Arthroscopic Debridement and Lavage for Osteoarthritis of the Knee: Results From a Low-Resource Setting.

Introduction Osteoarthritis of the knee is a highly prevalent disease globally, causing strain on healthcare resources and leading to a reduced quality of life. There are many treatments proposed for this condition, from conservative measures like analgesics and physiotherapy to surgical options like arthroscopy and total knee arthroplasty (TKA). Arthroscopic debridement and lavage provide significant improvement in a cohort of patients with particular features and can be a temporizing measure before TKA. This study aimed to investigate the results of this procedure, in a case series in the short-term and mid-term, in a low-resource setting. Methods This was a case series of 20 patients, who presented with clinical and radiographic features of mild to moderate (Kellgren-Lawrence grades I-III) primary osteoarthritis of the knee. Arthroscopic debridement and lavage were performed and the Knee Society Score (KSS) was recorded pre-operatively and post-operatively in the short and mid-term at one month, three months, and twelve months. Statistical analyses was done for correlation, with different variables such as the presence of meniscal pathology, loose bodies, grade of osteoarthritis, malalignment, and body mass index (BMI). Results  The KSS improved at one month, three months, and twelve months for all the patients. The improvement in the KSS scores was associated with varus malalignment of less than 10 degrees, a BMI of less than 25, and the presence of loose bodies. There were no adverse events or complications from this study. Conclusions  There was a significant improvement in a patient cohort with malalignment of less than 10 degrees, BMI of less than 25, meniscal pathology, and loose bodies. We can therefore recommend arthroscopic debridement and lavage as a temporizing measure before TKA in this particular cohort.