257 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
musculocutaneous) • Extension ... Pronation - C7, C8 Wrist ... C7 (median) • Extension ... C8 (median) • Extension ... Horner Syndrome Wrist
Common Hand Fractures on X-Ray
Mallet finger - injury to the lateral extensor slips
Boutonniere deformity - injury
Common Hand Fractures ... to the lateral extensor ... of extensor tendon ... drdevradiology #Hand ... XRay #Radiology #Wrist
Epicondylitis - Lateral: Focal epicondyle tenderness, decreased grip strength, pain with resisted wrist extension. Medial: Focal
with resisted wrist ... extension. ... with resisted wrist ... flexion and forearm
Causes of Nausea and Vomiting - Differential Algorithm #Diagnosis #EM #IM #Causes #Nausea #Vomiting #Differential #NonGI
Causes of Nausea ... and Vomiting - ... Differential Algorithm ... Diagnosis #EM #IM #Causes ... Differential #NonGI #Algorithm
Radial Nerve Anatomy and Function
The Radial nerve is the nerve of elbow, wrist and digital extension.
nerve of elbow, wrist ... and digital extension ... the wrist and elbow ... not involve a wrist ... extension) but
Midcarpal Instability (MCI) of the Wrist

Intrinsic Midcarpal Instability
Usually affects young, hypermobile patients.
It is due to progressive
Instability (MCI) of the Wrist ... slightly extended, and ... deviation of the wrist ... extensors (ECU, ... #Instability #Wrist
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
Dislocation On lateral wrist ... onto outstretched hand ... , pain with wrist ... extension • ... #Dislocation #Wrist
Mallet Finger
Absence of a fracture does NOT exclude Mallet finger, the extension function of the DIP
Mallet finger, the extension ... Finger deformity caused ... of the terminal extensor ... Exam: Swollen and ... Diagnosis #Management #Hand
Triquetral Fracture
The triquetrum is the second most commonly fractured carpal bone. Look for the "pooping duck
onto outstretched hand ... dorsum of the hand ... ulna, pain with wrist ... flexion and extension ... Triquetrum #Fracture #Wrist
Rock Paper Scissors - Assessment of Nerve Damage in Upper Limb Injuries
Rock - Median Nerve
 •
Fractures • Extension ... of wrist & MCP ... Small muscles of hand