6 results
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
Causes of Knee Effusions ... Osteoarthritis - Overuse syndrome ... Seronegative Reactive Syndrome ... fracture - Patellar dislocation ... diagnosis #msk #physicalexam
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Lower Extremity Dermatomes ... Reflexes: • Knee ... • Cauda Equina Syndrome ... Commonly caused ... sensory #motor #leg #physicalexam
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity Dermatomes ... hand" ± Horner Syndrome ... Carpal Tunnel Syndrome ... Anterior Shoulder Dislocation ... sensory #motor #arm #physicalexam
Extreme Patellofemoral Joint Instability (PFJI)

In this video you can see an extreme rare case of bilateral
Patellofemoral Joint Instability ... an extreme rare case ... weakness 5️⃣abnormal knee ... Clinical #Video #PhysicalExam ... #Orthopedics #Knee
Posterior Knee Dislocation Injury
Specifically, POSTERIOR KNEE DISLOCATIONS can have significant associated injury that needs unique approach
Posterior Knee Dislocation ... : ~25% cases. ... Compartment syndrome ... CLINICAL: instability ... consider compartment syndrome
Bone Deformity / Limp - Differential Diagnosis Algorithm 
Infection
 • Septic Arthritis
 • Cortical Hypertrophy
 •
Arthritis Other Causes ... Legg-Calve-Perthes Disease Knee ... Patellofemoral Syndrome ... Tendon Rupture, Dislocation ... #Orthopedics #Causes