Digital Three-dimensional Imaging Models for Repair of Complex Long Bone Fractures

Inclusion Criteria: * Long bone fractures in the four limbs, such as middle segment of humerus, femur, ulna, radius, tibia and fibula; fractures are not related to the articular surface * Diagnosed with complex long bone fractures via X-ray * Admission within 6 hours after injury Exclusion Criteria: * Pathological fractures with vascular and nerve injuries * Split fractures of the humeral head * Neer IV fractures * Humeral head compression area greater than 40% * Glenohumeral dislocation * Conscious disturbance, cerebral infarction, tumor, serious medical complications, such as heart, lung, kidney failure, severe hypertension, diabetes and blood diseases * History of elbow joint dysfunction or shoulder joint disease * Unwilling to sign the informed consent