olkapäänsä

Olkapäänsä is a Finnish term that translates to "shoulder blade" in English. It refers specifically to the scapula, a flat, triangular bone located on the posterior side of the rib cage. The scapula connects the upper arm bone (humerus) with the collarbone (clavicle) and plays a vital role in shoulder mobility and stability.

The scapula is characterized by several important features, including the spine, acromion process, coracoid process, and glenoid cavity. The spine of the scapula, a prominent ridge running across its posterior surface, divides the bone into supraspinous and infraspinous fossa. The acromion process extends laterally from the spine, forming the highest point of the shoulder and articulating with the clavicle. The coracoid process projects anteriorly and serves as an attachment site for muscles and ligaments. The glenoid cavity is a shallow socket that articulates with the head of the humerus, forming the shoulder joint.

The scapula serves several functions, including anchoring muscles that facilitate shoulder and arm movements such as lifting, rotating, and reaching. It also provides a stable base for arm movement and distributes mechanical forces during upper limb activity.

Injuries or conditions affecting the scapula, such as fractures, dislocations, or muscular strain, can impair shoulder function and require medical attention. Maintaining scapular health through proper posture and exercises is essential for overall upper limb mobility and strength.