25 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 ... Fingers Abduction T1 Ulnar ... Gluteal Nerve Knee ... #MuscleGroups #MSK ... Orthopedics #Neurology #Diagnosis
Spinal Cord Injury by Nerve Root Levels
Spinal Root	Sensory	Motor	Reflex
C4	Acromioclavicular Joint	Respiration	None
C5	Radial Antecubital Fossa	Elbow Flexion	Biceps Reflex
C6	Dorsal Thumb	Wrist Extension	Brachioradialis Reflex
C7	Dorsal
C5 Radial Antecubital ... T1 Ulnar Antecubital ... Femoral Condyle Knee ... Ankle Dorsiflexion Knee ... #differential #diagnosis
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Motor Function Shoulder ... Abduction - C8-T1 (ulnar ... Anterior Shoulder ... Dermatomes #Myotomes #diagnosis ... sensory #motor #arm #physicalexam
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
capitate ("apple") should ... tea cup") which should ... Splint: Sugar tong ... Radiology #XRay #Diagnosis ... Orthopedics #Sports #MSK
Tone - Leg Traction on Physical Exam
Leg traction is done by holding the leg by the
Tone - Leg Traction ... The knee should ... extension of the knee ... Lower #Extremity #tone ... #Newborn #PhysicalExam
Medial Meniscus Bucket Handle Tear - MSK Radiology
Imaging Findings:
 • Truncation of the medial meniscus on
Handle Tear - MSK ... peripheral red zone ... Differential diagnosis ... BucketHandle #Tear #knee ... #msk
Causes of Knee Effusions - Differential Diagnosis Framework

Knee Effusion Red Flags:
1. Fever/Chills/Joint pain/Night sweats/Weight loss
	- DDX:
		-
- Differential Diagnosis ... Framework Knee ... - Aneurysmal bone ... #differential #diagnosis ... #msk #physicalexam
Triquetral Fracture
The triquetrum is the second most commonly fractured carpal bone. Look for the "pooping duck
distal to distal ulna ... dislocation, distal radius ... or ulna fractures ... Radiology #XRay #Diagnosis ... Orthopedics #Sports #MSK
Positive Lachman's Test

The Lachman test is a clinical test used to diagnose injury of the anterior
clinical test used to diagnose ... The knee is flexed ... The examiner should ... place one hand ... Lachman #Test #ACL #PhysicalExam
Orthopedic Dislocations (Shoulder, Elbow and Hip) - Diagnosis and Management Summary
Shoulder Dislocation
 • Fall on the
Elbow and Hip) - Diagnosis ... of arm M – Medial ... BE DONE ASAP TO ... Affected hip and knee ... #Elbow #Hip #Diagnosis