) finger: Clinical manifestations
Pt unable to straighten distal finger (flexed @ DIP joint)*
What is mallet finger most commonly associated with?
Avulsion fracture of distal phalanx
Mallet (baseball) finger: Management
- Splint DIP uninterrupted extension x 6 weeks vs. surgical pinning
What is gamekeeper’s (skier’s) thumb?
Ulnar collateral ligamental injury of thumb–> instability of MCP joint
What is difference between gamekeeper’s thumb and skier’s thumb?
Gamekeeper’s thumb: Chronic
Skier’s thumb: acute condition
Gamekeeper’s (skier’s) thumb: management
- Thumb spica** and referral to hand surgeon (b/c affects pincer function)
- Complete rupture: surgical repair
Boxer’s fracture: management
Ulnar gutter splint** with joints in @ least 60 degrees flexion
What is Bennett’s fracture?
Intraarticular fracture through base of 1st MCP
What is Rolando’s fracture?
Comminuted Bennett’s fracture
What is the treatment for Bennett’s fracture/Rolando’s fracture?
UNSTABLE!!! Requires ORIF (thumb spica for stabilization)
What is the MC type of all Salter-Harris fractures?
Type II
What is Dequiervain’s tenosynovitis?
Stenosing tenosynovitis of abductor pollicus longus (APL) and extensor pollicus brevus (EPB)
What distinguishes pronator syndrome from carpal tunnel syndrome?
Pronator syndrome is associated with more proximal forearm pain than wrist/hand pain and not associated with pain at night (like seen in carpal tunnel)
Hip dislocations: complications
Avascular necrosis*, sciatic nerve injury, DVT, bleeding
What is most common type of hip dislocation?
Posterior MC
Hip dislocation clinical manifestations (2)
- Hip pain with leg shortened, internally rotated and adducted with hip/knee slightly flexed
- Anterior may be externally rotated
Hip fractures: clinical manifestations
- Hip pain with leg shortened, externally rotated**, abducted
Hip fractures: management
ORIF
What is Legg-Calve-Perthes disease?
Idiopathic avascular osteonecrosis of femoral head in children due to ischemia of capital femoral epiphysis in children
Which patient populatio is at higher risk of having Legg-Calve-Perthes disease? (3)
- Children 4-10 years old
- MC in boys
- Low incidence in African-Americans
Legg-Calve-Perthes disease: Clinical manifestations (3)
- Painless limping* x weeks (worsens with continued activity especially at the end of the day)
- Hip pain that may radiate to thigh, knee, or groin
- Restricted ROM (loss of abduction and internal rotation)
Early X-rays of Legg-Calve-Perthes disease
Increased density of femoral head, widening of cartilage space
Late X-rays of Legg-Calve-Perthes disease
Deformity, crescent sign (subchondral fracture)
When is observation indicated for Legg-Calve-Perthes disease?
In children <5 years of age or <50% femoral involvement. Usually do NSAIDs, bed rest, PT. Self-limiting with revascularization within 2 years.
When is abduction bracing indicated for Legg-Calve-Perthes disease?
Children >5 years of age or significant loss of abduction
What is Slipped Capital Femoral Epiphysis (SCFE)?
This is where the femoral head (epiphysis) slips posterior and inferior at growth plate
Which patient population is at higher risk of having SCFE?
7-16 year old patients, male children during growth spurt
SCFE: Clinical manifestations
Hip, thigh, or knee pain with limp*, external rotation of affected leg. If seen in children before puberty, suspect hormonal/systemic d/o (ex: hypothyroidism)
SCFE: Treatment (2)
- ORIF (increased risk of AVN)
- Non weight bearing with crutches
What is a greenstick fracture?
Incomplete fracture with cortical disruption and periosteal tearing on the convex side of the fracture (intact periosteum on the concave side) “bowing”**
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What is a torus (buckle) fracture?
It is an incomplete fracture with “wrinkling or bump” of the metaphyseal-diaphyseal junction (where the dense bone meets the more porous bone) due to axial loading
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Which ligament is tested by the valgus stress test?
MCL
Which ligament is tested by the varus stress test?
LCL
MCL and LCL collateral ligament injuries: Treatment for Grade I (sprains) and II (incomplete tears)
Conservative: pain control, PT to restore ROM and muscle strength, RICE, NSAIDs, knee immobilizer
MCL and LCL collateral ligament injuries: Treatment for Grade III (complete tear)
Surgical repair
What is the most commonly injured knee ligament?
ACL
In an ACL injury, what is associated with “pop and swelling”?
Hemarthrosis
What is the most sensitive specialized exam for ACL injury?
Lachman’s test
What is a segond fx?
Avulsion of the lateral tibial condyle with varus stress to the knee. If present, ligamental injuries are most likely present. Pathognomonic for ACL tear
PCL physical examination
Posterior drawer sign and posterior sag sign
PCL injury: treatment
Almost always treated operatively
What is the most common meniscal tear located at?
Medial (3x)> lateral
Meniscal tear: physical examination
(+) McMurray’s sign*, Apley test, joint line tenderness, effusion
Meniscal tear: Management
NSAIDs, partial weight bearing until ortho f/up. Arthroscopy
Patellar fracture: diagnosis
Sunrise view X-ray
Patellar fracture: Management (2)
- Non-displaced –> knee immobilizer, 6 week leg cast
- Displaced –> surgery
Which patient population has a high incidence of patellar and quadriceps tendon rupture? (2)
- Males >40 years old
- History of systemic disease (DM, gout, obesity, renal disease)
Clinical manifestations of patellar and quadriceps tendon ruptures (3)
- Sharp, proximal knee pain with ambulation, inability to extend knee (straight leg raise)
- Quadriceps tendon rupture: patella baja - palpable defect above knee
- Patellar tendon rupture: patella alta - palpable defect below knee
Patellar and quadriceps tendon rupture: management (3)
- Knee immobilizer
- No weight bearing/partial, RICE
- Surgical repair within 7-10 days
Patellar dislocation: physical exam
Apprehension sign. Only done if injury already reduced itself
Patellar dislocation: management
Closed reduction. Post reduction films. Knee immobilizer x 3-6 weeks (full extension), strengthten quads
What is the major complication of knee (tibial-femoral) dislocation?
Popliteal artery injury* (this makes it a sever limb threatening injury!!!)
Knee (tibial-femoral) dislocation management
Immediate ortho consult! Prompt reduction vial longitudinal traction
MOI for femoral condyle injury
Axial loading (falling from height)
Femoral condyle injury: Complications (2)
- Peroneal nerve injuries (check 1st web space)
- Popliteal artery injury
Femoral condyle injury: Treatment
IMMEDIATE ORHTO CONSULT! Usually heal poorly, ORIF
In a tibial plateau fracture, if it is displaced, you should check for what nerve?
Peroneal nerve function (foot drop)
What is Osgood-Schlatter disease?
Osteochondritis of patellar tendon @ tibial tuberosity from overuse
What is the most common cause of chronic knee pain in young active adolescents?
Osgood-Schlatter disease
What population is at high risk of having Osgood-Schlatter disease?
- Males
- 10-15 years old
- Athletes with “growth spurts”
Osgood-Schlatter disease: clinical manifestations
- Activity related knee pain/swelling
- Painful lump below the knee
- Tenderness to the anterior tibial tubercle
What is a baker’s cyst?
Synovial fuid effusion that is displaced into formation of a cyst
What happens if a baker’s cyst ruptures?
It causes pseudo thrombophlebitis syndrome which can mimick DVT
Baker’s cyst: Treatment
Conservative: ice, assisted weight bearing, NSAIDs. Intraarticular steroid injection, surgical excision
What is patellofemoral syndrome (chondromalacia)?
Idiopathic softening/fissuring of patellar articular cartilage. MC seen in runners*
Patellofemoral syndrome (chondromalacia): Diagnosis
+ Apprehension sign
What is the most common cause of knee pain in runners?
Iliotibial band syndrome
Iliotibial band syndrome: Clinical manifestations
LATERAL knee pain* during onset of running and then resolves. Positive lateral condyle tenderness*
Iliotibial band syndrome: Diagnosis
(+) OBER TEST*: pain or resistance to adduction of leg parallel to the table in neutral position
Which type of ankle dislocation is more common: anterior or posterior?
Posterior
What ligaments are most commonly involved with ankle sprains?
Anterior talofibular* and calcaneofibular (ATFL is the main stabilizer during inversion)
Weber A (4)
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- Fibular fracture BELOW Mortise
- Tibiofibular syndesmosis intact
- Deltoid ligament intact
- Usually stable
Weber B (4)
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- Fibular fracture AT LEVEL of Mortise
- Tibiofibular syndesmosis intact or mild tear (talofibular joint not widened)
- Deltoid ligament intact or may be torn
- Can be stable or unstable
Weber C (4)
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- Fibular fracture ABOVE Mortise
- Tibiofibular syndesmosis torn with widening of talofibular joint
- Deltoid ligament damage or medial malleolar fracture
- Unstable - requires ORIF
Anyone with a distal ankle fracture should have a proximal x-ray view to r/o what?
Maisonneuve fracture
What is Maisonneuve fracture?
Spiral proximal fibular fracture due to rupture of the distal talofibular syndesmosis and interosseous membrane as a result of a distal medial malleolar fracture and/or deltoid ligament rupture
What is a pilon (tibial plafond) fracture?
Fracture of the distal tibia from impact with talus, interrupting the ankle joint space from forceful axial load, high-impact trauma. It extends into the ankle joint.
What is the most common location for stress fractures?
3rd metatarsal
What is tarsal tunnel syndrome?
Post tibial nerve compression from overuse, restrictive footwear, edematous states
What differentiates tarsal tunnel syndrome from plantar fasciitis?
With tarsal tunnel syndrome, the pain increases throughout the day. Pain worsens @ night and with activity
What is a hammer toe?
Deformity of the PIP joint with flexion of PIP joint and hyperextension of MTP and DIP joint. Seen if the second toe is longer than the first
What is Charcot’s joint (diabetic foot)?
Joint damage and destruction as a result of peripheral neuropathy
What does the X-ray show with charcot’s joint (diabetic foot)?
Obliteration of joint space, scattered osteophytes in fibrous tissues
What is Morton’s neuroma?
Degeneration/proliferation of plantar digital nerve producing painful mass near tarsal heads
Which population is at high risk for developing Morton’s neuroma?
Women 25-50 yo esp. in those who wear tight shoes/high heels/flat feet
What is a Jones fracture?
Transverse fracture through diaphysis of 5th metatarsal
What is a pseudojones fracture?
Transverse avulsion fracture @ base (tuberosity) of 5th metatarsal. More common than true Jones fracture.
Pseudojones fracture: Management
Walking cast x 2-3 weeks; ORIF if displaced
What is the Lisfranc joint?
Bases of 1st 3 metatarsal heads and respective cuneiforms
What is a Lisfranc injury?
Disruption between the articulation of the medial cuneiform and base of 2nd metatarsal
What is the Fleck sign?
Fracture @ base of 2nd metatarsal and is pathognomonic for disruption of tarsometatarsal ligaments (Lisfranc injury?)
Lisfranc injury: management
ORIF, followed by NWB cast for 12 weeks
L4 sensory (2)
- Anterior thigh pain
- Sensory loss medial ankle
L4: weakness
Ankle dorsiflexion
L4: Reflex diminished (2)
- Loss of knee jerk
- Weak knee extension (quads)
L5: sensory (2)
- Lateral thigh/leg, hip and groin paresthesias and pain
- Dorsum of the foot: especially between the 1st and 2nd toes
L5: Weakness (2)
- Big Toe extension (big toe dorsiflexion)
- Walking on heels more difficult than on toes
L5: Reflex diminished
Usually no diminished reflexes (+/- ankle)
S1: sensory (2)
- Posterior leg /calf, gluteus
- Plantar surface of the foot
S1: Weakness
- Plantar flexion
- Walking on toes more difficult than on heels
S1: reflex diminished
Loss of ankle jerk
Scoliosis: Diagnosis
Adams forward bending test most sensitive* Cobb’s angle measured on AP/lateral films
What is spondylolysis?
Defect in pars interarticularis from either failure of fusion or stress fracture, often from repetitive hyperextension trauma
What is spondylolisthesis?
Forward slipping of vertebrae on another
What is the most common organism of osteomyelitis?
S. aureus
In sickle cell disease patients, what is the most common organism causing osteomyelitis?
Salmonella
In chronic (subacute) ostemyelitis, what is the most common organism?
S. aureus
What is the most common source of getting osteomyelitis?
Acute hematogenous spread
What is the most sensitive test in early osteomyelitis?
MRI
What is seen in early osteomyelitis?
Soft tissue swelling and periosteal reaction, lucent areas of cortical destruction
What is seen in advanced/chronic osteomyelitis?
Sequestrum*
What is the gold standard in diagnosing osteomyelitis?
Bone aspiration
Osteomyelitis abx regimen in newborn (<4 months; Group B strep, GNR)
Nafcillin or oxacillin + 3rd generation cephalosporin (cefotaxime)
Osteomyelitis abx regimen in patients >4 months (S. aureus: Methicillin sensitive [MSSA])
Nafcillin or Oxacillin or Cefazolin (Ancef) (Clindamycin or Vanco if PCN allergic)
Osteomyelitis abx regimen in patients >4 months (S. aureus: Methicillin resistant [MRSA])
Vancomycin or Linezolid
Osteomyelitis abx regimen in sickle cell patients (Salmonella, S. aureus)
3rd gen. cephalosporin (Cefotaxime) or fluoroquinolone (Ciprofloxacin or Levofloxacin)
Osteomyelitis abx regimen in patients with a puncture wound (Pseudomonas)
Ciprofloxacin (covers pseudomonas) or Levofloxacin. Ceftazidimine (3rd gen cephalosporin) or Cefipime (4th generation cephalosporin)
What is the most common organism in septic arthritis?
S. aureus (others include N. gonorrhea in sexaully active young adults and streptococci)
What is the most common area where septic arthritis is found?
Knee
Septic arthritis abx regimen: Gram positive cocci
Nafcillin (Vancomycin if suspect MRSA) (Vancomycin or Clindamycin if PCN allergic)
Septic arthritis abx regimen: Gram negative cocci, unknown or Gonococcal suspected
Ceftriaxone (Gonococcal usu. don’t need arthrotomy) (Ciprofloxacin if PCN allergic)
Septic arthritis abx regimen: Gram negative rods
Ceftriaxone (3rd gen. ceph.) + Anti-pseudomonal AG (Gentamicin)
Septic arthritis abx regimen: No organism seen
Nafcillin or Vancomycin + ceftriaxone (+/- anti-pseudomonas)
Compartment syndrome: Diagnosis
Increased intracompartmental pressure >30-45 mmHg; Increased CK/myoglobin
Compartment syndrome: Treatment
Fasciotomy
What is the most common bone malignancy?
Osteosarcoma
What patient population is at high risk of having osteosarcoma?
Adolescents (80% occur <20 years old). 2nd peak 50-60 years old
In osteosarcoma, where is mets most commonly located?
Lungs
Osteosarcoma: Diagnosis (4)
- X-ray: “hair on end” or “sun ray/burst”* appearance
- Mixed sclerotic/lytic lesions
- Periosteal bone reactions
- Codman’s triangle*
Codman’s triangle
Ossification of raised periosteum. This is seen in both osteosarcoma and Paget’s disease
Osteosarcoma: treatment
- Limb-sparing resection (if not neovascular); radical amputation (if neovascular)
- Chemotherapy as adjuvant therapy
What is Ewing’s sarcoma?
Giant cell tumor MC in children and males 5-25 years old
Ewing sarcoma: most common location
Femur and pelvis
Ewing’s sarcoma: Diagnosis
Lytic lesion with layered periosteal reaction “onion peel” appearance on x-ray
Ewing’s sarcoma: Treatment (2)
- Chemotherapy
- Surgery and radiation therapy
What is chondrosarcoma?
Cancer of cartilage MC seen in adults (40-75 years old)
Chondrosarcoma: Diagnosis
Mineralized chondroid matrix punctate or ring and arc appearance pattern of calcification
What is the most common benign bone tumor (that is seen at age 10-20 and in males)?
Osteochondroma
Osteochondroma: Diagnosis
Often penduculated, grows away from growth plate* and involves medullary tissue
Osteochondroma: Treatment (2)
- Observation
- Resection if it becomes painful, located in the pelvis (MC site of malignant transformation)
What is Paget’s disease?
Abnormal bone remodeling and disorganized osteoid formation
Which population is at high risk for having Paget’s disease? (2)
- >40 years old
- Mainly persons of Western European descent
Paget’s disease: Clinical manifestations (4)
- Asymptomatic (70-90%): usu. found because of high alkaline phosphatase
- Bone pain: MC symptom*
- Soft bones
- Skull involvement: deafness* (due to compression of CN VIII); HA
Paget’s Disease: Labs
- Elevated alkaline phosphatase with normal calcium and phosphate
- Increased urinary pyridinolines or N-telopeptide
Paget’s disease: X-rays (3)
- Lytic phase: “blade of grass/flame shaped” lucency
- Sclerotic phase: Coarsened trabeculae (Increased trabecular markings, denser/expanded bones)
- Skull: Cotton wool appearance
Paget’s disease: Treatment (2)
- Asymptomatic patients in general need no treatment
- In symptomatic patients, bisphosphanates and calcitonin. NSAIDs for pain
IV forms of bisphosphanates (2)
- Zoledronic acid
- Pamidronate
Alendronate (bisphosphanate) is associated with a high incidence of what?
Esophagitis (CI if esophageal stricture, dysphagia, or hiatal hernia)
Bisphosphanates: Side effects (4)
- Nephrotoxicity
- Thrombocytopenia
- Atypical femur fractures*
- Jaw osteonecrosis
What lab finding is found with drug-induced SLE?
+Anti-histone antibodies
SLE: Clinical manifestations (4)
- Triad of joint pain (90%), fever, and malar “butterfly rash”
- Serositis: pericarditis, pleuritis
- Discoid lupus (annular, erythematous patches on face and scalp heals with scarring)
- Systemic: CNS, cardiovascular, glomerulonephritis, retinitis, oral ulcers, alopecia*
SLE: Diagnosis (3)
- ANA (+ RF)
- Anti double-stranded DNA and Anti-Smith Ab (100% specific for SLE)
- CBC may show thrombocytopenia, hemolytic anemia, leukopenia, lymphopenia
Diagnosis of antiphospholipid Ab syndrome (APLS) (3)
- Anticardiolipin Ab (assoc. with false + VDRL/RPR)
- Lupus anticoagulant
- Beta-2 glycoprotein I Ab
Limited cutaneous systemic sclerosis (Scleroderma): Clinical manifestations
CREST Syndrome:
- Calcinosis cutis
- Raynaud’s phenomenon
- Esophageal motility disorder
- Sclerodactyl (claw hand)
- Teleangectasia
Diffuse cutaneous systemic sclerosis (Scleroderma): Clinical manifestations
Skin thickening: Trunk and proximal extremities
Scleroderma: Diagnosis (2)
- Anti-centromere Ab: Associated with limited/CREST disease - more specific. Better prognosis
- Anti-SCL-70 Ab: Asocciated with diffuse disease and multiple organ involvement. +ANA
Scleroderma: Treatment
DMARDs, steroids
Sjrogen’s syndrome: Diagnosis
ANA: esp. antiSS-A (Ro) and antiSS-B (La); +RF, Shirmer test
Sjrogen’s syndrome: Treatment (2)
- Pilocarpine
- Cevimeline
Fibromyalgia: Diagnosis (2)
- Diffuse pain in 11 out of 18 trigger points** >3 months + widespread pain
- Biopsy: “moth-eaten” appearance type I muscle fibers, injury to muscle
What is the only FDA drug that is approved to treat fibromyalgia?
Pregabalin
What is polymyositis and dermatomyositis?
Idiopathic inflammatory muscle disease of proximal limbs, neck, and pharynx
Polymyositis and dermatomyositis: Diagnosis (5)
- Increased muscle enzymes (Inc. Aldolase, CK); Elevated ESR, + muscle biopsy, abnormal EMG
- Anti-Jo 1 ab: Myositis specific antibody
- Anti-SRP Ab: Almost exclusively seen with PM
- Anti-Mi-2-ab: Specific for dermatomyositis
- Muscle biopsy
With Anti-Jo 1 ab, what is it associated with?
Interstitial lung fibrosis, “mechanic hands” (hyperkeratotic “cracked hands” with “dirty appearance”)
With a positive anti-SRP ab, what is it associated with?
More prominent muscle weakness/atrophy and cardiac manifestations
What does the muscle biopsy show with polymyositis?
Endomysial involvement
What does the muscle biopsy show with dermatomyositis?
Perifascicular/perivascular involvement
Dermatomysositis: Other findings (5)
- Heliotrope (Blue-purple) upper eyelid discoloration
- Gottron’s papules*: raised violaceous scaly eruptions on the knuckles
- Malar rash with erythema (including nasolabial folds)
- Photosensitive poikiloderma “shawl or V sign”
- Diffuse alopecia
Polymyositis and dermatomyositis: Treatment
Corticosteroids 1st line treatment (+/- methotrexate, azathioprine, IV immune globulin)
Which medications increase uric acid levels?
Diuretics (thiazides, loop), ACEI, pyrazinamide, ethambutol, ASA, ARBs (notable exception is Losartan, which actually decreases levels)
Acute management of gout (3)
- NSAIDs (ex: indomethacin, naprosyn. NO ASA!)
- Colchicine is second line treatment
- Steroids reserved if no response to NSAIDs or Colchicine or severe renal disease
What is the only medication that can be used in both the acute and chronic phases of gout?
Colchicine
Pseudogout: Treatment
Steroids are 1st line (intraarticular); NSAIDs, cochicine
Felty’s Syndrome
Rare disorder triad of: RA + Splenomegaly + decreased WBC/repeated infections
Caplan syndrome
Pneumoconiosis + RA
RA: Stiffness
- Worse after resting
- Morning stiffness @ least >30 minutes
OA: Stiffness (3)
- Worse after effort
- Evening stiffness*
- If morning stiffness present, it is usually <30 minutes
Which is the most common type of juvenile idiopathic arthritis?
Pauci-articular
Pauci-articular (Oliogarticular) JIA (3)
- Four or less joint involvement in the 1st 6 months. MC knees, ankle, small joints
- Type I associated with anterior uveitis (can lead to blindness)
- Type II associated with increased risk of ankylosing spondylitis
Systemic (acute febrile) JIA (3)
- Daily arthritis (often diurnal high fevers) with the first 6 months. Both large and small joints
- Salmon-color/pink migratory rash: often accompanies the fever. May Koebner phenomenon
- Associated with hepatosplenomegaly, lymphadenopathy, serositis, hepatitis
Polyarticular JIA (3)
- Arthritis ≥5 small joints within the first 6 months. Hip involvement is common.
- Increased risk of iridocyclitis (anterior uveitis), may have low-grade fevers
- RF negative disease associated with better prognosis than RF positive patients
Rhabdomyolysis: Diagnosis (3)
- Labs: Increased CPK (>20,000), increased LDH, ALT. Hyperkalemia and hypocalcemia
- UA: Dark urine that is positive for heme but negative for blood (myoglobinuria*)
- ECG: Look for signs of hyperkalemia
Rhabdomyolysis: Treatment (4)
- IV saline hydration
- Mannitol
- Bicarbonate to alkalinize the urine
- Calcium gluconate if hyperkalemia or ECG changes
What is Takayasu arteritis?
Chronic large-vessel vasculitis that affects the aorta, aortic arch, and pulmonary arteries
Takayasu arteritis: Diagnosis
- Angiography
- Increased ESR/CRP
Takayasu arteritis: Treatment (2)
- High dose corticosteroids 60mg/day x 6 weeks with gradual tapering
- Cytotoxic drugs (chronic active disease): ex: Methotrexate and azathioprine
Kawasaki syndorme (Mucocutaneous Lymph Node Syndrome): Clinical manifestations and diagnosis (6)
“Warm + cream” = fever* + 4 of the following 5:
- Conjunctivitis: bilateral and nonexudative
- Rash: Polymorphous
- Extremity (peripheral) changes (including arthritis)
- Adenopathy: Cervical lymphadenopathy
- Mucous membrane (lip swelling and fissures, strawberry tongue)
Kawasaki syndorme (Mucocutaneous Lymph Node Syndrome): complications
Coronary vessel arteritis: coronary artery aneurysm*, myocardial infarction, pericarditis myocarditis, peripheral arterial occlusion
Polyarteritis nodosa is associated with what conditions?
Hepatitis B and C
Polyarteritis nodosa: clinical manifestations (4)
- Renal: HTN, renal failure
- Constitutional: fevers, myalgais, arthritis (lungs usu. spared)
- CNS: neuropathy, mononeuritis complex
- Dermatologic: livedo reticularis
Is classic PAN ANCA Positive or Negative?
Negative
What is shown on renal or mesenteric angiography with polyarteritis nodosa?
Microaneurysm with abrupt cut-off of small arteries
Polyarteritis nodosa: Treatment (2)
- Steroids (+/- cyclophosphamide if refractory)
- +/- Plasmapharesis in pts with HBV
What is eosinophilic granulomatosis with polyangiitis?
Systemic small (medium) vasculitis of arteries and veins with:
- Asthma (90%)
- Hypereosinophilia
- Chronic rhinosinusitis
Eosinophilic granulomatosis with polyangiitis: Prodromal Phase
Atopic disease, allergic rhinitis, asthma
Eosinophilic granulomatosis with polyangiitis: Eosinophilic phase
Peripheral blood eosinophilia and eosinophilic infiltration of multiple organs (esp. lungs and GI tract)
Eosinophilic granulomatosis with polyangiitis: GI manifestations in eosinophilic phase
Eosinophilic gastritis: pain, bleeding, colitis
Eosinophilic granulomatosis with polyangiitis: Pulmonary manifestations in eosinophilic phase
Dyspnea, infiltrates, pulmonary hemorrhage, nodular disease, pleural effusion
Eosinophilic granulomatosis with polyangiitis: Vasculitis phase
Life-threatening systemic vasculitis
Eosinophilic granulomatosis with polyangiitis: Diagnosis
Eosinophilia hallmark*; Increased ESR, CRP, BUN/Cr; P-ANCA positive; increased IgE, RF
Eosinophilic granulomatosis with polyangiitis: Treatment
Corticosteroids (may add cyclophopshamide)
What is Granulomatosis with polyangiitis (GPA- Wegener’s)?
Small vessel vasculitis with granulomatous inflammation and necrosis of nose, lungs and kidney
Granulomatosis with polyangiitis: upper respiratory tract/nose (ENT) symptoms (2)
- Saddle-nose deformity (cartilage involvement)
- Sinusitis often refractory to treatment
Granulomatosis with polyangiitis: lower resp. tract (lung) symptoms
Parenchymal involvement (cough, dyspnea, hemoptysis, wheezing, pulmonary infiltrates, cavitation)
Granulomatosis with polyangiitis: Renal symptoms
Glomerulonephritis*, hematuria, proteinuria
Granulomatosis with polyangiitis diagnosis
+ Increased C-ANA
Granulomatosis with polyangiitis treatment
Steroids + Cyclophosphamide
What is microscopic polyangiitis?
Small (medium) vessel vasculitis (NO necrotic nor grannulmatous inflammation); Affects arterioles, venules, and capillaries
Microscopic polyangiitis: constitutional symptoms
Fevers, arthralgias, weight loss, malaise, palpable (elevated) purpura
Microscopic polyangiitis: Lung symptoms
Cough, dyspnea, hemoptysis, mononeuritis complex
Microscopic polyangiitis: Renal manifestations
Glomerulonephritis (rapidly progressing/crescentic)
Microscopic polyangiitis: Diagnosis
Elevated P-ANCA
Microsopic polyangiitis: Management
Steroids + Cyclophosphamide
What is Henoch Schonlein Purpura (HSP)? (2)
- IgA deposition in skin –> immune-mediated leukocyotclastic vasculitis
- MC systemic small-vessel vasculitis in children
Henoch Schonlein Purpura (HSP) clinical manifestations (4)
- Palpable purpura (MC on lower extremities)
- Abdominal pain
- Arthritis/arthralgias
- Hematuria
Henoch Schonlein Purpura (HSP): Diagnosis
- Kidney biopsy: mesangial IgA deposits
- Normal coags (PT/PTT) and normal platelets
Henoch Schonlein Purpura (HSP): Management
Supportive (self-limiting)
Goodpasture’s syndrome: Diagnosis
Biopsy: Linear IgG depositis in glomeruli or alveoli on immunofluoresence
Psoriatic arthritis: Diagnosis
X-ray: “Pencil in cup” deformity; +HLA-B27