11 results
Interphalangeal Joint Dislocation
Interphalangeal joint dislocations almost always occur dorsally, look for associated avulsion fractures! Here's a
PIP joints are ... and PIP joints ... Complications include swan neck ... Radiology #XRay #Diagnosis ... #Orthopedics #MSK
Approach to Joint Pain

History:
Is the pain from:
	• Joint
	• Adjacent bursa
	• Tendon
	• Ligament
	• Bone
	• Muscle
	• Referred from
Approach to Joint ... Adjacent bursa • Tendon ... e.g., congenital hip ... #Pain #MSK #rheumatology ... #differential #diagnosis
Approach to Joint Pain - Diagnostic Framework

1) Chronicity
2) Inflammatory vs Non-Inflammatory
3) Number of Joints Involved

1) Chronicity:
Approach to Joint ... Pain - Diagnostic ... warm, swollen, tender ... - parvovirus, HIV ... #Joint #Pain #MSK
Extra-articular and Other Conditions Associated with Joint Pain

Eyes
  • Iritis or uveitis - Spondyloarthropathies, Sarcoidosis,
Associated with Joint ... Musculoskeletal System Tender ... nodes (PIP joints ... Boutonnière and swan-neck ... #differential #diagnosis
Psoriatic Arthritis: Pathogenesis and Clinical findings

In tendons and connective tissues:
 • Enthesitis  - Pain/tenderness over
findings In tendons ... , ridging, oil spots ... Arthritis of DIP ... of IP joints ... pathophysiology #diagnosis
Distinguishing between Inflammatory and Degenerative joint disease
Inflammatory Joint Disease
 • Swelling stimulates joint nociceptors -> Pain
in Rheumatoid arthritis ... tend to bear the ... affects the knee hip ... Comparison #Versus #MSK ... JointDisease #JointPain #Diagnosis
Bone Deformity / Limp - Differential Diagnosis Algorithm 
Infection
 • Septic Arthritis
 • Cortical Hypertrophy
 •
- Differential Diagnosis ... JointHip Dysplasia ... Disease Knee Joint ... Patella (e.g., Tendon ... Deformity #Limp #MSK
Approach to Joint Pain - Arthritis Differential Diagnosis Framework

Inflammatory Versus Noninflammatory Pain
 • Is it inflammatory
Approach to Joint ... Differential Diagnosis ... spine, shoulders, hips ... Parvovirus B19 • HIV ... #Diagnosis #MSK
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
- Differential Diagnosis ... Fever/Chills/Joint ... Brucellosis - Viruses: HIV ... #differential #diagnosis ... #msk #physicalexam
Leg Pain - Differential Diagnosis Framework

Bone/Joint Causes of Leg Pain:
 • Fracture
 • Arthritis
 • Gout/pseudogout
- Differential Diagnosis ... Herpes zoster - HIV ... #differential #diagnosis ... lower #extremity #msk ... #physicalexam