Oct 30, 2023 · This muscle is involved in adduction, internal rotation, flexion and extension of the arm at the shoulder joint, as well as drawing of the scapula anteroinferiorly at the scapulothoracic joint. Additionally, the lateral pectoral nerve sends a communicating branch to the medial

Apr 5, 2023 · Due to a communicating branch to the medial pectoral nerve some lateral pectoral nerve fibers pass to and innervate the pectoralis minor. The lateral pectoral nerve also carries nociceptive and proprioceptive fibers. Variant anatomy. The lateral pectoral may have two distinct origins from the anterior divisions of the superior and middle trunks.

Jul 30, 2023 · The lateral pectoral nerve innervates the clavicular head of the pectoralis major. The medial pectoral nerve innervates the pectoralis minor and the sternocostal head of the pectoralis major. The medial cord also supplies the sensory medial cutaneous nerve of the arm (C8, T1) and the medial cutaneous nerve of the forearm.

Nov 3, 2023 · The acromioclavicular joint is innervated by the lateral pectoral and suprascapular nerves. The lateral pectoral nerve is a branch of the lateral cord of brachial plexus, while the suprascapular nerves originate from the superior trunk of the plexus. Blood supply to the AC joint comes from the thoracoacromial and suprascapular arteries.

Supra-scapular sensory branches coursed laterally from the spinoglenoid notch then toward the glenohumeral joint capsule posteriorly. Axillary nerve articular branches innervated the posterolateral head of the humerus and shoulder capsule in the same 16 (100%) of 16 shoulders.

Jul 23, 2020 · Current literature supports the presence of a common sensory innervation pattern for the human shoulder joint. Anatomic studies have demonstrated that the most common parent nerves supplying ABs to the shoulder joint are the suprascapular, lateral …

Jan 24, 2022 · Both pectoral muscles have dual nerve supply from lateral and medial pectoral nerves. Upper clavicular part of PM muscle is supplied by LPN with a root value of C5, C6, and C7. The lower sternocostal part is supplied by medial pectoral nerve (C8 and T1).

Supine positioning provides access to the lateral pectoral nerve and upper nerve to the subscapularis, while lateral decubitus positioning can be used when necessitating blocks to both anterior and posterior nerves.

Radial nerve Median nerve Plexus Lateral pectoral nerve (C5, 6, 7) Suprascapular nerve (C5, 6) TO subclavius muscle (C5, 6) tra Dorsal scapular nerve (C5) TO phrenic nerve 1st rib Contribution from C4 Dorsal ramus Contribution from T 2 To longus colli and scalene muscles 1st intercostal nerve Long thoracic nerve (C5, 6, 7) 00

Jan 20, 2025 · The lateral pectoral nerve is a peripheral nerve that arises from the lateral cord of the brachial plexus, typically from the C5, C6, and C7 nerve roots. It is primarily involved in the motor innervation of the pectoral muscles, particularly the pectoralis major.