Brachial plexus neuropraxia is a rare complication of the fractured clavicle although neurovascular injury following clavicular fracture is significant problem. The clavicular midshaft fracture can almost always be treated by conservative methods with a high rate of healing. There are some operative indication for clavicular fracture, which contains severe angulation or comminution of clavicle fracture, neurovascular compromise that is progressive, open fracture and closed method of immobilization are immpossible. Nearly all fracture was healed without complications such as infection, neurovascular compromise and nonunion. The authors describe two cases of brachial plexus injury secondary to exuberant callus formation of the clavicular fracture.