MSK Flashcards
What are the functions of the skeletal system
Support
Protection
Movement
Mineral homeostasis
Blood cell production
Triglyceride storage
Where does blood cell production occur within
Red bone marrow
Where does triglyceride storage take place within
Yellow bone marrow
What bones are longer than wide such as thighs, legs, arms, fingers, toes
Long bones
What bones are almost cube shaped such as most wrist and ankle bones
Short bones
What bones are thin and extensive surface such as cranial bones, sternum, ribs and scapulae
Flat bones
What bones do not fit in the above categories such as vertebrae, and facial bones
Irregular bones
What are the parts of a long bone
Diaphysis - the shaft
Epiphyses - ends of the long bone
Metaphyses - contains the “growth plate” and is located BETWEEN the shaft and and end of bone
What cells make up the microscopic structure of the bone
Osteoblasts - bone building cells
Osteocytes - maintain bone, exchange nutrients and waste within the blood
Osteoclasts - digest bone matrix for normal bone turnover
What type of joint has no cavity, just dense irregular connective tissue
Fibrous joints
What type of joints have no cavity and the bones are held together by cartilage
Cartilaginous joints
What type of joints have synovial cavities and many other components such as ligaments
Synovial joints
What is located in the skull between bones of the skull and add strength to the joints
Sutures: example of fibrous joints
What is a dense irregular tissue between long bones such as the radius-ulna, and tibia-fibula
Interosseous membrane: examples of fibrous joints
What allows articulating bones fit more tightly
Articulate discs (menisci)
What are sacs that contain synovial fluid and are located where friction can occur (decreases friction)
Bursae
What are the functions of ligaments
Composed of connective tissue
Found throughout the skeletal system
Function to connect bone to bone
Ligaments are commonly injured by spraining or tearing of ligaments
What is the function of tendons
Tough band of fibrous connective tissue
Functions to connect muscle to bone: skeletal muscle contracts and moves bones via tendons, very dense and more capable of withstanding tension
What are the different types of muscular tissue in the body
Skeletal muscle
Cardiac muscle
Smooth muscle
What are the functions of the different types of muscles together
Produce body movement
Stabilize body positions
Store and move substances
Produce heat
What is the decrease in the angle between articulating bones
Flexion
What is the increase in angle between articulating bones
Extension
What is the bending beyond 180 degrees, such as moving humerus backwards behind the anatomical plane
Hyperexenstion
What is the movement of the bone away from the midline
Abduction
What is the movement of bone toward the midline (add to the body/move closer)
Adduction
What is the movement of distal end in a circle
Circumduction
What is when the bone revolves around it’s an longitudinal axis
Rotation
What is the movement of the soles of the foot medially
Inversion
What is the movement of the soles laterally
Eversion
What is bending the foot toward the dorsum (standing on heels)
Dorsiflexion
What is bending the foot toward the plantar surface (standing on toes)
Plantarflexion
What is important family history information to gather in the HPI
Congenital abnormalities
Scoliosis or back problems
Joint disorders: arthritis and/or gout
Genetic disorders: skeletal dysplasia
What is important exam equipment to have for an MSK patient
Tape measure
When assessing range of motion, passive range of motion should meet what standards
Passive range of motion typically exceeds active range of motion by 5 degrees, and should be the same as the contralateral side
What does zero represent on the grade strength scale
No evidence of muscle function (including muscle twitch, 0/5)
What does trace represent on the grade strength muscle scale
Muscle contraction but no or very limited joint motion (1/5)
What does poor represent on the grade strength scale
Complete range of motion with gravity eliminated (2/5)
What is fair on the grade strength scale
Complete range of motion against gravity (3/5)
What does good represent on the grade strength scale
Complete range of motion against with some resistance (4/5)
What does normal represent on the grade strength scale
Complete range of motion with full or normal resistance (5/5)
What are the regions of the vertebral column
Cervical - 7 vertebrae
Thoracic - 12 vertebrae
Lumbar - 5 vertebrae
Coccyx - 4 fused vertebrae
What is lordotic
Cervical and lumbar vertebrae
What is kyphotic
Thoracic and sacral curves
Which vertebrae is larger than cervical vertebrae
Thoracic vertebrae
Which vertebrae are the largest and strongest
Lumbar vertebrae
What provides foundation for the pelvic girdle
The sacrum
What does the manubrium, body and symphonies process make up
The sternum
What are true ribs
R1-R7
Costal cartilage articulates directly with the sternum
Which ribs are false ribs
R8-R10
Articulate with the sternum bi cartilage of rib 7
Which ribs are floating ribs
R11-R12
Do NOT articulate with the sternum at all
What articulates with the sternum medially and the acromion laterally
The clavicle
What bones make up the pectoral girdle
Clavicle
Scapula
Acromion
Coracoid
What is the part of scapula that forms the “tip of the shoulder”
The acromion
What are the ligaments of the pectoral girdle
Acromioclavicular ligament
Coracoclavicular ligament
Coracoacromial ligament
What is shallow, allowing only about 25% of numeral head to make contact
The glenoid cavity
What articulates with the head of the numerous to form the shoulder joint
The glenoid cavity
What forms a ring around the glenoid cavity
The glenoid labrum
What deepens the glenoid and provides more stability to the joint
The glenoid labrum
What are the muscles of the rotator cuff
Supraspinatus
Infraspinatus
Teres minor
Subscapularis
What assists deltoid in abduction of the humerus at the shoulder
Supraspinatus
What provides external rotation of the humerus at the shoulder joint
Infraspinatus
What extends arm at shoulder and rotation of the arm externally
Teres minor
What provides internal rotation of the arm at the shoulder
Subscapularis
What abducts, flexes, and rotates arm at shoulder joint
Deltoid
Multiple fibers in this large muscle move the scapula multi-directionally
Trapezius
Elevates scapula and rotates downward
Levator scapula
Elevates and adducts scapula and rotates downward as well as stabilizes the scapula
Rhomboid major
Adducts and rotates arm medially at the shoulder and flexes arm at the shoulder joint
Pectoralis major
Extends, adducts, and rotates arm medially at the shoulder joint, draws arm downward and backward
Latissimus dorsi
Extends arm at the shoulder joint, assists with adduction and rotation of arm medially
Teres major
Flexes and adducts arm at shoulder
Coracobrachialis
What are their bones of the elbow
Humerus
Radius
Ulna
What is the olecranon
The medical term for elbow
What additional movement occurs in the elbow other than flexion and extension
Supination - moving the palm up
Pronation - moving the palm down in the opposite direction
*pronation and supination occur ONLY at the elbow
What flexes arm at the shoulder, flexes and supinates forearm at the elbow
Bicep brachii
What flexes forearm at the elbow joint
Brachialis
Brachioradialis
What extends forearm at the elbow joint and extends arm at shoulder
Tricep brachii
What supinates forearm
Supinator
What pronates the forearm
Pronator teres
What are the bones of the hand
Carpals
Metacarpals
Phalanges
What flexes and abducts hand at the wrist
Flexor carpi radialis
What flexes and adducts hand at the wrist
Flexor carpi ulnaris
What weakly flexes hand at the wrist joint
Palmaris
What flexes hand at wrist and flexes phalanges of each finger at the PIP joint
Flexor digitorum superficialis
What flexes hand at wrist and flexes phalanges at the DIP joint
Flexor digitorum profundus
What extends and abducts hand at the wrist joint
Extensor carpi radialis longus
Extends and adducts hand at the wrist joint
Extensor carpi ulnaris
What extends hand at wrist joint, extends phalanges of each finger
Extensor digitorum
Which nerve is responsible for motor supply to most of the intrinsic hand muscles and provides sensation to little finger and 1/2 of ring finger
Ulnar nerve
Which nerve provides sensation to the palmar and dorsal aspect of first 3 and a half fingers
Median nerve
Which nerve provides sensation to dorsum of the hand and lateral first three fingers and half of the 4th finger
Radial nerve
What special test is used to diagnose shoulder impingement or rotator cuff tears
Neer’s impingement sign
What test reinforces a positive Ne’er sign for impingement
Hawkin’s Impingement Sign
How does a positive empty can test present
Pain focal to the middle aspect subacromial space
What special test detects tears in the rotator cuff
Drop arm test
What special test evaluates the teres minor and weakness indicates a positive sign
Hornblower’s test
What test is helpful in diagnosing bicep tendonitis
Speed’s test
What special test evaluates the Subscapularis strength and possible tendon rupture
Gerber /lift-off test
What does a positive Jobe Relocation test/Relocation test of Jobe indicate
Test is positive if relief of pain and apprehension occurs/ suggest anterior glenohumeral instability
What is a a positive sulcus sign
A positive sulcus suggest that the patient has inferior shoulder instability
What does a positive Obrien’s test present as and suggest
Pain is worse with thumbs down, relieved with forearm supinated
Suggest labra pathology
What is the vagus stress test assessing
The stability of the medial ligamentous structures
What is the varus stress test assessing
The stability of the lateral collateral ligament in the lateral capsule
If pain is present during the long finger test, what does that indicate
Pain to the lateral epicondyle is positive for lateral epicondyle
Inability to flex the DIP may indicate what
Injury to the profundus or median ulnar nerve injury
A positive tinel sign suggests what
Carpal tunnel syndrome
Pain in the dorsalradial aspect of the wrist indicates a stenosis tenosynovitis of the abductor pollicis longus and extensor brevis can be detected by what special test
Finkelstein
What can the Phalen maneuver suggest
Carpal tunnel syndrome
What can Froments sign suggest
Ulnar nerve paralysis
What special test can observe inability to actively extend the distal interphalangeal joint, suggesting extensor tendon avulsion
Mallet Finger Test
What is a type I AC injury described as
No superior separation of clavicle from acromion
What is a type II AC injury described as
Partial separation of the clavicle from acromion
What is type III AC injury described as
Complete separation of the clavicle from the acromion
What is a type IV AC injury described as
Completely disrupted with superior and prominently posterior displacement
What is a type V AC injury described as
Completely disrupted with CC interspace more than twice as large as opposite shoulder
What is a type VI AC injury described as
UNCOMMON
Clavicle lies in either the subacromial space or subcoracoid space
What is the treatment for an AC injury
Type I and II:
Sling x24-48 hours, ice, analgesics, HEP that focuses on ROM , RTFD as pain permits (usually within 4 weeks)
Type III:
Ortho consult, sling x 24-48 hours, ice, analgesics, HEP that focuses on ROM, LLD until evaluated
Type IV - VI:
Ortho consult, MEDEVAC
What is the most common bony injury
Fracture of the clavicle
What special test can be performed to detect a fracture of the clavicle
Cross-body test with possible grinding is a positive test
What is the treatment of a clavicle fracture
Ice
Analgesics
Ortho consult
Mid-shaft fracture with minimal displacement and no neuron vascular injury: figure-of-8 strap for 6-8 weeks
All fractures require referral - MEDEVAC/ painful nonunion after 4 months of treatment
What are the sx for impingement syndrome of the shoulder
Gradual onset of anterior and lateral shoulder pain exacerbated by overhead activity
Night pain and difficulty sleeping on affected side
What is the treatment for impingement syndrome of the shoulder
NSAIDS
Ice
LLD and HEP for shoulder stretching and strengthening
PT consult if failed local management
*Ortho consult if failed conservative management after 2-3 months or other pathology is suspected
What are the synonyms of rotator cuff tear
Musculotendinous cuff rupture
Rotator cuff rupture
Rotator cuff tendinitis
What are the sx of rotator cuff tear
Chronic shoulder pain
Specific injury that triggered pain
Night pain and difficulty sleeping on the affected side
Complaints of weakness, catching and grating especially with overhead activities
What is the tx for rotator cuff tear
NSAIDs
Ice
LLD and HEP
PT consult if failed local management
Ortho consult if failed rehab over 3-6 months
What is the clinical presentation of someone with a bicep tendon injury
Anterior shoulder pain that radiates distally down the arm over bicep muscle and aggravated by lifting, pulling, or overhead activities
What is the tx for bicep tendon injury
NSAIDS, ice, duty/activity modification, PT/HEP
*if rupture is suspected then ortho consult
What some synonyms for shoulder instability
Dislocation
Multidirection instability
Recurrent dislocation
Subluxation
Define instability of the shoulder
Anterior, posterior, inferior or multidirectional glenohumeral laxity due to traumatic or atraumatic pathology
Define subluxation of the shoulder
Humeral head partially slips out of socket with spontaneous reduction
Define dislocation of the shoulder
Humeral completely slips out of glenoid fossa with spontaneous reduction or sometimes requiring manual manipulation
What are the specific instability patterns of the shoulder
TUBS: traumatic unilateral dislocations with a Bankart lesion that can be successfully treated with surgery
AMBRI: atraumatic multidirectional instability that is commonly bilateral and is often treated with rehab and occasionally an inferior capsular shift (surgery)