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Humerus fracture icd 108/9/2023 ![]() ![]() It also provides sensation at the skin overlying the shoulder. The axillary nerve courses inferior to the shoulder joint and innervates the deltoid and teres minor muscles. The anterior and posterior humeral circumflex arteries branch off of the axillary artery to provide the majority of the blood supply to the proximal humerus. The greater and lesser tuberosities are bony landmarks of the proximal humerus and serve as attachment sites for musculature. It as an extremely mobile joint that is stabilized by surrounding soft tissues such as the joint capsule, muscles, and ligaments. The shoulder joint consists of the glenoid cavity of the scapula and the head of the humerus. Pathophysiology Īnterior and posterior views of the proximal humerus with labeled bony landmarks and muscle insertion sites. Osteoporosis increases the risk of proximal humerus fractures. People with increased risk of falls are more likely to have a proximal humerus fracture, as this is also the most common mechanism of injury. Older adults more commonly experience proximal humerus fractures after a fall from standing height. Young adults without risk factors usually require significant trauma, such as in the setting of a motor vehicle collision. Symptoms from poor blood circulation in the arm is uncommon due to collateral circulation in the arm. Numbness over the outside part of the upper arm and deltoid muscle weakness may indicate axillary nerve injury. Deformity may be present in severe fractures, however, musculature may cause absence of deformity on inspection. Typical signs and symptoms include pain, swelling, bruising, and limited range of motion at the shoulder. In this age group they are the third most common fractures after hip and Colles fractures. This appears appropriate in many cases even when the fragments are separated. Treatment is generally with an arm sling for a brief period of time followed by specific exercises. A number of classification systems exist. Diagnosis is generally based on X-rays or CT scan. Risk factors include osteoporosis and diabetes. The cause is generally a fall onto the arm or direct trauma to the arm. Complications may include axillary nerve or axillary artery injury. Symptoms include pain, swelling, and a decreased ability to move the shoulder. Pain, swelling, decreased ability to move the shoulder įall onto the arm, direct trauma to the arm Īrm sling, specific exercises, surgery Ī proximal humerus fracture is a break of the upper part of the bone of the arm ( humerus). Multi-fragmented fracture of the proximal humerus with involvement of the greater tuberosity Medical condition Proximal humerus fracture ![]()
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