Introduction: Total knee arthroplasty (TKA) is a highly successful procedure that can reduce pain and improve range of motion and function by correcting angular deformity and restoring the integrity of the articular surface. Currently, joint replacement for various types of knee arthritis is very common, and TKA can claim to be one of the greatest surgical advances. Objective: To determining about the suitability of implants available for Bangladeshi population by assessing the intra op measurement of patella in all its dimensions viz anteroposterior, superioinferior and mediolateral diameter in Bangladeshi patients. Methods: A cross-sectional study was carried out at Department of Orthopaedic Surgery, BSMMU, Dhaka, Bangladesh from January to June 2023. Total 60 patients of grade 4 OA knee were selected for this study and pre op x-rays were obtained, AP View, Lat View, Skyline view and Merchant view. Preop Morphometry of patella was recorded on x-ray findings. All patients were operated by standard midline incision with medial parapatellar arthrotomy. Intra op measurement of patella was done via Vernier caliper and measurements were recorded. Results:Total 60 patients of grade 4 OA knee were selected for this study. The smallest available patellar implant in Bangladesh is about 8 mm in size which is not suitable for Bangladeshi patient. most of the patients were having patellar morphometery lower than the expected size for patellar resurfacement. Hence, patellar resurfacement was not an option for many of the patients because of unavailability of patellar implants of appropriate size. Conclusion: Hence in this study we conclude that there is a need of better designed implants for Bangladeshi patients as the presently available implants are mainly designed for western population making it unfeasible to resurface patella for Bangladeshi surgeons.