| Unicompartmental knee arthroplasty. Clinical experience at 6- to 10-year followup. | |
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MedLine Citation:
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PMID: 10546598 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Sixty-two consecutive cemented modular unicompartmental knee arthroplasties in 51 patients were studied prospectively. At surgery, the other compartments had at most Grade 2 chondromalacia. The average age of the patients at arthroplasty was 68 years (range, 51-84 years). One patient was lost to followup and 10 died with less than 6 years followup. The average followup of the remaining 51 knees was 7.5 years (range, 6-10 years). The preoperative Hospital for Special Surgery knee score of 55 points (range, 30-79 points) improved to 92 points (range, 60-100 points) at followup; 78% (40 knees) had excellent and 20% (10 knees) had good results. The mean range of motion at followup was 120 degrees with 26 knees (51%) having range of motion greater than 120 degrees. One patient underwent revision surgery for retained cement, one patient underwent knee manipulation, and one patient underwent revision surgery at 7 years for opposite compartment degeneration and pain. Radiographically, 26 knees (51%) had at least one partial radiolucency. There were no complete femoral radiolucencies, but there were three complete tibial radiolucencies, all less than 2 mm. No component was loose as seen on radiographs. At final followup, five of the opposite compartments (10%) and three of the patellofemoral joints (6%) had some progressive radiographic joint space loss; this was less than a 25% loss in all but one knee component that was revised. At 6- to 10-years followup, cemented unicompartmental knee arthroplasty yielded excellent clinical and radiographic results. The 10-year survival using radiographic loosening or revision as the end point was 98%. Using stringent selection criteria, unicompartmental knee replacement can yield excellent results and represents a superb alternative to total knee replacement. |
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Authors:
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R A Berger; D D Nedeff; R M Barden; M M Sheinkop; J J Jacobs; A G Rosenberg; J O Galante |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Clinical orthopaedics and related research Volume: - ISSN: 0009-921X ISO Abbreviation: Clin. Orthop. Relat. Res. Publication Date: 1999 Oct |
Date Detail:
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Created Date: 1999-11-18 Completed Date: 1999-11-18 Revised Date: 2005-03-03 |
Medline Journal Info:
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Nlm Unique ID: 0075674 Medline TA: Clin Orthop Relat Res Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 50-60 Citation Subset: AIM; IM |
Affiliation:
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Department of Orthopedic Surgery, Rush-Presbyterian-St. Luke's Medical Center, Chicago, Illinois, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Aged, 80 and over Arthroplasty, Replacement, Knee* Cementation Female Follow-Up Studies Humans Knee Joint / physiology, radiography Knee Prosthesis* Male Middle Aged Prospective Studies Prosthesis Failure Range of Motion, Articular Reoperation Survival Analysis |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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