3565 results
Mallet Finger
Absence of a fracture does NOT exclude Mallet finger, the extension function of the DIP
Mallet finger, the extension ... of the terminal extensor ... immobilize • Splint: Extension ... Mallet #Finger #Radiology ... #Orthopedics #MSK
Interphalangeal Joint Dislocation
Interphalangeal joint dislocations almost always occur dorsally, look for associated avulsion fractures! Here's a
lateral slips of the extensor ... phalanx to enable extension ... phalanx to enable extension ... Dislocation #IPJoint #Radiology ... #Orthopedics #MSK
Flexor Tenosynovitis on POCUS

Index finger including flexor tendon being viewed.  Note small fluid around the
pain on passive extension ... Tenosynovitis #POCUS #MSK ... #clinical #radiology
Triquetral Fracture
The triquetrum is the second most commonly fractured carpal bone. Look for the "pooping duck
wrist flexion and extension ... Wrist #Carpal #Radiology ... Orthopedics #Sports #MSK
Scapholunate Dissociation
The spacing between all carpal bones should be 1-2 mm, look for the "Terry Thomas"
pain with wrist extension ... Scaphoid #Carpal #Radiology ... Orthopedics #Sports #MSK
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
pain with wrist extension ... Wrist #Carpal #Radiology ... Orthopedics #Sports #MSK
Infantile Spasms 
Associated with Tuberous Sclerosis 
1) Flexor spasms: Sudden flexion of neck, trunk, arms, and
abdominal muscles 2) Extensor ... spasms: Abrupt extension ... ) Mixed flexor-extensor ... and arms, and extension
Clarke's Test (Patellar Grind Test)

Indicates Patellofemoral dysfunction.
 - Patient with knee in extension. Push posterior on
Patient with knee in extension ... of patella then ask ... Patellofemoral #msk
Common Hand Fractures on X-Ray
Mallet finger - injury to the lateral extensor slips
Boutonniere deformity - injury
to the lateral extensor ... central band of extensor ... Fractures #XRay #Radiology
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
Musculocutaneous Nerve Elbow Extension ... Radial Nerve Wrist Extension ... to Psoas Hip Extension ... Tibial Nerve Knee Extension ... #MuscleGroups #MSK