MSK Flashcards
Serratus anterior is inervated by which nerve ?
long thoracic nerve
Which nerve inervates the deltoid muscle?
The axillary nerve
Which nerve inervates the biceps brachii muscle?
musculocutaneous nerve C5-C7
What nerve inervates the sternocleidomastoid and trapezius muscles?
spinal accessory nerve
Which nerve is damaged leading to carpal tunnel syndrome?
Median nerve
Diabetic foot infection, which bacteria?
Staphylococcus aureus
what is a common pathogen seen in chronic osteomyelitis, rather than acute osteomyelitis.
Pseudomonas aeruginosa,
Acute-Staph Aureus
Surgical Neck fracture of Humerus, Which nerve damaged?
Axillary Nerve C5-C6
Axilla/Midshaft fracture of humerus, which nerve?
Radial Nerve C5-C8
Supracondylar fracture, which nerve damaged?
Median Nerve (C8-T1)
Medial Epicondyle fracture,hamate bone damaged (Fall) - which nerve is damaged.
Ulnar Nerve
What happens when the Axillary nerve is damaged C5-C6?
You cannot ABduct arm
Which damaged nerve results in Wrist Drop?
Radial Nerve C5-C8
Median nerve damage, what happens to hand?
Monkey Hand (Ape hand) C5-T1
Ulnar nerve damage, what happens to hand?
Ulnar Claw
What are the spine segments?
C1- Atlas
C2- Axis
C3-C7
T1-T12
L1-L5
S1-S5
Which nerve damaged when Ribs damaged? What does it cause?(2)
long thoracic nerve/ causes ‘winging’ of the scapula
injury to the brachial plexus, which nerve damaged as you cannot bicep curl- and what also can you not flex
musculocutaneous nerve
Also, cannot flex elbow
Damage to C3-C5 roots would cause pain where?
Damage to C3-C5 roots would cause pain from the neck to the upper chest.
Damage to T11-L4 roots would cause pain where?
lower abdominal and leg pain.
Damage to L1-L4 roots would cause pain where?
Damage to L1-L4 roots would cause leg pain.
Damage to S1-S5 roots would cause pain where?
posterior leg and buttock pain.
Can’t climb stairs, which nerve damaged?
can’t climb stairs - Inferior gluteal nerve
Difficulty aBducting the hip, which nerve damaged?
superior gluteal nerve
Femoral Nerve injury,how does it happen? What is the consequence?
pelvic/hip fracture.
issues with knee extension and hip flexion
What is damaged during meralgia paresthetica?
lateral cutaneous nerve of the thigh is damaged
obturator nerve damaged, what happens?
difficulty ADducting the thigh
Falling onto an outstretched hand (FOOSH) is the most common mechanism causing a what type of carpal fracture
scaphoid fracture
Tell me about Colles’ fracture(4)
is a fracture of the distal radius (1)
usually caused by a FOOSH (2)
but would not cause pain in the anatomical snuffbox. (3)
DINNER FORK DEFORMITY (4)
Galeazzi fracture, tell me about it (2)
fracture of the radial bone
with dislocation of the distal radioulnar joint
Z in alphabet is distal
Smith’s fracture
fracture of the distal radius,
dorsal aspect of their wrist with their hand bent inwards, i.e. on a flexed wrist rather than an extended wrist as seen in scaphoid and Colles’ fractures.
Which nerve innervates the Teres minor?
Axillary nerve
Which nerve innervates the Teres Major?
Lower subscapular nerve
Which nerve innervates the deltoid?
Axillary nerve
Which nerve innervates the Trapezius?
Accessory nerve
Which muscle is responsible for flexing the DIP joint
Flexor digitorum profundus
Flexor digitorum longus is a muscle in the lower limb responsible for ?
Flexor digitorum longus is a muscle in the lower limb responsible for plantar flexion of the 2nd-5th toes.
The muscle Flexor digitorum superficialis flexes what in the hand?
the MCP and PIP joint of the fingers. It does not flex the DIP joints.
Flexor hallucis longus is a muscle in the lower limb which flexes the ?
great toe. It does not flex the distal interphalangeal joints.
Sciatic nerve injury? What happens?
1)pain, numbness and tingle over the lower back, buttocks and posterior leg,
2) knee flexion and hip ADduction weakness.
3) herniation of a lumbar disc.
Superior gluteal nerve injury , what are signs? (2)
weakness hip ABduction
positive Trendelenburg sign.
Bennett fracture, what is affected?
metacarpal bone (base of the thumb), often extending into the joint,
What is the term used to describe a visible angular deformity in the thoracic region?
gibbus deformity
L3 issue, what is effected?
knee extension
L5 issue, what is effected?
weakness of big toe extension
S1 issue, what is effected?(2)
issue with gastrocnemius and soleus muscles
weakness in plantar flexion
S2 issue, what is effected?
posterior thigh muscles
SItS - break the 4 parts down for me.
Supraspinatus- aBDucts arm (0- 15 degrees) before deltoid takes over
Infraspinatus- laterally/external arm rotation
teres minor- laterally/external arm rotation
Subscapularis- rotates arm medially
Osteoblasts- job?
These are the builders
Osteoclasts-job?
demolition experts
epidermis is made up of 5 distinct layers consisting of different cell types and functions (outer- to innermost)
Stratum corneum
Stratum lucidum*
Stratum granulosum
Stratum spinosum
Stratum basale
Come
Let’s
Get
Sun
Burnt
unhappy triad
AMM
ACL tear
MCL sprain
Medial meniscus tear
issue with L4- what is effected (A,P,2)
weakness of ankle dorsiflexion and a reduced patella reflex
Joint aspiration in gout shows …
Needle-shaped Negatively birefringent monosodium urate crystals under polarised light
in Rheum context: gram-negative cocci shows (neisseria gonorrhoeae)
And gram-negative bacterium shows (chlamydia)
Which 2 disease profiles indicated?
septic arthritis (gonorrhoeae)
reactive arthritis (chlamydia) (knee)
Multiple gram-positive cocci shows …
septic arthritis
pseudogout (synovial fluid) - under polarised light
Rhomboid-shaped crystals positively birefringent under polarised light shows…
Older man, hip pain, worse with activity and late in day. Diagnosis and 4 x-ray findings?
Osteoarthritis
LOSS
Loss of joint space
Osteophytes
Subchondral Sclerosis
Subchondral Cysts
Osteoarthritis lumps on fingers and affected joints? (2)
1) Heberden’s Nodes (DIP)
2) Bouchard’s Nodes (PIP)
Medical treatment for Osteoarthritis
1) Analgesia
2) Steroid injections
3) Joint replacement
Woman, 40-70 years old
Symmetrical joint pain (hands wrists, feet)
Worst in the morning
Diagnosis and antibodies (2)?
Rheumatoid Arthritis
1) Rheumatoid factor
2) CCP antibodies
4 types of hand deformities for Rheumatoid Arthritis
1) Z-Shaped thumb
2) Swan Neck
3) Boutonnieres
4) Ulnar deviation at the mcp joints
Invest. for tenosynovitis
USS
Scoring system for rheumatoid arthritis
DAS28
First line treatments rheumatoid arthritis
DMARD’s
1) Methotrexate
2) Leflunomide
3) Sulfasalazine
3rd line Initial type of biologic DMARD for rheumatoid arthritis
TNF inhibitor infliximab
Asymmetrical pain / stiffness fingers and feet.
skin and nail changes.
Diagnosis?
PsA
Onycholysis
Screening tool for PsA
PEST
Most severe form of PsA and telescoping of the digits (pencil in a cup)
Arthritis Mutilans
Knee swelling after having GI issue- diagnosis?
Reactive Arthritis
Triad of features of Reactive Arthritis
ACU
Arthritis
conjunctivitis
Urethritis
Can’t see, cannot pee, cannot climb a tree.
2 Main triggers of Reactive Arthritis
1) Gastroenteritis
2) Chlamydia
Gene responsible for Reactive Arthritis
HLA B27
Differential diagnosis for Reactive Arthritis
How to exclude other causes?
Septic Arthritis
Joint aspiration
Patient < 30 Y.O
Bad back- diagnosis and which gene?
Ankylosing spondylitis
HLA B27
Ankylosing spondylitis
worse in morning or evening?
Morning
Ankylosing spondylitis
worse with movement or rest?
Rest
Clinical exam for Ankylosing spondylitis
Schober’s test
Xr finding in late Ankylosing spondylitis
bamboo spine
MRI finding in early Ankylosing spondylitis
Bone Marrow Oedema
(sacroiliac joints)
Features of SLE (7)
Hair Loss
Malar Rash
SOB
Splenomegaly
Joint Pain
Lympthadenopathy
Myalgia
What worsens SLE Rash?
Sunlight
Initial antibody test for SLE
ANA
Specific antibody test for SLE (2)
Anti- dsDNA
Anti-Smith
1st line SLE treatment
Hydroxychloroquine
Biologic for SLE , what do they target?
Rituximab
B-Cells
Female, 15-40
face disk shaped skin lesions, worse with sunlight
Diagnosis and initial investigation?
DLE
Skin biopsy
treatment for DLE (4 STSH)
1) Sun protection
2) Topical steroids
3) Steroid injections
4) hydroxychrooquine
Which cancer DLE?
SCC
blue fingers, disease?
Raynaud’s Phenomenon
3 stages of Raynaud’s Phenomenon
white -> red-> blue
Associated connective tissue disease for Raynaud’s Phenomenon
Systematic Sclerosis
Blood test for connective tissue disease?
ANA
Test to examine small vessels in fingers (raynaud’s phenomenon)
Nailfold Capillaroscopy
medical management of raynaud’s phenomenon
Prophylactic nifedipine
What does CREST stand for in CREST syndrome
Calcinosis
R.P
Oesophageal dysmotility
Sclerodactyly
Telangiectasia
Which anitbodies are checked in CREST?
ANA
Antibodies in LCSS (limited cutaneous systemic sclerosis)
Anti-centromere antibodies
Antibodies in DCSS (diffuse cutaneous systemic sclerosis)
Anti-SCL-70 Antibodies
70 is large number
White woman above 50, shoulder pelvic girdle pain - worse in morning.
Diagnosis?
Polymyalgia Rheumatica
Abnormal blood test findings for Polymyalgia Rheumatica
↑ CRP
↑ ESR
↑ Plasma viscosity
Creatine kinase normal
treatment for Polymyalgia Rheumatica
pred 15mg
additional meds needed for Polymyalgia Rheumatica (3)
- Bisphosphonates
- Calcium+ Vit D
- PPI
Old man- right side headache and jaw ache when chewing
What diagnosis and associated condition
Giant Cell Arteritis
Polymyalgia Rheumatica
Key complication of Giant Cell Arteritis?
Vision Loss
Key blood test for Giant Cell Arteritis
ESR (>50 mm/hr)
Proper test for Giant Cell Arteritis
Temporal Artery Biopsy
Initial treatment Giant Cell Arteritis
High Dose Pred (40-60)
older woman pain/ weakness thighs, shoulders and upper arms
purple rash on eyelids
Diagnosis?
Dermatomyositis
Similar diagnosis to Dermatomysitis without skin changes-
Polymyositis
Skin lesions on hands on joints from Dermatomyositis
Gottron lesions
Initial blood test for Dermatomyositis
Creatine Kinase
Antibodies in Polymyositis & Dermatomyositis (3)
1) Anti-JO-1 Antibodies (Polymyositis)
2) Anti-M1-2 Antibodies (Dermatomyositis)
3) ANA
Definitive investigation for Dermatomyositis
muscle biopsy
Dermatomyositis big risk?
Cancer
1st line treatment Dermatomyositis
Corticosteroids
40-60 year old women
Dry eyes
Vaginal dryness / poor sex
Which disease and which glands affected
Sjögren’s syndrome
Exocrine Glands
Sjögren’s syndrome may be 2° to?
SLE and RA
Sjögren’s syndrome antibodies (2)
- Anti-RO
- Anti-LA
Roses are lavely
Test for dry eyes
Schirmer test
Treatment to halt Sjögren’s syndrome
hydroxychloroquine
Mnemonic for structures posterior to the medial malleolus?
Tom Dick And Nervous Harry
T-Tibialis posterior tendon
D- flexor Digitorum longus
A Posterior Tibial Artery
N Posterier neve
H Flexor Hallucis Longus tendon
Abductor hallucis function and nerve
Medial plantar nerve
Abducts the great toe
Flexor digitorum brevis function and nerve
Flexes all the joints 4 toes except for the interphalangeal joint.
Medial plantar nerve
Abductor digit minimi (foot) function and nerve
little toe abduction
Lateral plantar nerve
Flexor hallucis brevis function and nerve
flexion of the great toe at the metatarsophalangeal joint
Medial plantar nerve