Effects of design changes on cemented tapered femoral stem fixation

Authors: Middleton, R.G., Howie, D.W., Costi, K. and Sharpe, P.

Journal: Clinical Orthopaedics and Related Research

Volume: 355

Pages: 47-56

eISSN: 1528-1132

ISSN: 0009-921X

DOI: 10.1097/00003086-199810000-00006

Abstract:

The effects of matte finish and modularity on loosening of tapered stems using the same cementing technique were studied prospectively. In 80 patients, 82 cemented Exeter primary stems were implanted at total hip revision by one surgeon using the same surgical and cementing technique throughout the series. The polished stems behaved differently than the matte surfaced stems behaved. Polished stems subsided in the cement mantle an average of 1 mm at 2 years after implantation, but without subsequent loosening of stems at as long as 12 years after implantation. Matte surfaced stems with metal centralizers had a higher loosening rate, and loss of fixation at the prosthesis to cement interface was identified as an early sign of loosening of these stems. At a mean 6-year followup, there were no revisions nor was there radiographic evidence of loosening of the polished modular stems. It is concluded that matte finish results in increased loosening of tapered stems but the introduction of modularity did not.

Source: Scopus

Effects of design changes on cemented tapered femoral stem fixation.

Authors: Middleton, R.G., Howie, D.W., Costi, K. and Sharpe, P.

Journal: Clin Orthop Relat Res

Issue: 355

Pages: 47-56

ISSN: 0009-921X

DOI: 10.1097/00003086-199810000-00006

Abstract:

The effects of matte finish and modularity on loosening of tapered stems using the same cementing technique were studied prospectively. In 80 patients, 82 cemented Exeter primary stems were implanted at total hip revision by one surgeon using the same surgical and cementing technique throughout the series. The polished stems behaved differently than the matte surfaced stems behaved. Polished stems subsided in the cement mantle an average of 1 mm at 2 years after implantation, but without subsequent loosening of stems at as long as 12 years after implantation. Matte surfaced stems with metal centralizers had a higher loosening rate, and loss of fixation at the prosthesis to cement interface was identified as an early sign of loosening of these stems. At a mean 6-year followup, there were no revisions nor was there radiographic evidence of loosening of the polished modular stems. It is concluded that matte finish results in increased loosening of tapered stems but the introduction of modularity did not.

Source: PubMed

Effects of design changes on cemented tapered femoral stem fixation

Authors: Middleton, R.G., Howie, D.W., Costi, K. and Sharpe, P.

Journal: CLINICAL ORTHOPAEDICS AND RELATED RESEARCH

Issue: 355

Pages: 47-56

eISSN: 1528-1132

ISSN: 0009-921X

Source: Web of Science (Lite)

Effects of design changes on cemented tapered femoral stem fixation.

Authors: Middleton, R.G., Howie, D.W., Costi, K. and Sharpe, P.

Journal: Clinical orthopaedics and related research

Issue: 355

Pages: 47-56

eISSN: 1528-1132

ISSN: 0009-921X

DOI: 10.1097/00003086-199810000-00006

Abstract:

The effects of matte finish and modularity on loosening of tapered stems using the same cementing technique were studied prospectively. In 80 patients, 82 cemented Exeter primary stems were implanted at total hip revision by one surgeon using the same surgical and cementing technique throughout the series. The polished stems behaved differently than the matte surfaced stems behaved. Polished stems subsided in the cement mantle an average of 1 mm at 2 years after implantation, but without subsequent loosening of stems at as long as 12 years after implantation. Matte surfaced stems with metal centralizers had a higher loosening rate, and loss of fixation at the prosthesis to cement interface was identified as an early sign of loosening of these stems. At a mean 6-year followup, there were no revisions nor was there radiographic evidence of loosening of the polished modular stems. It is concluded that matte finish results in increased loosening of tapered stems but the introduction of modularity did not.

Source: Europe PubMed Central