Anatomy of the Trochlea and Capitulum of the Humerus Bone ; Location, Structure скачать в хорошем качестве

Anatomy of the Trochlea and Capitulum of the Humerus Bone ; Location, Structure

Anatomy of the Trochlea Location: The trochlea is a spool-shaped structure located at the distal end of the humerus. Articulation: The trochlea articulates with the trochlear notch of the ulna, forming part of the elbow joint. Function: Flexion and Extension: It allows for the hinge-like movements of the elbow, enabling flexion and extension of the forearm. Structure: The trochlea is medial to the capitulum and extends further distally, providing a smooth surface for articulation with the ulna. It is covered by articular cartilage to facilitate smooth movement. Anatomy of the Capitulum Location: The capitulum is a rounded, dome-like structure located at the distal end of the humerus, lateral to the trochlea. Articulation: The capitulum articulates with the head of the radius, forming another part of the elbow joint. Function: Flexion, Extension, and Rotation: It allows for both flexion/extension and rotational movements of the forearm. Structure: The capitulum is smaller than the trochlea and provides a smooth, convex surface for articulation with the radius. It is also covered by articular cartilage to ensure smooth movements. Functional Significance The trochlea and capitulum are essential components of the elbow joint, facilitating a wide range of movements, including flexion, extension, and rotation. These structures, along with the surrounding muscles and ligaments, ensure the stability and functionality of the elbow. #Humerus