Pectoralnerverna

Pectoralnerverna, commonly known as the pectoral nerve, refers to a group of nerves that innervate the pectoral muscles in the human body. These nerves are primarily branches of the brachial plexus, a network of nerves originating from the spinal cord in the neck region. The most significant nerves in this group include the medial pectoral nerve, lateral pectoral nerve, and the long thoracic nerve, each serving distinct functions in muscle control and sensation.

The medial pectoral nerve (C8–T1) emerges from the medial cord of the brachial plexus and supplies motor fibers to the pectoralis major and pectoralis minor muscles. It also carries sensory fibers to the joint capsule of the shoulder. The lateral pectoral nerve (C5–C7), originating from the lateral cord, primarily innervates the pectoralis major muscle, contributing to its motor function. The long thoracic nerve (C5–C7), though not exclusively a pectoral nerve, also plays a role in innervating the serratus anterior muscle, which assists in stabilizing the scapula.

Injury or damage to these nerves can result in weakness or paralysis of the pectoral muscles, affecting shoulder movement and stability. Conditions such as brachial plexus injuries, tumors, or compression syndromes may impact pectoral nerve function. Clinical evaluation often involves assessing muscle strength, reflexes, and sensory function, while imaging studies like MRI or electromyography may aid in diagnosis.

Treatment typically focuses on addressing the underlying cause, such as surgical decompression or physical therapy, depending on the severity of the injury. Early intervention is often critical to restoring nerve function and preventing long-term complications.