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Proper ligaments of the scapula

The proper ligaments of the scapula are the
- Coraco-acromial
- Transverse (Coracoid).

The Coraco-acromial Ligament is a broad, thin, and flat band, of a triangular shape, extended transversely across the upper part of the shoulder-joint, between the coracoid process and the acromion. It is attached by its apex to the summit of the acromion just in front of the articular surface for the clavicle, and by its broad base to the whole length of the outer border of the coracoid process. Its posterior fibres are directed obliquely backwards and outwards, its anterior fibres transversely. This ligament completes the vault formed by the acromion and coracoid processes for the protection of the head of the humerus. It is in relation, above, with the clavicle and under surface of the deltoid; below, with the tendon of the Supra-spinatus muscle, a bursa being interposed. Its anterior border is continuous with a dense cellular lamina that passes beneath the deltoid upon the tendons of the Supra- and Infra-spinati muscles.

The Transverse or Coracoid Ligament, is a thin and flat fasciculus, narrower at the middle than at the extremities, attached by one end to the base of the cora-coid process, and by the other, to the inner extremity of the scapular notch, which it converts into a foramen. The supra-scapular nerve passes through this foramen, its accompanying vessels above it.















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