Questionnaire on the perceptions of patients about total knee replacement

Abstract

We have developed a 12-item questionnaire for patients having a total knee replacement (TKR). We made a prospective study of 117 patients before operation and at follow-up six months later, asking them to complete the new questionnaire and the form SF36. Some also filled in the Stanford Health Assessment Questionnaire (HAQ). An orthopaedic surgeon completed the American Knee Society (AKS) clinical score.The single score derived from the new questionnaire had high internal consistency, and its reproducibility, examined by test-retest reliability, was found to be satisfactory. Its validity was established by obtaining significant correlations in the expected direction with the AKS scores and the relevant parts of the SF36 and HAQ. Sensitivity to change was assessed by analysing the differences between the preoperative scores and those at follow-up.We also compared change in scores with the patients' retrospective judgement of change in their condition. The effect size for the new questionnaire compared favourably with those for the relevant parts of the SF36. The change scores for the new knee questionnaire were significantly greater (p < 0.0001) for patients who reported the most improvement in their condition.The new questionnaire provides a measure of outcome for TKR that is short, practical, reliable, valid and sensitive to clinically important changes over time.

Unicompartmental knee arthroplasty in patients with full versus partial thickness cartilage loss (PTCL): equal in clinical outcome but with higher reoperation rate for patients with PTCL

“…At a mean followup of 3.9 years (SD 1.6) the patients were assessed for clinical and functional outcome. Assessment for each patient included complete physical examination of the knee as well as documentation of the Oxford Knee Score (OKS) [7] and the American Knee Society (AKS) Score [8]. The Oxford Knee Score was used in the modified form reaching from 0 to 48 with 48 as the best result as proposed by Murray et al [9].…”

Bridging knee arthrodesis for limb salvage using an intramedullary cemented nail: a retrospective outcome analysis of a case series

“…If the patient had deceased in the meantime, the last follow-up from the patient's records was obtained. Hence, the patients were asked to complete the Short Form-36 (SF-36) health survey [3] and the Oxford 12-item knee questionnaire [9]. The SF-36 is a frequently used questionnaire, used in various areas of medical care, assessing patient's general health, quality of life, pain and disability.…”

“…The SF-36 consists of 8 dimensions, whereas higher scores are associated with better quality of life and state of health [11]. Oxford knee score (OKS), consisting of 12 questions ranging from 12 (least difficulties) to 60 (most difficulties), was initially developed by Dawson et al [9] to provide a measure of outcome for patients following TKR. The OKS has previously been used to evaluate outcome after knee arthrodesis [10].…”

Primary modular total knee replacement in severe and unstable osteoarthritis. Predictive factors for failure

“…At the end of the follow-up, a survey on all patients was conducted in order to assess their clinical and functional status and their health-related quality of life (HRQoL): Knee Society Score (KSS)-both clinical and functional parts [18] and the Oxford Knee Score (OKS)-this HRQoL questionnaire was completed by the patient [19].…”