15 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
- C6, C7, C8 Elbow ... Pronation - C7, C8 Wrist ... drop - Occurs after ... nerve in the radial ... Carpal Tunnel Syndrome
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
Elbow Extension ... C7 Radial Nerve ... Wrist Extension ... C6 Radial Nerve ... #MuscleGroups #MSK
Radial Nerve Anatomy and Function
The Radial nerve is the nerve of elbow, wrist and digital extension.
of elbow, wrist ... and digital extension ... and elbow joints ... When clinically ... drop: ECRB and
Left Wrist Drop - Radial Nerve Palsy on Physical Examination

Left hand drop due to compression of
Left Wrist Drop ... - Radial Nerve Palsy ... #Drop #Radial # ... #clinical #video ... #orthopedics #msk
Synkinetic Wrist Extension Maneuver demonstrating Radial Nerve Palsy as cause for Wrist Drop

Up up, down down.
Nerve Palsy as ... finger/wrist drop ... #Radial #Nerve ... #Palsy #Drop #clinical ... #video #physicalexam
Midcarpal Instability (MCI) of the Wrist

Intrinsic Midcarpal Instability
Usually affects young, hypermobile patients.
It is due to progressive
The proximal carpal ... extensors (ECU, ... ECRB) The distal carpal ... #Wrist #msk #orthopedics ... #clinical #video
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
extension • ... styloid fracture, median ... nerve injury ... #Carpal #Radiology ... Orthopedics #Sports #MSK
Median Nerve Tension Test (Upper-Limb Neurodynamic Tests, ULNT2)

To assess for Median Nerve Peripheral Neuropathy

Elbow extension →
Median Nerve Tension ... Neuropathy Elbow ... forearm supination → wrist ... #ULNT2 #ULTT2 #clinical ... #video #physicalexam
Median Nerve Tension Test (Upper-Limb Neurodynamic Tests, ULNT1)

To assess for Median Nerve Peripheral Neuropathy

Shoulder abduction →
Median Nerve Tension ... forearm supination → wrist ... external rotation → elbow ... #ULNT1 #ULTT1 #clinical ... #video #physicalexam
Elbow Valgus Stress Test for Medial (Ulnar) Collateral Ligament Stability

While palpating the medial joint line of
Test for Medial ... palpating the medial ... flexion and extension ... #Stress #Test #Medial ... #clinical #video