A New Classification System for Cementless Femoral Stems in Total Hip Arthroplasty.

J Arthroplasty · Mar 2023 · Review

Radaelli M, Buchalter DB, Mont MA, Schwarzkopf R, Hepinstall MS

Department of Orthopedic Surgery, NYU Langone Health, New York

Adult Reconstruction

SUMMARY — THE REDUCTIONThe authors propose a new brand-neutral classification for cementless femoral stems based on geometry, modularity location, and length to standardize reporting and comparisons.
Abstract, as published

BACKGROUND: The growing variety of total hip arthroplasty implants necessitates a standardized, simple, and brand-neutral language to precisely classify femoral components. Although previous classifications have been useful, they need updating to include stems that have current surface treatment technologies, modularity, collar features, and other geometric characteristics.

METHODS: To accomplish this, we propose a new classification system for stems based on 3 distinguishing stem features: (1) geometry, (2) location of modularity, and (3) length.

RESULTS: Our system allows for the easy classification of all currently used stem types.

CONCLUSIONS: One goal of this endeavor is to improve clinical record keeping to facilitate study comparisons as well as literature reviews.

Read the article: PubMed · Publisher (DOI)

Featured in the 2026-08-05 issue.

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