Carpal wrist msk pathophysiology symptoms extensor elbow - GrepMed

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Midcarpal Instability (MCI) of the Wrist

Intrinsic Midcarpal Instability
Usually affects young, hypermobile patients.
It is due to progressive

Instability (MCI) of the Wrist ... The proximal carpal ... extensors (ECU, ... ECRB) The distal carpal ... #msk #orthopedics

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

Thoracodorsal Nerve Elbow ... Musculocutaneous Nerve Elbow ... Extension C7 Radial ... Nerve Wrist Extension ... #MuscleGroups #MSK

Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which

Dislocation On lateral wrist ... extension • ... associated injuries: Carpal ... #Carpal #Radiology ... Orthopedics #Sports #MSK

$Triquetral Fracture The triquetrum is the second most commonly fractured carpal bone. Look for the "pooping duck$

commonly fractured carpal ... ulna, pain with wrist ... flexion and extension ... Triquetrum #Fracture #Wrist ... Orthopedics #Sports #MSK

Scapholunate Dissociation
The spacing between all carpal bones should be 1-2 mm, look for the "Terry Thomas"

spacing between all carpal ... box, pain with wrist ... extension • Possible ... #TerryThomas #Wrist ... Orthopedics #Sports #MSK

Cubital Tunnel Syndrome: Pathogenesis and clinical findings

• Paresthesia of 5th and medial half of 4th

Medial hand and elbow ... pain • + elbow ... Syndrome #Diagnosis #pathophysiology ... #signs #symptoms ... #msk

Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
• Abduction - C5,C6 (axillary)
• Adduction - C6, C7,

- C6, C7, C8 Elbow ... Pronation - C7, C8 Wrist ... C7 (median) • Extension ... Horner Syndrome Wrist ... Carpal Tunnel Syndrome

Maudsley's Test for Lateral Epicondylitis ("Tennis Elbow")

With the wrist prone, resist extension of the 3rd digit,

Epicondylitis ("Tennis Elbow ... ") With the wrist ... prone, resist extension ... movement stresses the extensor ... #physicalexam #msk

Maudsley's Test for Lateral Epicondylitis ("Tennis Elbow")

With the wrist prone, the patient attempts extension of the

Epicondylitis ("Tennis Elbow ... ") With the wrist ... patient attempts extension ... movement stresses the extensor ... #physicalexam #msk

Cozen’s Test for Lateral Epicondylitis ("Tennis Elbow")

Also known as the "resisted wrist extension test".
With

the "resisted wrist ... extension test" ... hand in a fist, ask ... dorsiflex the wrist ... #physicalexam #msk

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