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Modular revision stems in total hip arthroplasty.

Richard E Jones¹

¹Orthopedic Specialists, 5920 Forest Park Road, #600, Dallas, TX 75235, USA. ghooker@orthopedicspecialist.com

Clinical Orthopaedics and Related Research

|April 2, 2004

Summary

Modular stems offer significant intraoperative flexibility for revision total hip arthroplasty. These implants allow surgeons to achieve a stable hip center through adaptable component choices.

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Area of Science:

Orthopedic Surgery
Biomedical Engineering

Background:

Revision total hip arthroplasty presents diverse clinical challenges.
Modular stems offer adaptability in implant and host bone integration.

Purpose of the Study:

To review clinical indications for modular stems in revision hip arthroplasty.
To outline advantages, operative techniques, results, and limitations of modular stems.

Main Methods:

Review of modular stem designs: metaphyseal sleeve taper fit and distal stem with proximal stems.
Discussion of variations in distal stem configurations (porous-coated, tapered, splined).
Analysis of intraoperative flexibility in diameter, length, fixation, and orientation.

Main Results:

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Modular stems provide extensive intraoperative choices for component selection.

Enables stable hip center establishment through customizable implant constructs.

No clinical studies currently document superior outcomes compared to one-piece stems.

Conclusions:

Modular stems offer significant intraoperative customization for revision hip arthroplasty.
Flexibility in component selection aids in achieving a stable hip center.
Further clinical studies are needed to validate improved outcomes over traditional stems.