38 results
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 ... Gluteal Nerve Knee ... Tibial Nerve Knee ... MuscleGroups #MSK #Orthopedics ... #Neurology #Diagnosis
Brudzinski’s Sign in Meningitis (first described in 19th century by Dr. Josef Brudzinski)

Brudzinski's sign is characterized
, resulting in pain ... While the pathophysiology ... for the hip/knee ... meninges, reducing pain ... despite severe disease
Scapholunate Dissociation
The spacing between all carpal bones should be 1-2 mm, look for the "Terry Thomas"
bones should be ... Thomas" sign to diagnosis ... bones should be ... anatomic snuff box, pain ... ED Management: Pain
Trendelenburg Gait: Pathogenesis and clinical findings

Skeletal Pathology of the Hip
 • Arthritis
 • Congenital hip dysplasia
in the Spinal canal ... Sacroiliac Joint Pain ... Valgus position of knee ... Trendelenburg #Gait #pathophysiology ... symptoms #signs #diagnosis
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
capitate ("apple") should ... tea cup") which should ... dorsal wrist, pain ... ED Management: Pain ... Radiology #XRay #Diagnosis
Causes of Bone/Joint Pain in Sickle Cell Disease
Vaso-occlusive pain:
 • Mechanism: ischemic pain
 • Can present
in Sickle Cell Disease ... predispose to other orthopedic ... common sites: hip ... , shoulder ... #differential #diagnosis
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 pain ... - Systemic disease ... Brucellosis - Viruses: HIV ... #differential #diagnosis
Orthopedic Dislocations (Shoulder, Elbow and Hip) - Diagnosis and Management Summary
Shoulder Dislocation
 • Fall on the
Orthopedic Dislocations ... and Hip) - Diagnosis ... knee are flexed ... axis of femur #Orthopedics ... #Elbow #Hip #Diagnosis
Femoral Head Fracture: Pathogenesis and clinical findings
 • Posterior hip dislocation -> Impaction force from femoral
• Posterior hip ... Leg • Shooting pains ... Fractures #msk #diagnosis ... #pathophysiology ... signs #symptoms #orthopedics
Anterior Shoulder Dislocation: Pathogenesis, clinical, and radiographic findings

Trauma, Fall on, outstretched arm, Overhead throwing => Abduction
Anterior Shoulder ... capsule or bone -> Pain ... #Dislocation #Diagnosis ... symptoms #msk #orthopedics ... #pathophysiology