107 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Pronation - C7, C8 Wrist ... , C8 (radial) Finger ... aracteristic "claw hand ... Horner Syndrome Wrist ... sensory #motor #arm #physicalexam
Distal Radius Fracture 
Distal radius fracture is the most common orthopedic injury. Here's a quick summary.
•
• Colles (90% "dinner ... onto outstretched hand ... variable gross wrist ... , scapholunate and ... reduction using finger
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
Dislocation On lateral wrist ... no longer sitting ... , pain with wrist ... Disposition: Pending orthopedic ... Diagnosis #Management #Orthopedics
Hand Nerve Injuries - Common Presentations
 • Wrist Drop - Radial Nerve Injury
 • Claw Hand
Hand Nerve Injuries ... Presentations • Wrist ... Injury • Claw Hand ... Injuries #Anatomy #Differential ... Diagnosis #MSK #Orthopedics
Trousseau's Sign of Hypocalcemia on Physical Exam

Carpopedal spasm caused by ischemia induced by an inflated blood
Carpopedal spasm caused ... flexion of the wrist ... , thumb, and MCP ... hyperextension of the fingers ... Trousseaus #Sign #PhysicalExam
Mallet Finger
Absence of a fracture does NOT exclude Mallet finger, the extension function of the DIP
caused by disruption ... Exam: Swollen and ... Discharge with orthpedic ... Diagnosis #Management #Hand ... #Orthopedics #MSK
Left Wrist Drop - Radial Nerve Palsy on Physical Examination

Left hand drop due to compression of
Left Wrist Drop ... Examination Left hand ... sleeping as in this case ... #Nerve #Palsy #PhysicalExam ... clinical #video #orthopedics
Gerstmann Syndrome
1) Finger agnosia - Inability to name their own fingers, affecting both sides
2) Right-left confusion
Gerstmann Syndrome 1) Finger ... name their own fingers ... - Inability to differentiate ... right and left, ... : Stroke (main cause
Common Hand Fractures on X-Ray
Mallet finger - injury to the lateral extensor slips
Boutonniere deformity - injury
Common Hand Fractures ... X-Ray Mallet finger ... drdevradiology #Hand ... XRay #Radiology #Wrist ... #differential #
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 ... #msk #orthopedics ... clinical #video #physicalexam