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Surgical Techniques   |    
Distal Femoral Varus Osteotomy for Osteoarthritis of the Knee
Jun-Wen Wang, MD1; Chia-Chen Hsu, MD1
1 Department of Orthopaedic Surgery, Chang Gung Memorial Hospital at Kaohsiung, 123, Ta Pei Road, Niao Sung Hsiang, Kaohsiung, Taiwan, Republic of China. E-mail address for J.-W. Wang: lee415@adm.cgmh.org.tw
View Disclosures and Other Information
The original scientific article in which the surgical technique was presented was published in JBJS Vol. 87-A, pp. 127-133, January 2005
The authors did not receive grants or outside funding in support of their research for or preparation of this manuscript. They did not receive payments or other benefits or a commitment or agreement to provide such benefits from a commercial entity. No commercial entity paid or directed, or agreed to pay or direct, any benefits to any research fund, foundation, educational institution, or other charitable or nonprofit organization with which the authors are affiliated or associated.
Investigation performed at the Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Kaohsiung, Taiwan, Republic of China

The Journal of Bone and Joint Surgery, Incorporated
J Bone Joint Surg Am, 2006 Mar 01;88(1 suppl 1):100-108. doi: 10.2106/JBJS.E.00827
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Abstract

BACKGROUND: Distal femoral varus osteotomy is a procedure that is performed for the treatment of lateralcompartment osteoarthritis of the knee as well as for correction of the associated valgus deformity. However, its role remains controversial and its efficacy in the treatment of associated patellofemoral arthritis has not been well studied. The purpose of the present study was to evaluate the outcome after distal femoral osteotomy performed for the treatment of painful genu valgum and to assess the influence of patellofemoral arthritis on the results.

METHODS: Thirty patients (thirty knees) were managed with distal femoral varus osteotomy for the treatment of noninflammatory lateralcompartment arthritis of the knee associated with a valgus deformity. Twelve knees had isolated lateral-compartment arthritis, ten had mild-to-moderate degenerative changes in the other two compartments, and eight knees had severe patellofemoral arthritis in addition to lateral-compartment disease. The osteotomy site was fixed with a 90° blade-plate. After a mean duration of follow-up of ninety-nine months, all patients were evaluated with use of the Hospital for Special Surgery knee-rating system and a physical examination.

RESULTS: At the time of the most recent follow-up, twenty-five patients (83%) had a satisfactory result and two had a fair result according to the Hospital for Special Surgery rating system. The remaining three patients had had a conversion to a total knee arthroplasty. With conversion to total knee arthroplasty as the end point, the cumulative ten-year survival rate for all patients was 87% (95% confidence interval, 69% to 100%). Improvement in patellar tracking, which persisted at the time of the latest follow-up, was observed in seven of the eight knees with associated severe patellofemoral arthritis.

CONCLUSIONS: Distal femoral varus osteotomy with blade-plate fixation can be a reliable procedure for the treatment of lateral-compartment osteoarthritis of the knee associated with valgus deformity. The result of the osteotomy does not appear to be affected by the presence of severe patellofemoral arthritis.

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    Accreditation Statement
    These activities have been planned and implemented in accordance with the Essential Areas and policies of the Accreditation Council for Continuing Medical Education (ACCME) through the joint sponsorship of the American Academy of Orthopaedic Surgeons and The Journal of Bone and Joint Surgery, Inc. The American Academy of Orthopaedic Surgeons is accredited by the ACCME to provide continuing medical education for physicians.
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