7 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Motor Function Shoulder ... spared in this injury ... Carpal Tunnel Syndrome ... Dislocation - May ... sensory #motor #arm
Humeral Avulsion of the Inferior Glenohumeral Ligament (HAGL)
 • Imaging Findings:
 • Large defect of the
Ligament (HAGL) can ... dislocation WITHOUT ... Differential diagnosis ... capsuloligamentous injury ... Radiology #diagnosis #msk
Hearing Loss - Differential Diagnosis Framework

Hearing Loss Types:
• Conductive
• Sensorineural
• Mixed
Presbycusis is the most common type
Hearing Loss - Differential ... The evaluation should ... auditory nerve (CN ... cause unknown) ... Noise trauma ○ MS
Causes of Lactate Elevation, Lactic Acidosis - Differential Diagnosis

The most common causes of hyperlactatemia are usually:
Lactic Acidosis - Differential ... liver or renal injury ... or diagnostic tests ... gluconeogenesis Liver Injury ... Acidosis #Elevation #Differential
Extensor Carpi Ulnaris (ECU) subluxation 
The Extensor Carpi Ulnaris (ECU), is the must ulnar of the
Extensor Carpi Ulnaris ... The Extensor Carpi ... What causes ECU ... of the sheath can ... #msk
Prior anterior glenohumeral joint dislocation with Hill-Sachs fracture and Perthes lesion
Imaging Findings:
 • The arrow is
• These ovals are ... Case description ... surgical repair Differential ... Similar injury to ... Radiology #diagnosis #msk
Transverse Myelitis Overview

Focal inflammatory disorder of the spinal cord resulting in rapid onset of weakness, sensory
Presentation: Injury ... extensors of the arms ... negative, MOG-IgG test ... • Infectious causes ... management #neurology #differential