11 results
Scapholunate Dissociation
The spacing between all carpal bones should be 1-2 mm, look for the "Terry Thomas"
"Terry Thomas" sign ... • Due to injury ... ("Terry Thomas sign ... Carpal #Radiology #XRay ... #MSK
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
dorsally and no longer ... , median nerve injury ... #Radiology #XRay ... #Diagnosis #Management ... #MSK
Triquetral Fracture
The triquetrum is the second most commonly fractured carpal bone. Look for the "pooping duck
"pooping duck sign ... injuries: Perilunate dislocation ... Carpal #Radiology #XRay ... #Diagnosis #Management ... #MSK
Distal Radius Fracture 
Distal radius fracture is the most common orthopedic injury. Here's a quick summary.
•
variable gross wrist ... reduction using finger ... Distal #Radiology #XRay ... #Diagnosis #Management ... #Orthopedics #MSK
Posterior Elbow Dislocation
The elbow is the second most commonly dislocated major joint in adults and the
can't make A-OK sign ... ), ligamentous injury ... Posterior #Radiology #XRay ... #Diagnosis #Management ... #MSK
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
Radial Nerve Wrist ... Radial Nerve Fingers ... #MuscleGroups #MSK ... #Orthopedics #Neurology ... #Diagnosis
Positive Hoffmann's sign (finger flexor reflex)

Flexion and adduction of the thumb and flexion of the index
Positive Hoffmann's sign ... indicating cervical injury ... #hand #video #physicalexam ... #msk #orthopedics ... #neurology #sports
Interphalangeal Joint Dislocation
Interphalangeal joint dislocations almost always occur dorsally, look for associated avulsion fractures! Here's a
Hyperextension injury ... IPJoint #Radiology #XRay ... #Diagnosis #Management ... #Hand #Orthopedics ... #MSK
RADIAL HEAD FRACTURE 
Radial head fractures are the most common elbow fracture in adults and are
anterior sail sign ... , elbow dislocation ... Elbow #Radiology #XRay ... #Diagnosis #Management ... #Orthopedics #MSK
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
spared in this injury ... Anterior Shoulder Dislocation ... Dermatomes #Myotomes #diagnosis ... #neurology #sensory ... #motor #arm #physicalexam