16 results
OK Sign - Interosseous Nerve Injury

Patients with compromise of anterior interosseous nerve will not be able
Nerve Injury ... Normal and abnormal ... OK signs are seen ... #OK #Sign #Abnormal ... #sports #msk #orthopedics
Scapholunate Dissociation
The spacing between all carpal bones should be 1-2 mm, look for the "Terry Thomas"
• Due to injury ... onto outstretched hand ... #Radiology #XRay ... #Orthopedics #Sports ... #MSK
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
onto outstretched hand ... fracture, median nerve ... injury • ED ... #Carpal #Radiology ... #MSK
Triquetral Fracture
The triquetrum is the second most commonly fractured carpal bone. Look for the "pooping duck
"pooping duck sign ... Complications are ... #Carpal #Radiology ... #Orthopedics #Sports ... #MSK
Tinel's Test of the Ulnar Nerve

Perform a Tinel's at the cubital tunnel by percussing the ulnar
at the cubital tunnel ... pain, numbness, and ... #Tinels #Test #Sign ... elbow #PhysicalExam ... #sports #msk #orthopedics
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
- C6, C7, C8 Elbow ... aracteristic "claw hand ... spared in this injury ... Carpal Tunnel Syndrome ... sensory #motor #arm
Distal Radius Fracture 
Distal radius fracture is the most common orthopedic injury. Here's a quick summary.
•
onto outstretched hand ... variable gross wrist ... injury, acute carpal ... tunnel syndrome ... #Orthopedics #MSK
Posterior Elbow Dislocation
The elbow is the second most commonly dislocated major joint in adults and the
anterior interosseous nerve ... can't make A-OK sign ... Posterior long arm ... #Orthopedics #Sports ... #MSK
Supracondylar Elbow Fracture
• Most common elbow fracture in children, peak age 5-7 
• When looking at
onto outstretched hand ... brachial artery injury ... Posterior long arm ... #Humerus #Radiology ... #Orthopedics #MSK
Radial Head Elbow Fracture with displaced Fat Pads
Intra-Articular Fracture of the Elbow with displaced fat pads
intra-articular injury ... is always abnormal ... called the “Sail sign ... trauma #clinical #radiology ... #msk #hemarthrosis