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Abstract A clavicle fracture is common traumatic injury that comprises about 45% of shoulder girdle injuries and 5% of skeletal injuries. In most cases, the direct hit occurs from the lateral side towards the medial side of the bone. The lateral or acromial end of the bone is flattened and articulates with the medial side of the acromion, whereas the medial or sternal end is enlarged and articulates with the clavicular notch of the manubrium sterni and the first costal cartilage. The shaft is gently curved and in shape being convex forwards in its medial two-thirds and concave forwards in its lateral third. The subclavian vein runs directly below the subclavius muscle and above the first rib. More posterior lies the subclavian artery and the brachial plexus, separated from the vein and clavicle by additional layer of the scalenus anterior muscle medially. The clavicle contributes significantly to the power and stability of the arm and the shoulder girdle, plays an important role in range of motion of the arm, acts as a bony framework for muscle origin and insertion, provides skeletal protection for adjacent neurovascular structures and the superior aspect of the lung, aids in respiration and gives a cosmetic appearance to the shoulder. Fractures can occur at any part of the clavicle. However, the vast majority (69- 82%) occur in the midshaft, at or near the junction of the middle and outer third. This is due to two factors: firstly, this is the thinnest part of the bone, and secondly, it is the only part of the bone not reinforced by attached musculature and ligaments. Complications of clavicular fractures include skin or soft tissue compromise, neurovascular injury, refracture, arthritis in the acromio-clavicular or sterno-clavicular joints, mal-union and non-union. A precontoured clavicle plate is a plating system that is anatomically precontoured which assists in restoring the original structure of the patient’s anatomy with little or no bending of the plate by the surgeon at the time of surgery. Avoiding the need to bend a precontoured clavicle plate saves valuable operating room time. The recent introduction of anatomically contoured clavicle plates may reduce the need for hardware removal. The advantages with these plates include strong fixation due to locking between the screw and plate, and blood supply preservation due to minimal contact between plate and cortical bone. When LCPs are used to treat clavicle midshaft fractures, the risks of injury to the subclavicular artery or brachial plexus can be reduced because fixation can be achieved without the tip of the screw reaching the opposite bone cortex and periosteal stripping can be minimized to promote rapid union. It is believed that the surgery time can be reduced using LCPs because accurate plate contouring is not necessary and periosteal stripping could be minimized using self-tapping screws. Complications of plate fixation include infection, wound dehiscence, keloid formation, and refracture after fixation. The aim of this work was to study the results of open reduction and internal fixation in the treatment of displaced fractures of the middle third of the clavicle by Summary |