Clavicle Anatomy | Superior View | Acromial and Sternal End | Conoid Tubercle скачать в хорошем качестве

Clavicle Anatomy | Superior View | Acromial and Sternal End | Conoid Tubercle

In this anatomy lecture, we will learn about the clavicle, also known as the collarbone, which is a long bone that connects the scapula (shoulder blade) to the sternum (breastbone). It is part of the pectoral girdle, which is the bony structure that supports the arms. The clavicle is a curved bone that has two ends and a middle section. The medial end of the clavicle is the end that connects to the sternum, while the lateral end connects to the acromion process of the scapula. The middle section of the clavicle is the longest and most curved part of the bone. ▬ 📃 Clavicle Anatomy Superior View ▬▬▬▬▬▬▬▬▬▬ On a superior view of the clavicle, the bone appears as an elongated, slightly curved structure with a triangular cross-section. Some of the key features visible on a superior view of the clavicle include: 👉 Sternal End The medial end of the clavicle articulates with the sternum. It appears as a flat oval surface on the superior view. 👉 Acromial End The lateral end of the clavicle articulates with the acromion process of the scapula. It appears as a flattened, oval-shaped surface on the superior view. 👉 Conoid Tubercle A small bump on the undersurface of the clavicle, near the acromial end, which serves as an attachment site for the conoid ligament. It appears as a small, raised bump on the superior view. 👉 Trapezoid Line A ridge on the upper surface of the clavicle, near the acromial end, serves as an attachment site for the trapezoid ligament. It appears as a raised line running parallel to the length of the clavicle. Conoid Sulcus A shallow groove on the undersurface of the clavicle, near the acromial end, accommodates the conoid ligament. It appears as a shallow, elongated depression from the superior view. ▬ 📜 Clavicle Anatomy Inferior View ▬▬▬▬▬▬▬▬▬▬ Subclavian groove: A groove on the underside of the clavicle, near the sternal end, which provides a passageway for the subclavian vein and artery. 👉 Costal Tuberosity A roughened, elevated area on the undersurface of the clavicle, near the sternal end, which serves as an attachment site for the costoclavicular ligament. 👉 Conoid Tubercle A small, pointed projection on the undersurface of the clavicle, near the acromial end, which serves as an attachment site for the conoid ligament. 👉 Subclavian Groove A shallow groove on the undersurface of the clavicle, near the sternal end, provides a passageway for the subclavian vein and artery. 👉 Deltoid Tuberosity A roughened, elevated area on the upper surface of the clavicle, near the acromial end, which serves as an attachment site for the deltoid muscle. ▬ 📃 Clavicle Anatomy Side View ▬▬▬▬▬▬▬▬▬▬ The visible features are more or less like the superior view with the only difference being. 👉 Conoid Process A pointed projection on the upper surface of the clavicle, near the acromial end, which serves as an attachment site for the conoid ligament. 👉 Curves The clavicle has two distinct curves, with the sternal end curving slightly forward and the acromial end curving slightly backward. These curves help to absorb shock and distribute weight across the shoulder girdle. ▬ 📜 Clavicle Anatomy Muscle Attachments ▬▬▬▬▬▬▬▬▬▬ The clavicle is an important site for the attachment of several muscles that help to move the shoulder and arm. Some of the key muscle attachments on the clavicle include: 💪Sternocleidomastoid muscle This muscle attaches to the medial end of the clavicle and helps to flex the neck. 💪 Subclavius muscle This small muscle attaches to the undersurface of the clavicle, near the sternal end, and helps to depress the shoulder. 💪 Pectoralis major muscle This muscle attaches to the medial half of the clavicle and helps to adduct and flex the arm. 💪 Trapezius muscle This muscle attaches to the lateral third of the clavicle and helps to elevate and retract the shoulder blade. 💪 Deltoid muscle This muscle attaches to the lateral third of the clavicle and helps to abduct and flex the arm. 💪 Subclavius arter This artery runs along the undersurface of the clavicle and provides blood supply to the arm and shoulder. 💪 Costoclavicular ligament This ligament attaches to the undersurface of the clavicle, near the sternal end, and helps to stabilize the shoulder girdle. ▬ 📃 Clinical Aspects of Clavicle Anatomy ▬▬▬▬▬▬▬▬▬▬ The clavicle is an important bone in the human body, and its clinical anatomy is significant in several ways. Here are some clinical aspects of clavicle anatomy: 👉 Fractures Clavicle fractures are common and usually occur because of falls or sports injuries. These fractures can be painful and limit shoulder movement, but most heal well with immobilization and physical therapy. 👉 Anatomical Variations The clavicle may have anatomical variations, such as different degrees of curvature or variations in size and shape. These variations may be important to consider in surgical procedures or when interpreting medical imaging studies.