20 results
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
commonly, 60%; also ... fracture, median nerve ... #Carpal #Radiology ... #XRay #Diagnosis ... #Sports #MSK
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity ... Pronation - C7, C8 Wrist ... Horner Syndrome Wrist ... Carpal Tunnel Syndrome ... Dermatomes #Myotomes #diagnosis
Left Wrist Drop - Radial Nerve Palsy on Physical Examination

Left hand drop due to compression of
Left Wrist Drop ... in this case, due ... affected limb, also ... #orthopedics #msk ... #sports #neurology
Scapholunate Dissociation
The spacing between all carpal bones should be 1-2 mm, look for the "Terry Thomas"
Thomas" sign to diagnosis ... box, pain with wrist ... #TerryThomas #Wrist ... #Management #Orthopedics ... #Sports #MSK
Triquetral Fracture
The triquetrum is the second most commonly fractured carpal bone. Look for the "pooping duck
ulna, pain with wrist ... fractures • ED Management ... #XRay #Diagnosis ... #Management #Orthopedics ... #Sports #MSK
Scaphoid Fractures
The scaphoid is the most commonly fractured carpal bone. Remember, if a fracture is suspected
proximal portion as ... Scaphoid #Fracture #Wrist ... #XRay #Diagnosis ... #Management #Orthopedics ... #Sports #MSK
Leg Pain - Differential Diagnosis Framework

Bone/Joint Causes of Leg Pain:
 • Fracture
 • Arthritis
 • Gout/pseudogout
- Differential Diagnosis ... • Sciatica • Tarsal ... #differential #diagnosis ... #lower #extremity ... #msk #physicalexam
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Lower Extremity ... Commonly caused ... damage to peroneal nerve ... fibular neck such as ... Dermatomes #Myotomes #diagnosis
Chronic Hypertensive Retinopathy: Pathogenesis and clinical findings

Ophthalmic Artery Hypertension
Stage 1: Mild/vasoconstrictive
 • Acute and chronic vasospasm
damaged BRB appears as ... nerve fiber layer ... -> Cotton-wool Spots ... -> Elschnig's Spots ... ophthalmology #diagnosis
Amyotrophic Lateral Sclerosis (ALS) Summary
ALS: combination of the clinical examination finding of amyotrophy with the pathologic
- Causes progressive ... segment: Upper extremity ... , lower extremity ... activity between nerve ... #management