47 results
Midcarpal Instability (MCI) of the Wrist

Intrinsic Midcarpal Instability
Usually affects young, hypermobile patients.
It is due to progressive
slightly extended, and ... when ulnar deviation ... extensors (ECU, ... #msk #orthopedics ... clinical #video #physicalexam
Rock Paper Scissors - Assessment of Nerve Damage in Upper Limb Injuries
Rock - Median Nerve
 •
(4%), Radius & Ulnar ... Fractures • Extension ... of wrist & MCP ... Small muscles of hand ... UpperExtremities #diagnosis #neurology
Hand Nerve Injuries - Common Presentations
 • Wrist Drop - Radial Nerve Injury
 • Claw Hand
Hand Nerve Injuries ... Presentations • Wrist ... - Ulnar Nerve Injury ... Nerve #Injuries #Anatomy ... Differential #Diagnosis #MSK
Triquetral Fracture
The triquetrum is the second most commonly fractured carpal bone. Look for the "pooping duck
distal to distal ulna ... , pain with wrist ... flexion and extension ... distal radius or ulna ... Orthopedics #Sports #MSK
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Pronation - C7, C8 Wrist ... Abduction - C8-T1 (ulnar ... Carpal Tunnel Syndrome ... Myotomes #diagnosis #neurology ... sensory #motor #arm #physicalexam
Wrist Anatomy - Anatomy of the Carpal Bones
There are several mnemonics that people use to remember
Wrist Anatomy - ... Anatomy of the Carpal ... Pal @drdevrad #Wrist ... #Anatomy #Carpal ... clinical #radiology #msk
Mytomes - Segmental Innervation of Muscles
Shoulder	Abduction	C5	Axillary Nerve
Shoulder	Adduction	C6-C8	Thoracodorsal Nerve
Elbow	Flexion	C5	Musculocutaneous Nerve
Elbow	Extension	C7	Radial Nerve
Wrist	Extension	C6	Radial Nerve
Fingers	Flexion	C8	Median Nerve
Fingers	Abduction	T1	Ulnar Nerve
Hip	Flexion	L2	Nerve to Psoas
Hip	Extension	S1	Inferior Gluteal
Radial Nerve Wrist ... Extension C6 Radial ... Fingers Abduction T1 Ulnar ... #MuscleGroups #MSK ... #Orthopedics #Neurology
Scapholunate Dissociation
The spacing between all carpal bones should be 1-2 mm, look for the "Terry Thomas"
onto outstretched hand ... Tenderness to anatomic ... box, pain with wrist ... extension • Possible ... Orthopedics #Sports #MSK
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
Dislocation On lateral wrist ... extension • ... associated injuries: Carpal ... #Carpal #Radiology ... Orthopedics #Sports #MSK
Extensor Carpi Ulnaris (ECU) Synergy Test for ECU Tendinitis

With the patient's hand supinated, the examiner grasps
Extensor Carpi Ulnaris ... along the dorsal ulnar ... aspect of the wrist ... clinical #video #physicalexam ... #msk #orthopedics