Early Patellofemoral Function of Medial Pivot Prostheses Compared with Posterior‐Stabilized Prostheses for Unilateral Total Knee Arthroplasty

Autor: Zhen Wang, Yu‐qing Zhang, Chang‐rong Ding, Ying‐zhen Wang, Hao Xu
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Orthopaedic Surgery, Vol 13, Iss 2, Pp 417-425 (2021)
Druh dokumentu: article
ISSN: 1757-7861
1757-7853
DOI: 10.1111/os.12895
Popis: Objective To systematically evaluate the patellofemoral joint design of medial pivot prosthesis, which incorporates a variety of “patella‐friendly” design features, by comparing clinical and radiographic results with another prosthesis. Methods All consecutive patients who underwent unilateral total knee arthroplasty (TKA) with medial pivot prosthesis (Group MP, 126 cases) between September 2016 and April 2018 were enrolled in this retrospective study. For each patient reviewed, a control patient was matched, according to age, gender, side, body mass index (BMI), preoperative range of motion (ROM), and operating period, who had received primary unilateral TKA with a conventional posterior‐stabilized prosthesis at the same period as the study group (Group PS, 126 cases). All patients underwent at least 1‐year follow‐up. At the preoperative and final follow‐up periods, data on the Knee Society Score (KSS) score, WOMAC score, Kujala score, and ROM were collected. Merchant views were taken with the knee flexion at 30°, 60°, and 90° to measure patella shift and tilt. Preoperative posterior condylar angle (PCA) was also measured. Postoperative complications, including anterior knee pain, maltracking, patellar clunk or crepitus (PCC), were evaluated. Results There were no significant differences in the demographics or clinical characteristics between the two groups. No statistically significant difference was identified in the KSS total score, including knee score and function score, or in the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score between the two groups after the operation. We found statistically significant differences in the postoperative Kujala scores and the ROMs between the two groups. The mean Kujala score in group MP was better than in group PS (MP 77.16 ± 3.80 vs PS 75.97 ± 4.06, P
Databáze: Directory of Open Access Journals
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje