Nerve Transfers: Nerves to the pectoralis minor (and major) are often a useful source for donor nerve material (for use in nerve transfer procedures) in brachial plexus injury and this muscle should be examined with the pectoralis major muscle.
Strength Testing: Position ““ the subject is in supine with arms by their side. Stabilize ““ None unless abdominal muscles are weak, in which case the rib cage on the same side being tested should be held down firmly. Resist ““ against forward thrust of the shoulder with the arm at the side. The subject must exert no downward pressure from the head to force the shoulder forward. If necessary, elevate the subject”™s hand and elbow off the table.
Palpation: Can not be palpated as is deep to the pectoralis major.
Possible Substitutions: Pectoralis major.
Origin: Superior margins and outer surfaces of the third, fourth, and fifth ribs near the cartilages and fascia over the corresponding intercostals muscles.
Insertion: Medial border and superior surface of the coracoids process of the scapula.