R J Napier1, S O'Brien2, D Bennett2, E Doran2, A Sykes2, J Murray3, D E Beverland2. 1. Outcome Assessment Unit, Musgrave Park Hospital, Belfast, Northern Ireland, United Kingdom. Electronic address: Rjnapier@doctors.org.uk. 2. Outcome Assessment Unit, Musgrave Park Hospital, Belfast, Northern Ireland, United Kingdom. 3. Whitla Medical Building, The Queen's University of Belfast, Belfast, Northern Ireland, United Kingdom.
Abstract
BACKGROUND: Longer operation times, poorer patient outcomes and increased early post-operative complications are reasons cited for not undertaking total knee arthroplasty (TKA) on morbidly obese patients. This study tests the hypothesis that there is no difference in intra-operative parameters between morbidly obese and non-obese patients, and no difference in patient outcome. METHODS: Intra-operative parameters, post-operative complications, patient outcomes and knee range of motion were compared between morbidly obese patients (BMI>40 kg/m2) and individually age and gender matched non-obese patients (BMI<30 kg/m2) undergoing cementless rotating platform TKA. RESULTS: Anaesthetic times and length of hospital stay were not significantly different between the morbidly obese and non-obese patients. Surgical time was significantly greater in morbidly obese patients. Improvements in patient outcomes following TKA were not significantly different between the morbidly obese and non-obese patients at early and short-term follow-up. CONCLUSIONS: In contrast to previous studies, post-operative complication rates within three months of surgery and up to one year post-operatively were not significantly higher for morbidly obese patients. LEVEL OF EVIDENCE: III.
BACKGROUND: Longer operation times, poorer patient outcomes and increased early post-operative complications are reasons cited for not undertaking total knee arthroplasty (TKA) on morbidly obesepatients. This study tests the hypothesis that there is no difference in intra-operative parameters between morbidly obese and non-obesepatients, and no difference in patient outcome. METHODS: Intra-operative parameters, post-operative complications, patient outcomes and knee range of motion were compared between morbidly obesepatients (BMI>40 kg/m2) and individually age and gender matched non-obesepatients (BMI<30 kg/m2) undergoing cementless rotating platform TKA. RESULTS: Anaesthetic times and length of hospital stay were not significantly different between the morbidly obese and non-obesepatients. Surgical time was significantly greater in morbidly obesepatients. Improvements in patient outcomes following TKA were not significantly different between the morbidly obese and non-obesepatients at early and short-term follow-up. CONCLUSIONS: In contrast to previous studies, post-operative complication rates within three months of surgery and up to one year post-operatively were not significantly higher for morbidly obesepatients. LEVEL OF EVIDENCE: III.
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