Improved knee flexion following high-flexion total knee arthroplasty

Journal of Orthopaedic Surgery and Research

Li Fang¹  Kathryn E Brewer¹  Mitchell D Eggers¹  David R Lionberger² 

[1] Foundation for Southwest Orthopedic Research, 6560 Fannin Street, Suite 1020, Houston, TX, 77030, USA;Southwest Orthopedic Group, L.L.P., 6560 Fannin Street, Suite 1016, Houston, TX, 77030, USA

关键词: Range of motion;    Body mass index;    Total knee arthroplasty;    Gender-specific high-flexion knee prosthesis;    Osteoarthritis;   

Others  :  817917
DOI  :  10.1186/1749-799X-7-22

 received in 2010-03-31, accepted in 2012-05-02,  发布年份 2012

【 摘 要 】

Background

The application of new techniques and materials in total knee arthroplasty (TKA) continue to be a primary focus in orthopedic surgery. The primary aim of the present study is to evaluate post TKA total range of motion (ROM) among a group of patients who received a gender specific high-flexion design modification implant compared to a control group of patients who received non-gender specific implants.

Methods and results

The control group was comprised of 39 TKAs that were recruited pre-operatively and received the non-gender specific implant while the study group consisted of 39 TKAs who received gender specific implants. The study group yielded an improvement in mean post-operative ROM of 21° at 12 months, whereas the mean improvement in ROM among the control group was 11°. Thus, the study group had a 10° increased ROM improvement (91%) over the control group (p = 0.00060). In addition, 100% of the subjects with gender specific high-flexion implants achieved greater or equal ROM post-operatively compared to 82% for the control cohort. Lastly, women who exhibited greater pre-operative ROM and lower body mass index (BMI) were found to benefit the most with the gender specific prosthesis.

Conclusion

Our study demonstrates that among subjects with a normal BMI, the gender specific high-flexion knee implant is associated with increased ROM as compared to the non-gender specific non-high-flexion implant designs.

【 授权许可】

   
2012 Lionberger et al.; licensee BioMed Central Ltd.

【 图 表 】

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