Radial nerve: Ella would be unable extend her wrist or digits.Anterior interosseus nerve (branch of median nerve): Ella would be unable to make A-OK sign (cannot flex interphalangeal joint of this thumb and DIPJ of her index finger.radiocapitellar joint governs forearm rotationĪpproximately 7 % of supracondylar fractures are associated with nerve injury, what nerves would most likely be effected and how would you test these? ulnotrochlear articulation directs flexion and extensionĢ. The elbow has two functionally independent articulations that share a synovial compartment. Assesses for radial dislocation)Įlla cannot pronate or supernate her arm, explain why she cannot do this using biomechanics of the elbow. Alignment of the radius and ulnar with the distal humerus (use Radio-capitellar line: line drawn down neck of radius on AP film, should pass through the center of the capitellum.If there is a displaced supracondylar fracture this line will pass in front of capitellum, right image below ) Angulation (use the Anterior humeral line: passes through middle 1/3 of capitellum - see image below on left.Location and especially presence of articular involvement.There is also raised posterior and anterior fat bad and surrounding soft tissue swelling.ĪP view: There is a visible supracondylar fracture line over the medial aspect of the humerus, no apparent intra-articular involvement, rotation, angulation or displacement in this view. Lateral view: demonstrates an obvious fracture line on the anterior supracondylar region of the humerus, less than 1/3 of the capitellum is anterior to the anterior humeral line. First ensure correct film, views, and the films are technically adequate, assessment should include:
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