tailieunhanh - Báo cáo y học: " Atraumatic patellar prosthesis dislocation with patellar tendon injury following a total knee arthroplasty: a case report"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Atraumatic patellar prosthesis dislocation with patellar tendon injury following a total knee arthroplasty: a case report | Singh et al. Journal of Medical Case Reports 2010 4 11 http content 4 1 11 jAl JOURNALOF medical ÌỤr case REPORTS CASE REPORT Open Access Atraumatic patellar prosthesis dislocation with patellar tendon injury following a total knee arthroplasty a case report Vinay Kumar Singh1 Pankaj Kumar Singh2 Yashwant Singh3 Alka Singh4 Sadaf Javed5 Murad Abdunabi6 Abstract Introduction Total knee arthroplasty is a well-established procedure with gratifying results. There is no consensus in the literature whether to routinely resurface the patella while performing total knee arthroplasty or not. Although an extremely rare occurrence in clinical practice patellar prosthesis dislocation is a possible complication resulting from total knee arthroplasty. Case presentation We report a rare case of atraumatic spontaneous dislocation of patellar prosthesis in a 63-year-old Caucasian man of British origin with patellar tendon injury. The patient was treated successfully through a revision of the patellar component and tendon repair. In two years follow-up the patient is asymptomatic with no sign of loosening of his patellar prosthesis. Conclusions A thorough understanding of knee biomechanics is imperative in performing total knee arthroplasty in order to achieve a better functional outcome and to prevent early prosthetic failure. Introduction Patellar resurfacing in total knee replacement remains a controversial area. It is debated whether the patella should be resurfaced in every case should never be resurfaced or that resurfacing should be done only in certain circumstances 1 . The literature remains divided with plenty of evidence for both resurfacing and not resurfacing the patella as a routine practice. Resurfacing of the patella is associated with significant alteration of patellofemoral biomechanics. Isolated atraumatic dislocation of the p atellar component rarely occurs after total knee arthroplasty TKA and injury to the patellar tendon due to .