56 results
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
- Differential ... Diagnosis Framework ... Fever/Chills/Joint pain ... - Aneurysmal bone ... #diagnosis #msk
Diagram of different types of bone tumors that can occur around the knee on XRay -
sequestrum, cloaca, and ... blade of grass sign ... Diagnosis #Bony ... #Differential #Radiology ... #XRay #msk #lesions
Causes of Bone/Joint Pain in Sickle Cell Disease
Vaso-occlusive pain:
 • Mechanism: ischemic pain
 • Can present
common sites: hip ... XR, MRI to dx and ... Osteomyelitis / Septic Arthritis ... • Differentiate ... #diagnosis #causes
Trendelenburg Gait: Pathogenesis and clinical findings

Skeletal Pathology of the Hip
 • Arthritis
 • Congenital hip dysplasia
Arthritis ... Sacroiliac Joint Pain ... Valgus position of knee ... causes #symptoms #signs ... #diagnosis #msk
Triquetral Fracture
The triquetrum is the second most commonly fractured carpal bone. Look for the "pooping duck
fractured carpal bone ... "pooping duck sign ... arthritis if missed ... #XRay #Diagnosis ... #Sports #MSK
Femoral Head Fracture: Pathogenesis and clinical findings
 • Posterior hip dislocation -> Impaction force from femoral
tear a portion of bone ... weight-bear • Arthritic ... Leg • Shooting pains ... FemoralHead #Fractures #msk ... #diagnosis #pathophysiology
Approach to Joint Pain

History:
Is the pain from:
	• Joint
	• Adjacent bursa
	• Tendon
	• Ligament
	• Bone
	• Muscle
	• Referred from
• Ligament • Bone ... e.g., congenital hip ... #MSK #rheumatology ... approach #workup #differential ... #diagnosis #arthritis
Diagram of different types of bone tumors that can occur around the knee on XRay
Age <
occur around the knee ... blade of grass sign ... Lesions #Bony #Differential ... #Diagnosis #Radiology ... #XRay #MSK #pediatrics
Bone Deformity / Limp - Differential Diagnosis Algorithm 
Infection
 • Septic Arthritis
 • Cortical Hypertrophy
 •
Bone Deformity / ... Limp - Differential ... Diagnosis Algorithm ... Legg-Calve-Perthes Disease Knee ... Deformity #Limp #MSK
Psoriatic Arthritis: Pathogenesis and Clinical findings

In tendons and connective tissues:
 • Enthesitis  - Pain/tenderness over
Enthesitis - Pain ... insertion into bone ... Arthritis of DIP ... pathophysiology #diagnosis ... #signs #symptoms