Lab 4 - Module 1 - Extensor Compartments of the Arm and Forearm: Page 1 of 9

READINGS:

Gray's Anatomy for Students (Fourth Edition): Pages: 744-782

CASE REPORT:

37 y/o male presented to the emergency department after falling on the ice and landing on his right elbow. His chief complaint was extreme pain in his right arm. X-ray’s revealed a mid-shaft humerus fracture.

EXAMINATION:

• After further examination it was revealed the patient had significant weakness with wrist extension of the right wrist.

DISPOSITION:

• The patient was splinted and referred to orthopaedic surgery for a consult. The decision to treat conservatively was made.

	Why do you think the proximal fracture segment appears abducted?
To answer this question, think about what muscle s attach to the upper part of the humerus.

	Why is the patient experiencing weakness with wrist extension when the fracture is in the arm and not forearm?
The answer to this question was given to you during Lab 3.