Instruments and method for minimally invasive surgery for total hips

摘要

A minimally invasive surgical procedure for total hip surgery features four unique instruments that facilitate the procedure. A manual Intramedullary Femoral Broach facilitates axial alignment of the subsequent two instruments that attach to it for alignment and stability. The Femoral Neck Resector Guide slides over the proximal portion of the Broach and self centers on the patient's femoral head to determine the height and angular rotation of resection of the femoral neck. The circular ring of the head locator and the cutting arms assure that the system will fit any size femur. The Sizer/Cutter Template is applied to the Femoral Broach from the tip with the tip removed from the intermedullary canal and seats itself firmly against the Femoral Broach raised buttress locking it into place. The Femoral Broach is then is reinserted into the intramedullary canal. When the Sizer/Cutter Template reaches the greater trochanter the Sizer is adjusted to the rotational anteversion of the canal. The handle of the Femoral Broach then is struck with a mallet until the Sizer/Cutter Template is imbedded into the proximal femoral neck intramedullary bone. The right angled Anterior Acetabulum Retractor is elongated to facilitate reaming of the acetabulum through a small anterior incision. A broadened curved proximal portion has angulated teeth that dig into the bone of the superior acetabulum to provide the fulcrum for retraction of the overlying soft tissues.