The Migration Pattern of the Charnley Femoral Stem: a Five-year Follow-up RSA Study in a Well-functioning Patient Group

Overview

Journal J Orthop Traumatol

Specialties Emergency Medicine
Orthopedics

Date 2012 May 12

PMID 22576838

Citations 1

Authors

Kristin Haugan

Otto S Husby

Jomar Klaksvik

Olav A Foss

Affiliations

Soon will be listed here.

Abstract

Background: Implant stability is considered vital to long-time implant survival in total hip arthroplasty (THA), since loose implants are reported to be a major cause of hip revision. There is an association between early implant micromotion and increased risk of revision. More implant-specific data are needed to establish acceptable levels of early implant movement.

Materials And Methods: Thirty-five patients (36 hips) undergoing Charnley THA were followed with repeated clinical, radiographic, and radiostereometric analysis (RSA) over 5 years. Twenty-three patients attended 5 years postoperatively.

Results: The patient group was well functioning based on the radiological and clinical evaluations. The stems constantly moved up to 5 years postoperatively, with subsidence, retroversion, and varus tilt, based on the RSA.

Conclusion: Continuous movement of the Charnley stem was observed up to 5 years postoperatively in a well-functioning patient group. The migration data presented herein could be useful when defining acceptable migration limits for certain types of cemented femoral stems.

Citing Articles

Analysis of migration of the Nanos® short-stem hip implant within two years after surgery.

Budde S, Seehaus F, Schwarze M, Hurschler C, Floerkemeier T, Windhagen H Int Orthop. 2015; 40(8):1607-1614.

PMID: 26404094 DOI: 10.1007/s00264-015-2999-9.

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