140 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
Innervation of Muscles Shoulder ... Axillary Nerve Shoulder ... Fingers Abduction T1 Ulnar ... Nerve Hip Flexion ... #MuscleGroups #MSK
Posterior Ankle Impingement (Os Trigonum) Syndrome - MSK Radiology
Imaging Findings:
 • Os trigonum which has marrow
Trigonum) Syndrome - MSK ... hallucis longus Differential ... torn ligament on MRI ... osteochondral lesion ... Radiology #diagnosis #msk
Hand Nerve Injuries - Common Presentations
 • Wrist Drop - Radial Nerve Injury
 • Claw Hand
• Claw Hand - Ulnar ... Injuries #Anatomy #Differential ... #Diagnosis #MSK
Chronic Shoulder Pain - Differential Diagnosis Algorithm
4 tests for the AC joint:
1. Direct palpation
2. Cross-arm shoulder
Chronic Shoulder ... Pain - Differential ... Cross-arm shoulder ... #Pain #Differential ... Diagnosis #Algorithm #MSK
Humeral Avulsion of the Inferior Glenohumeral Ligament (HAGL)
 • Imaging Findings:
 • Large defect of the
WITHOUT Bankart lesion ... Differential diagnosis ... Reverse HAGL (RHAGL) lesion ... #clinical #mri ... Radiology #diagnosis #msk
Focal Periphyseal Edema (FOPE lesion) - MSK Radiology
Imaging Findings:
 • Arrows identifying the characteristic edema-like signal
) - MSK Radiology ... repeated follow-up MRI ... (save $$) Differential ... #clinical #mri ... Radiology #diagnosis #msk
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
Ring-Enhancing Lesions ... Ring-Enhancing Lesions ... Compatible syndrome + MRI ... lesions + toxo ... #Brain #differential
Diagram of different types of bone tumors that can occur around the knee on XRay -
- punched out lesions ... • Aggressive lesion ... Diagnosis #Bony #Differential ... Radiology #XRay #msk ... #lesions #adult
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Motor Function Shoulder ... C8 Elbow: • Flexion ... Abduction - C8-T1 (ulnar ... Adduction - C7-T1 (ulnar ... Anterior Shoulder
Diagram of different types of bone tumors that can occur around the knee on XRay -
other aggressive lesion ... Diagnosis #Bony #Differential ... peds #pediatrics #msk ... #lesions #adult