Bariatric surgery improves knee function and not knee pain in the early postoperative period

Abstract Background Obesity remains the strongest predictor of knee osteoarthritis (OA). Studies have reported improvement in knee pain and function post-bariatric surgery secondary to weight loss and reduced mechanical loading, yet others found increased rates of total knee arthroplasty (TKA) in th...

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Main Authors: Amre Hamdi, Alia T. Albaghdadi, Bayan Ghalimah, Abdullah Alnowiser, Anas Ahmad, Abdulmalik Altaf
Format: Article
Language:English
Published: BMC 2018-04-01
Series:Journal of Orthopaedic Surgery and Research
Subjects:
Online Access:http://link.springer.com/article/10.1186/s13018-018-0803-4
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author Amre Hamdi
Alia T. Albaghdadi
Bayan Ghalimah
Abdullah Alnowiser
Anas Ahmad
Abdulmalik Altaf
author_facet Amre Hamdi
Alia T. Albaghdadi
Bayan Ghalimah
Abdullah Alnowiser
Anas Ahmad
Abdulmalik Altaf
author_sort Amre Hamdi
collection DOAJ
description Abstract Background Obesity remains the strongest predictor of knee osteoarthritis (OA). Studies have reported improvement in knee pain and function post-bariatric surgery secondary to weight loss and reduced mechanical loading, yet others found increased rates of total knee arthroplasty (TKA) in that patient population. To address this controversy, our study aimed to further assess the effect of surgically induced, “rapid” weight loss on knee pain and function. Methods Obese patients with chronic knee pain, who were undergoing bariatric surgery, were enrolled and surveyed preoperatively and 3 months postoperatively. Our outcome measures were knee pain and knee function, assessed by a knee injury and osteoarthritis outcome score (KOOS). The paired t test was used to compare pre- and postoperative KOOS scores. Pearson correlation coefficient was used to test the correlation between change in body mass index (BMI) with knee function, pain, and stiffness. Results A total of 30 patients was included in the study. The mean age was 35 years, with a mean preoperative BMI of 42.8. The mean difference in BMI at 3 months was 8.4 (SD3). There was a significant improvement in KOOS, − 23.2 (± 20) points, p < 0.01, most pronounced in knee function related to sport activities, with a difference of − 22.6 points, p < 0.01. Knee pain scores improved but did not reach statistical significance. Conclusion Surgically induced rapid weight loss significantly improved knee function, particularly related to sports. However, there was no change in knee pain. This may be related to increased high-impact knee exercises and reduced lean mass. Tailored exercise programs for bariatric surgery patients postoperatively, may improve symptoms and decrease the need for knee replacements in the long term.
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spelling doaj.art-adf24f23c8034e368e8c99c90e16dd0a2022-12-22T02:22:08ZengBMCJournal of Orthopaedic Surgery and Research1749-799X2018-04-011311610.1186/s13018-018-0803-4Bariatric surgery improves knee function and not knee pain in the early postoperative periodAmre Hamdi0Alia T. Albaghdadi1Bayan Ghalimah2Abdullah Alnowiser3Anas Ahmad4Abdulmalik Altaf5Department of Orthopedic Surgery, Faculty of Medicine, King Abdulaziz UniversityDepartment of Orthopedic Surgery, Faculty of Medicine, King Abdulaziz UniversityDepartment of Orthopedic Surgery, Faculty of Medicine, King Abdulaziz UniversityFaculty of Medicine, King Abdulaziz UniversityFaculty of Medicine, King Abdulaziz UniversityDepartment of General Surgery, Faculty of Medicine, King Abdulaziz UniversityAbstract Background Obesity remains the strongest predictor of knee osteoarthritis (OA). Studies have reported improvement in knee pain and function post-bariatric surgery secondary to weight loss and reduced mechanical loading, yet others found increased rates of total knee arthroplasty (TKA) in that patient population. To address this controversy, our study aimed to further assess the effect of surgically induced, “rapid” weight loss on knee pain and function. Methods Obese patients with chronic knee pain, who were undergoing bariatric surgery, were enrolled and surveyed preoperatively and 3 months postoperatively. Our outcome measures were knee pain and knee function, assessed by a knee injury and osteoarthritis outcome score (KOOS). The paired t test was used to compare pre- and postoperative KOOS scores. Pearson correlation coefficient was used to test the correlation between change in body mass index (BMI) with knee function, pain, and stiffness. Results A total of 30 patients was included in the study. The mean age was 35 years, with a mean preoperative BMI of 42.8. The mean difference in BMI at 3 months was 8.4 (SD3). There was a significant improvement in KOOS, − 23.2 (± 20) points, p < 0.01, most pronounced in knee function related to sport activities, with a difference of − 22.6 points, p < 0.01. Knee pain scores improved but did not reach statistical significance. Conclusion Surgically induced rapid weight loss significantly improved knee function, particularly related to sports. However, there was no change in knee pain. This may be related to increased high-impact knee exercises and reduced lean mass. Tailored exercise programs for bariatric surgery patients postoperatively, may improve symptoms and decrease the need for knee replacements in the long term.http://link.springer.com/article/10.1186/s13018-018-0803-4Knee painArthritisKnee functionBariatric surgeryRapid weight loss
spellingShingle Amre Hamdi
Alia T. Albaghdadi
Bayan Ghalimah
Abdullah Alnowiser
Anas Ahmad
Abdulmalik Altaf
Bariatric surgery improves knee function and not knee pain in the early postoperative period
Journal of Orthopaedic Surgery and Research
Knee pain
Arthritis
Knee function
Bariatric surgery
Rapid weight loss
title Bariatric surgery improves knee function and not knee pain in the early postoperative period
title_full Bariatric surgery improves knee function and not knee pain in the early postoperative period
title_fullStr Bariatric surgery improves knee function and not knee pain in the early postoperative period
title_full_unstemmed Bariatric surgery improves knee function and not knee pain in the early postoperative period
title_short Bariatric surgery improves knee function and not knee pain in the early postoperative period
title_sort bariatric surgery improves knee function and not knee pain in the early postoperative period
topic Knee pain
Arthritis
Knee function
Bariatric surgery
Rapid weight loss
url http://link.springer.com/article/10.1186/s13018-018-0803-4
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