6 results
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Lower Extremity ... Reflexes: • Knee ... • Cauda Equina Syndrome ... saddle (perineal) anesthesia ... Narrowing of spinal canal
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity ... Carpal Tunnel Syndrome ... Anterior Shoulder Dislocation ... regimental badge" anesthesia ... #UpperLimb #Extremity
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
- Differential ... Seronegative Reactive Syndrome ... fracture - Patellar dislocation ... Effusions #causes #differential ... #diagnosis #msk
Leg Pain - Differential Diagnosis Framework

Bone/Joint Causes of Leg Pain:
 • Fracture
 • Arthritis
 • Gout/pseudogout
Leg Pain - Differential ... • Sciatica • Tarsal ... cyanosis - Cool extremity ... diagnosis #lower #extremity ... #msk #physicalexam
Bone Deformity / Limp - Differential Diagnosis Algorithm 
Infection
 • Septic Arthritis
 • Cortical Hypertrophy
 •
Legg-Calve-Perthes Disease Knee ... Patellofemoral Syndrome ... Tendon Rupture, Dislocation ... Deformity #Limp #MSK ... #Differential #
Posterior Knee Dislocation Injury
Specifically, POSTERIOR KNEE DISLOCATIONS can have significant associated injury that needs unique approach
Posterior Knee Dislocation ... Compartment syndrome ... consider compartment syndrome ... #Injury #msk #clinical ... #video #nsfw