Objective. To determine whether a hybrid construct, using a combination of pedicle screws (PSs) and lamina hooks, was equivalent to a PS construct, in a short-segment thoracic spine fixation model.

• 目的:测定在混合固定中；联合使用椎弓根螺钉和椎板钩对短节段胸椎进行固定；与单独使用椎弓根螺钉固定；其固定效果是否等效.