9 results
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 ... Ligamentous injuries - Meniscal ... fracture - Patellar dislocation ... diagnosis #msk #physicalexam
Ober's Test for Iliotibial Band Syndrome

Ober's Test assesses for iliotibial band syndrome.  With the patient
Iliotibial Band Syndrome ... and abduct the hip ... hip #clinical #video ... #physicalexam # ... sports #msk #orthopedics
Ober's Test for TFL/ITB Inflammation

With the patient in the lateral position, affected side up.  The
Ober's Test for ... The examiner supports ... Iliotibial #Band #Syndrome ... #video #physicalexam ... #sports #msk #orthopedics
Bone Deformity / Limp - Differential Diagnosis Algorithm 
Infection
 • Septic Arthritis
 • Cortical Hypertrophy
 •
Deformity / Limp - Differential ... Joint • Hip Dysplasia ... Legg-Calve-Perthes Disease Knee ... Patellofemoral Syndrome ... Tendon Rupture, Dislocation
Posterior Knee Dislocation Injury
Specifically, POSTERIOR KNEE DISLOCATIONS can have significant associated injury that needs unique approach
Posterior Knee Dislocation ... nerve injury (25%) TEST ... Check hip and ankle ... Compartment syndrome ... special ligament/meniscus
Approach to Joint Pain

History:
Is the pain from:
	• Joint
	• Adjacent bursa
	• Tendon
	• Ligament
	• Bone
	• Muscle
	• Referred from
present both at rest ... trauma (e.g., meniscal ... e.g., congenital hip ... osteopetrosis, avascular ... approach #workup #differential
VON-CHOP Mnemonic for Orthopedic Emergencies
V - Vascular compromise (eg ischemic leg)
O - Open fracture
N - Neurological
Emergencies V - Vascular ... - Compartment syndrome ... H - Hip dislocation ... Osteomyelitis (septic arthritis ... diagnosis #consult #differential
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
Vasculitides - Differential ... and bullous or vesicular ... • Cogan Syndrome ... retinopathy Lab Tests ... Cryoglobulins • HIV
Autoimmune Myositis - Differential Diagnosis Framework

Inflammatory Myopathies: Commonly symmetric proximal muscle weakness, no substantial muscle pain
Autoimmune Myositis - Differential ... Diagnostic Tests ... weakness + atrophy- Hip ... • Nonerosive arthritis ... #rheumatology #differential