• Innervates the pectoralis major (sternocostal head) and pectoralis minor muscles
• Originates from roots C6, C7, C8, T1.
Physical examination of the medial pectoral nerve includes the motor examination of the pectoralis major muscle. The medial pectoral nerve primarily innervates the sternocostal head of the pectoralis major and could provide a small contribution to the clavicular head.
Detailed Examination Links:
Summarized Examination: Coming Soon
Pathological Findings: Coming Soon
Clinical Relevance: Coming Soon
• Roots: C6, C7, C8, T1
• Nerve: Lower subscapular nerve.
• Muscles Innervated: Pectoralis major, pectoralis minor.
• Innervation Route:
• C6, C7, C8, T1 → medial cord → medial pectoral nerve → pectoralis major.
• (C6), C7, C8, T1 → medial cord → medial pectoral nerve → pectoralis minor.
• Note that pectoralis major heads could be cross innervated by the lateral and medial pectoral nerve, hence the variation and range of root origins for these nerves.