26 results
Hand Nerve Injuries - Common Presentations
 • Wrist Drop - Radial Nerve Injury
 • Claw Hand
Presentations • Wrist ... Drop - Radial Nerve ... Hand - Ulnar Nerve ... InjuryHand ... Differential #Diagnosis #MSK
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Pronation - C7, C8 Wrist ... drop - Occurs after ... spared in this injury ... Carpal Tunnel Syndrome ... sensory #motor #arm #physicalexam
Left Wrist Drop - Radial Nerve Palsy on Physical Examination

Left hand drop due to compression of
Left Wrist Drop ... Examination Left hand ... Nerve #Palsy #PhysicalExam ... #clinical #video ... #orthopedics #msk
Midcarpal Instability (MCI) of the Wrist

Intrinsic Midcarpal Instability
Usually affects young, hypermobile patients.
It is due to progressive
when ulnar deviation ... extensors (ECU, ... #msk #orthopedics ... #clinical #video ... #physicalexam
Radial Nerve Anatomy and Function
The Radial nerve is the nerve of elbow, wrist and digital extension.
extension. ... When clinically ... drop: ECRB and ... ulnarly deviated ... wrist extension
Rock Paper Scissors - Assessment of Nerve Damage in Upper Limb Injuries
Rock - Median Nerve
 •
Fractures • Extension ... of wrist & MCP ... Small muscles of hand ... adduction) OK Sign ... #Injury #UpperExtremities
Synkinetic Wrist Extension Maneuver demonstrating Radial Nerve Palsy as cause for Wrist Drop

Up up, down down.
Extension Maneuver ... drop. ... both supination and ... #Palsy #Drop #clinical ... #video #physicalexam
Scapholunate Dissociation
The spacing between all carpal bones should be 1-2 mm, look for the "Terry Thomas"
"Terry Thomas" sign ... • Due to injury ... onto outstretched hand ... extension • Possible ... Orthopedics #Sports #MSK
Anterior Interosseous Peripheral Nerve Injury 

Manifested as the inability to make the OK sign.

by Dr. Boby
to make the OK sign ... #clinical #video ... #neurology #physicalexam ... #msk #sports #neurology ... #orthopedics #Hand
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
onto outstretched hand ... extension • ... fracture, median nerve ... injury • ED ... Orthopedics #Sports #MSK