MSK - Fast Facts

positive straight leg test indicates

most common cause of radiculopathy and sciatica

nerve injury responsible for foot drop

nerve injury responsible for wrist drop or "saturday night palsy"

MC injured ligament in lateral ankle sprain

midfoot pain should be xrayed if the patient cannot bear weight and their is tenderness at these bones

ankle pain should be xrayed if the patient cannot bear weight and their is tenderness at the posterior edge of the distal 6cm or tip of these two regions of the malleolus

radial fracture characterized by volar displacement of the distal radius

joints most likely to dislocate posteriorly rather than anteriorly

MC herniated disk

nerve most likely to be injured in shoulder fracture

colles fracture presents w/ this deformity on xray

fracture presenting w/ "garden spade" deformity on xray

MC upper extremity fracture

MCC of cauda equina syndrome

MC carpal bone fracture

snuffbox tenderness indicates fracture of the

bacterial cause of septic systemic infection more common in sickle cell patients

nerve commonly injured in tibiofemoral (anterior knee) joint dislocation

decreased sensation to the dorsum of the foot and weak dorsiflexion of the ankle are signs of injury to this nerve

MC injured muscle in rotator cuff injury

MC neurovascular injury in midshaft humerus fracture

compartment most commonly affected by compartment syndrome

normal delta pressure

consider fasciotomy when delta pressure ≤

MC long bone fracture

MC direction of shoulder dislocation

MC direction of hip dislocation

MCC of compartment syndrome

MCC of lateral hip pain in adults

MCC chest pain in children

MCC of heel pain in US

MCC of lateral ankle sprain

saddle anesthesia is a red flag for

MC injured knee ligament

Positive obriens test indicates

MC injured artery in patellar dislocation

MC injured nerve in patellar dislocation

deformity caused by rupture of the extensor tendon insertion at the DIP, resulting in permanent flexion at the DIP

bony hard swellings at the DIP joints, pathognomic for osteoarthritis

fracture most likely to be sustained by falling on an outstretched hand

crystal shape in pseudogout

Carpal tunnel is definitively diagnosed via

Hematogenous osteomyelitis is often monomicrobial and seen in this demographic

Ecchymosis of the plantar aspect of the foot is nearly pathognomic for this type of injury

MCC of osteomyelitis in kids

pain on passive extension of the affected finger, finger held in partial flexion, tenderness of the full tendon sheath, and fusiform swelling of the digit are signs of

increased risk of gout flares when serum urate ≥

incomplete ankle sprain is also known as grade

A flesh colored, smooth, firm, well circumscribed painless mass over a tendon is also known as a

temporal arteritis often coocurrs with this rheumatological condition

drug induced lupus may be remembered with the mnemonic

leukocytosis, an elevated erythrocyte sedimentation rate or C-reactive protein, elevated creatine kinase, and elevated lactate dehydrogenase, aldolase, aspartate aminotransferase, and alanine aminotransferase is consistent with

gottron papules are pathognomic for

chondrocalcinosis on xray indicates

rat bite erosions on xray indicate

anti-histidyl-transfer RNA synthetase antibodies is also known as this type of antibody, seen predominantly in polymyositis

polyarteritis nodosa is associated with this viral infection

mononuclear cell infiltration seen on salivary gland biopsy is a hallmark of

patients w/ sjogrens syndrome have an increased risk of this cancer

juxta-articular demineralization and soft tissue swelling of the joints seen on xray indicates

tear of the MCP ulnar collateral ligament causes this msk deformity

defect in the autosomal dominant collagen type 1 gene is responsible for

this artery is most likely to be involved in avascular necrosis of the femoral head following fracture

vaginismus pain is caused by contraction of this muscle

dysfunction of this muscle is most likely to cause foot drop

inflammation between the abductor policis longus and extensor pollicis brevis characterizes this condition

proximal ulna fracture w/ dislocated radial head is known as

distal radius fracture w/ dorsal displacement is known as

distal radius fracture w/ dislocation of the distal radioulnar joint is known as

blue sclera is associated w/

positive metatarsal squeeze test is associated w/

positive thompson squeeze test indicates

positive lachman and A/P drawer tests indicate

crescent sign on xray of hip joint indicates

ice cream cone sign on xray indicates

Abduction and external rotation of a displaced joint indicates this direction of dislocation

MC joint disorder

bouchards and heberdens nodes are pathognomic for

rheumatoid arthritis is more likely to affect (unilateral, bilateral) joints

Osteophytes, subchondral stenosis, and joint space narrowing is associated with

MC fracture caused by osteoporosis

serum acid above this value is associated w/ increased risk of gout flare

shape of sodium urate crystals in gout

shape of crystals in pseudogout

classic xray finding in gout

carpal tunnel is caused by compression of this nerve

positive tinel and phalens sign indicate

fracture of the proximal ulnar shaft w/ radial head displacement is known as

fracture of the distal radius w/ distal radioulnar displacement

Knee pain w/ valgus stress test indicates

Knee pain w/ varus stress test indicates

catching/poppingof the knee and joint line tenderness suggests injury of this part of the knee