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In males the clavicle is usually longer and larger than in females. A study measuring 748 males and 252 females saw a difference in collarbone length between age groups 18–20 and 21–25 of about 6 and 5 mm (0.24 and 0.20 in) for males and females respectively. [9] The left clavicle is usually longer and weaker than the right clavicle. [8] [10]
Clavicle fractures occur at 30–64 cases per 100,000 a year and are responsible for 2.6–5.0% of all fractures. [15] This type of fracture occurs more often in males. [ 15 ] About half of all clavicle fractures occur in children under the age of seven and is the most common pediatric fracture.
When the scapula is moved laterally it lies in a sagittal plane with the glenoid cavity facing anteriorly. At this position, the lateral end of the clavicle is rotated anteriorly so that the clavicle lies in a frontal plane. While this slightly closes the angle between the clavicle and the scapula, it also widens the shoulder. [4]: 40
The Mumford procedure, also known as distal clavicle excision or distal clavicle resection, is an orthopedic procedure performed to ameliorate shoulder pain and discomfort by excising the distal (lateral) end of the clavicle.
The distal clavicle is found in 2 orientations, either subacromial or subcoracoid. With the subcoracoid dislocation, the clavicle becomes lodged behind the intact conjoined tendon. The posterior superior AC ligaments, which often remain attached to the acromion, get displaced into the AC interval, making anatomic reduction difficult.
5 Additional images. 6 See also. ... Shoulder joint. Posterior view at left. Anterior view at right. 1. Clavicle, 2 ... Suprascapular and axillary nerves of right ...
The shoulder girdle [5] or pectoral girdle, [6] composed of the clavicle and the scapula, connects the upper limb to the axial skeleton through the sternoclavicular joint (the only joint in the upper limb that directly articulates with the trunk), a ball and socket joint supported by the subclavius muscle which acts as a dynamic ligament. While ...