tailieunhanh - báo cáo hóa học:" Oxford unicompartmental knee arthroplasty: medial pain and functional outcome in the medium term"

Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí sinh học quốc tế đề tài : Oxford unicompartmental knee arthroplasty: medial pain and functional outcome in the medium term | Edmondson et al. Journal of Orthopaedic Surgery and Research 2011 6 52 http content 6 1 52 JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH RESEARCH ARTICLE Open Access Oxford unicompartmental knee arthroplasty medial pain and functional outcome in the medium term Mark C Edmondson David Isaac Malin Wijeratna Sean Brink Paul Gibb and Paul Skinner Abstract Background In our experience results of the Oxford unicompartmental knee replacement have not been as good as had been expected. A common post operative complaint is of persistent medial knee discomfort it is not clear why this phenomenon occurs and we have attempted to address this in our study. Methods 48 patients were retrospectively identified at a mean of years range 3 to 6 years following consecutive Oxford medial Unicompartmental Knee arthroplasties for varus anteromedial osteoarthritis. The mean age at implantation was 67 years range 57-86 . Of these 48 patients 4 had died 4 had undergone revision of their unicompartmental knee replacements and 2 had been lost to follow up leaving 38 patients with 40 replaced knees available for analysis using the new Oxford Knee Score questionnaire. During assessment patients were asked specifically whether or not they still experienced medial knee discomfort or pain. Results The mean Oxford score was only range 16 to 48 and 22 of the 40 knees were uncomfortable or painful medially. The accuracy of component positioning was recorded using standard post operative xrays by summing the angulation or displacement of each component in two planes from the ideal position according to the Oxford knee system radiographic criteria . No correlation was demonstrated between the radiographic scores and the Oxford scores or with the presence or absence of medial knee discomfort or pain. Conclusion In our hands the functional outcome following Oxford Unicompartmental knee replacement was variable with a high incidence of medial knee discomfort which did not .