Objective: This study aims to identify the causes of total knee arthroplasty (TKA) failing and evaluate the operational results for those who had revision total knee arthroplasty. Methods: From April 2022 to March 2023, descriptive research was carried out at the orthopedic department of the Mayo Hospital in Lahore, Pakistan. This research included all patients with original total knee replacements who had revision total knee arthroplasty. There is documentation of the need for revision arthroplasty. The functional result of a revision total knee replacement was evaluated using the WOMAC questionnaire at 6 months. Using a student t-test for comparing the WOMAC score before and after the surgery, a P value was determined. A p-value of 0.05 or less was deemed significant. Results: The 29 patients who received revision arthroplasty on 33 knees were included in the research. The patients had an average age of 60.60 years with ± 6.78 standard deviations, with 25 out of 29 participants (86.20%) being women. Revision arthroplasty was performed unilaterally in 25 patients (86.20%) and bilaterally in 4 patients (13.79%). Aseptic loosening occurred in 14 knees which were 42.42% of the total knees, infection occurred in 45.45% of knees (15), and periprosthetic fractures occurred in 4 knees (12.12%) as the most frequent causes of revision arthroplasty. Patients’ before-revision WOMAC discomfort, rigidity, and functional scores were 18.4, 8.1, and 72.5, respectively, prior to revision arthroplasty. With a WOMAC discomfort score of 2.2 ±1, rigidity score of 3.4 ± 6, and a functional score of 10.4 ± 4 at Six months after revision arthroplasty, there was a substantial improvement in WOMAC score as the p-value was less than 0.05. Conclusions: In our study, infection was the primary factor leading to revision arthroplasty. In most of the participants, revision arthroplasty had a functional result that was satisfactory.
Keywords: arthroplasty, infection, knee arthroplasty