238COMBINED UNICOMPARTMENT KNEE ARTHROPLASTY AND ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION: EFFICACY IN SYMPTOMATIC OSTEOARTHRITIS WITH PREEXISTING ACL DEFICIENCYIn this retrospective analysis, we investigated the efficacy of combined unicompartment knee arthroplasty and anterior cruciate ligament (ACL) reconstruction in nine patients with symptomatic osteoarthritis and pre-existing ACL deficiency accompanied by functional instability. The study spanned from April 2002 to June 2005. Prior to surgery, the average arc of flexion was 119° (ranging from 95° to 135°), which improved to 125° (ranging from 105° to 140°) postoperatively. Throughout the follow-up period, there were no indications of instability observed in any of the patients, and none required further surgical intervention. These findings suggest that the combined procedure effectively addressed both instability and pain in this patient cohortBhukya@gmail.comResearch922019Symptomatic osteoarthritis, Anterior cruciate ligament deficiency,Unicompartment knee arthroplasty, ACL reconstruction, Functional instability.Dr Muralidhar S,Dr Bhukya GopilalAssistant Professor, Department of Orthopaedics, Katuri medical college & Hospital, Chinakondrupadu, Guntur, India,Assistant Professor, Department of Orthopaedics, Katuri medical college & Hospital, Chinakondrupadu, Guntur, India