What is the insertion point of the trapezius muscle?

The insertion point of the trapezius muscle is indeed the lateral clavicle. The trapezius has a broad origin that includes the occipital bone of the skull, the nuchal ligament, and the spinous processes of the thoracic vertebrae. However, it inserts at multiple points, primarily including the lateral aspect of the clavicle, the acromion, and the spine of the scapula, contributing to its functionality in moving and stabilizing the shoulder girdle.

Understanding the insertion points is crucial because they determine how the muscle operates. The trapezius muscle is responsible for various movements, including elevation, retraction, and rotation of the scapula, which are essential for upper limb movement. Correct identification of the insertion point aids in both anatomical understanding and practical applications in sports massage and rehabilitation.

While the spine of the scapula and the medial border of the scapula are indeed related to the muscle, they do not represent the primary insertion location for the trapezius muscle, which contributes to the synergistic actions observed in shoulder movements. The bicipital groove, on the other hand, is unrelated to the trapezius muscle's anatomy.