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Minerva Ortopedica e Traumatologica 2012 June;63(3):177-84


language: English

Evaluation of kneeling ability after total knee replacement in patients with osteoarthritis of the knee

Mardani Kivi M. 1, Karimi Mobarakeh M. 2, Hashemi Motlagh K. 3, Saheb Ekhtiari K. 3

1 Orthopedic Department, Guilan University of Medical Sciences, Poursina Hospital, Rasht, Iran; 2 Orthopedic Department, Bahonar Hospital, Kerman University of Medical Sciences, Kerman, Iran; 3 Orthopedic Department, Orthopedic Research Center, Guilan University of Medical Sciences, Rasht, Iran


Aim. The ability to kneel plays a crucial role in the daily events. The lack of literature addressing the patients concerns regarding the capacity, to which they will be able to function post-operatively, motivated us to investigate this issue further.
Methods. In this cross-sectional longitudinal study, all patients with knee osteoarthritis whom had total knee arthroplasty (TKA) were evaluated for eligibility from the years 2007-2010. All procedures using a midline skin incision followed by medial parapatellar arthrotomy without re-surfacing of the patella and with PCL substituting prostheses. Knee Society Score (KSS), Functional Knee Score (FKS), VAS, and kneeling ability, were evaluated, preoperatively, 1-year postoperative, and again during final follow-up. Statistical analysis was interpreted using SPSS software.
Results. Of 114 cases, 69 were female (60.5%), 45 were male (39.5%), with a mean age of 67.9±6.2 years (52 to 81) and mean follow-up range of 26.7±2.4 months (14 to 44). VAS, KSS and FKS were significantly higher at both 1-year and long-term follow-up than those taken before surgery (P<0.0001). Before surgery 76 patients (66.7%) could not kneel, out of which 59 patients (77.6%) reported this inability because of reasons relating to the knee. Of these, 42 cases (71.2%) found it possible to kneel again without pain or discomfort. With regards to preoperative kneeling ability versus postoperative, there is a statistically significant positive relationship between TKA and regaining the ability to kneel (P<0.0001).
Conclusion. It seems that the resultant decreased pain and increased function in knee flexion leads to strengthening of kneeling ability.

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