18 results
Anterior Shoulder Dislocation - ED Management
The shoulder is the most commonly dislocated major joint, 95% of
Anterior Shoulder ... injuries: Axillary nerve ... greater tuberosity fracture ... Radiology #XRay #Diagnosis ... Orthopedics #Sports #MSK
Anterior Shoulder Dislocation: Pathogenesis, clinical, and radiographic findings

Trauma, Fall on, outstretched arm, Overhead throwing => Abduction
Anterior Shoulder ... Shoulder Dislocation ... Structural damage to nerves ... #Diagnosis #signs ... #symptoms #msk
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity ... Motor Function Shoulder ... Anterior Shoulder ... regimental badge" anesthesia ... Dermatomes #Myotomes #diagnosis
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
Innervation of Muscles Shoulder ... Shoulder Adduction ... Hip Extension S1 Inferior ... #MuscleGroups #MSK ... Orthopedics #Neurology #Diagnosis
Humeral Avulsion of the Inferior Glenohumeral Ligament (HAGL)
 • Imaging Findings:
 • Large defect of the
shoulder instability ... Differential diagnosis ... BHAGL): Avulsion fracture ... clinical #Radiology #diagnosis ... #msk
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Lower Extremity ... saddle (perineal) anesthesia ... damage to peroneal nerve ... such as fibular fracture ... Dermatomes #Myotomes #diagnosis
Supracondylar Elbow Fracture
• Most common elbow fracture in children, peak age 5-7 
• When looking at
review alignment (anterior ... identified but anterior ... interosseous nerve ... Radiology #XRay #Diagnosis ... #Orthopedics #MSK
Leg Pain - Differential Diagnosis Framework

Bone/Joint Causes of Leg Pain:
 • Fracture
 • Arthritis
 • Gout/pseudogout
- Differential Diagnosis ... Leg Pain: • Fracture ... #differential #diagnosis ... #lower #extremity ... #msk #physicalexam
Posterior Elbow Dislocation
The elbow is the second most commonly dislocated major joint in adults and the
, complex = fracture ... , neuropraxia (anterior ... interosseous nerve ... Radiology #XRay #Diagnosis ... Orthopedics #Sports #MSK
Acute Spinal Cord Injuries: Pathogenesis and clinical findings
 • Anterior Cord Syndrome -> Anterior spinal artery
clinical findings • Anterior ... Cord Syndrome -> Anterior ... reflex. saddle anesthesia ... Injury #Syndromes #diagnosis ... signs #symptoms #msk