Do patients care about higher flexion in total knee arthroplasty? A randomized, controlled, double-blinded trial

BMC Musculoskeletal Disorders

Anders Troelsen¹  Gitte Holm¹  Kristian S Otte¹  Henrik Husted¹  Morten G Thomsen¹ 

[1] Department of Orthopedics, University Hospital of Hvidovre, Hvidovre, Denmark

关键词: ROM;    Satisfaction;    Pain;    TKA;    Arthroplasty;    Knee;   

Others  :  1132991
DOI  :  10.1186/1471-2474-14-127

 received in 2013-01-28, accepted in 2013-03-28,  发布年份 2013

【 摘 要 】

Background

Little information exists to support that patients care about flexion beyond what is needed to perform activities of daily living (ADL) after Total knee arthroplasty (TKA). The purpose of this study was to investigate if the achievement of a higher degree of knee flexion after TKA would result in a better patient perceived outcome.

Methods

The study is a randomized, double-blinded, controlled trial in which 36 patients (mean age: 67.2 yrs) undergoing one-stage bilateral TKA randomly received a standard cruciate-retaining (CR) TKA in one knee and a high-flex posterior-stabilized (PS) TKA in the contra lateral knee. At follow-up ROM, satisfaction, pain, “feel” of the knee and the abilities in daily activities were assessed.

Results

At 1-year follow-up we found an expected significantly higher degree of knee flexion of 7° in the high-flex knees (p = 0.001). The high-flex TKA’s showed a mean active flexion of 121°. In both TKA’s the median VAS pain score was 0, the median VAS satisfaction score was 9, and the median VAS score of the patient “feel” of the knee was 9 at 1-year follow-up. Further, there were no significant differences between the knees in the performance of daily activities.

Conclusions

As expected the high-flex TKA showed increased knee flexion, but no significant differences in the patient perceived outcomes were found. This suggests little relevance to the patients of the difference in knee flexion – when flexion is of this magnitude – as pain free ROM and high patient satisfaction were achieved with both TKA’s.

Trial registration

ClinicalTrials.gov: NCT00294528

【 授权许可】

   
2013 Thomsen et al.; licensee BioMed Central Ltd.

【 图 表 】

Figure 1.

Figure 2.

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