Modular femoral stem removal during total hip arthroplasty using a universal modular stem extractor

Area of Science:

• Orthopedic surgery
• Biomedical engineering
• Prosthetics and implants

Background:

• Revision total hip arthroplasty (THA) often presents challenges with modular femoral stem removal.
• Difficulties in prosthesis extraction can complicate surgical procedures and increase operative time.

Purpose of the Study:

• To introduce a novel universal modular stem extractor designed for THA revision.
• To evaluate the efficacy of this new device in facilitating femoral stem removal.

Main Methods:

• Development of a universal modular stem extractor with a secure taper attachment.
• Application of tensile forces using a five-pound slaphammer for extraction.
• Clinical assessment of the device during revision THA procedures.

Main Results:

• The universal modular stem extractor achieved secure attachment to the femoral stem taper.
• The device successfully applied tensile forces for prosthesis removal.
• Clinical use demonstrated uncomplicated removal of modular femoral stems.

Conclusions:

• The developed universal modular stem extractor is effective for challenging femoral prosthesis removal in revision THA.
• This device simplifies a difficult aspect of hip revision surgery.
• The extractor offers a reliable solution for surgeons encountering resistant modular stems.