Morphometric study of patella to assess the feasiblity of patellar resurfacing in patients undergoing total knee replacement

Rohan Krishnan, R. Lalchandani, Jaiveer Singh, Mohit Singh, Askash Tomar
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Abstract

: We aimed at determining about the suitability of implants available for Indian population by assessing the intra op measurement of patella in all its dimensions viz anteroposterior, superioinferior and mediolateral diameter in Indian patients.Also, we aimed at proving that whether any co-relation exists between radiological and intraoperative morphometry of patella. We also wanted to study whether any correlation exists between patellar size and anthropometric parameters like height and age.: 55 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 Morphometery 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.: Prospective cohort study. The smallest available patellar implant in India is about 8 mm in size which is not suitable for Indian 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.: Hence in this study we conclude that there is a need of better designed implants for Indian patients as the presently available implants are mainly designed for western population making it unfeasible to resurface patella for Indian surgeons.
髌骨形态计量学研究评估全膝关节置换术患者髌骨表面置换的可行性
我们的目的是通过评估髌骨的所有尺寸,即印度患者的前后、上下和中外侧直径,来确定可用于印度人群的植入物的适用性。同时,我们旨在证明是否有亲密关系之间存在放射性和术中髌骨的形态测量学。我们还想研究髌骨大小与身高和年龄等人体测量参数之间是否存在相关性。:本研究选择55例4级OA膝关节患者,术前x线片,AP视图,Lat视图,Skyline视图和Merchant视图。术前髌骨形态测量记录x线表现。所有患者由标准中线切口内侧parapatellar关节切开术。通过游标卡尺进行髌骨内测量并记录测量结果。前瞻性队列研究。印度可用的最小髌骨植入物尺寸约为8毫米,不适合印度患者。大多数患者的髌骨形态测量值低于髌骨置换的预期大小。因此,由于无法获得合适大小的髌骨植入物,许多患者无法选择髌骨置换术。,因此在本研究中我们得出这样的结论:有必要更好地为印度设计植入患者目前植入物主要为西方人口使其难以实现重现髌骨对印度外科医生。
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