14 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 ... prevent radial and ulnar ... Radiology #XRay #Diagnosis ... #MSK
Mallet Finger
Absence of a fracture does NOT exclude Mallet finger, the extension function of the DIP
terminal extensor tendon ... Exam: Swollen and tender ... DIP joint that ... Radiology #XRay #Diagnosis ... #MSK
Popeye's Sign in Biceps Tendon Rupture

(bunching of biceps when the patient flexes his arm)

#Popeyes #Sign #Biceps
Sign in Biceps Tendon ... Rupture (bunching ... patient flexes his ... #physicalexam #orthopedics ... #sports #msk
Anterior Shoulder Dislocation: Pathogenesis, clinical, and radiographic findings

Trauma, Fall on, outstretched arm, Overhead throwing => Abduction
strength of muscle, tendon ... nerves, muscles, tendons ... #Dislocation #Diagnosis ... signs #symptoms #msk ... #orthopedics #pathophysiology
Chronic Joint Pain - Differential Diagnosis Algorithm 
Intra-Articular
 - Bone
     • Stress
- Differential Diagnosis ... Rupture • ... Intraarticular #MSK ... #Differential #Diagnosis ... #Algorithm #Orthopedics
Mytomes - Segmental Innervation of Muscles
Shoulder	Abduction	C5	Axillary Nerve
Shoulder	Adduction	C6-C8	Thoracodorsal Nerve
Elbow	Flexion	C5	Musculocutaneous Nerve
Elbow	Extension	C7	Radial Nerve
Wrist	Extension	C6	Radial Nerve
Fingers	Flexion	C8	Median Nerve
Fingers	Abduction	T1	Ulnar Nerve
Hip	Flexion	L2	Nerve to Psoas
Hip	Extension	S1	Inferior Gluteal
Axillary Nerve Shoulder ... Fingers Abduction T1 Ulnar ... #MuscleGroups #MSK ... #Orthopedics #Neurology ... #Diagnosis
Bone Deformity / Limp - Differential Diagnosis Algorithm 
Infection
 • Septic Arthritis
 • Cortical Hypertrophy
 •
JointHip Dysplasia ... Patella (e.g., Tendon ... Rupture, Dislocation ... Deformity #Limp #MSK ... #Algorithm #Orthopedics
Greater Trochanteric Bursa Injection 

Usually roll patient on side, find the most tender spot, approximately an
find the most tender ... spot, approximately ... joint. ... #msk #orthopedics ... #hip
Approach to Joint Pain - Diagnostic Framework

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

1) Chronicity:
Pain - Diagnostic ... warm, swollen, tender ... for cell count, culture ... - parvovirus, HIV ... #Joint #Pain #MSK
Anterior Shoulder Dislocation - ED Management
The shoulder is the most commonly dislocated major joint, 95% of
dislocated major joint ... Most common major joint ... Radiology #XRay #Diagnosis ... #Management #Orthopedics ... #Sports #MSK