American Board of Surgical Assistants (ABSA) Orthopedic Practice Test

In an injury to the olecranon, which tendons should be considered for possible rupture?

1. Triceps and Biceps

2. Brachialis and Biceps

3. Subscapularis and Deltoid

4. Supinator and Pronator

The correct answer is: Brachialis and Biceps

When considering an injury to the olecranon, the tendons that are most relevant to examine for possible rupture are the triceps tendon, which is essential for elbow extension, and the biceps tendon, which primarily aids in elbow flexion and forearm supination. However, the more prominent and clinically significant tendon related to the olecranon is the triceps tendon, as it directly connects to the olecranon process, allowing for the extension of the forearm. The other options include tendons that are not directly related to the olecranon. For instance, the brachialis tendon primarily influences flexion, but its connection is more associated with the distal humerus than the olecranon. Meanwhile, the subscapularis and deltoid tensions pertain to shoulder movements rather than any elbow function, and the supinator and pronator tendons are involved in forearm rotation, therefore not significantly linked with the olecranon. In summary, the primary focus on the possibility of a rupture due to an injury to the olecranon should be the triceps tendon, which is essential for the extension at the elbow, making it critical to assess in cases of olecranon injury.