9 results
Radial Nerve Anatomy and Function
The Radial nerve is the nerve of elbow, wrist and digital extension.
Radial Nerve Anatomy ... and digital extension ... the back of the arm ... provide central and ulnarly ... extension) but ECRL
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
extension • ... fracture, median nerve ... #Carpal #Radiology ... #XRay #Diagnosis ... #Sports #MSK
Triquetral Fracture
The triquetrum is the second most commonly fractured carpal bone. Look for the "pooping duck
Complications are ... ulna, pain with wrist ... flexion and extension ... dislocation, distal radius ... #Sports #MSK
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
musculocutaneous) • Extension ... C7 (median) • Extension ... C8 (median) • Extension ... nerve in the radial ... sensory #motor #arm
Extensor Carpi Ulnaris (ECU) Synergy Test for ECU Tendinitis

With the patient's hand supinated, the examiner grasps
Extensor Carpi Ulnaris ... palpating the ECU tendon ... The patient radially ... aspect of the wrist ... #carpi #ulnaris
Scapholunate Dissociation
The spacing between all carpal bones should be 1-2 mm, look for the "Terry Thomas"
box, pain with wrist ... extension • Possible ... injuries: distal radius ... #Radiology #XRay ... #Orthopedics #Sports
Interphalangeal Joint Dislocation
Interphalangeal joint dislocations almost always occur dorsally, look for associated avulsion fractures! Here's a
ligaments (prevent radial ... and ulnar displacernent ... phalanx to enable extension ... phalanx to enable extension ... IPJoint #Radiology #XRay
Rheumatoid arthritis (RA): Pathogenesis and Joint diseases features
 • RA affects 1% of population, women >
Stimulation of nerve ... Swelling notable on Xray ... boggy" joints, esp carpal ... Boutonniere's ulnar ... drift of fingers, radial
Extensor Carpi Ulnaris (ECU) subluxation 
The Extensor Carpi Ulnaris (ECU), is the must ulnar of the
Extensor Carpi Ulnaris ... Carpi Ulnaris ( ... relevant body parts ... #Carpi #Ulnaris ... #physicalexam #video