Investigation of preliminary clinical outcome following PCL-retaining total knee arthroplasty with posterior tibial slope
10.3760/cma.j.issn.0253-2352.2010.08.003
- VernacularTitle:胫骨后倾截骨对后十字韧带保留型全膝关节置换术疗效的影响
- Author:
Yu XIAO
;
Fujiang ZHANG
;
Jun GUO
;
Kaijing REN
;
Jianhua YU
;
Zhiguo GAO
- Publication Type:Journal Article
- Keywords:
Arthroplasty,replacement,knee;
Posterior cruciate ligament;
Tibia;
Osteotomy;
Treatment outcome
- From:
Chinese Journal of Orthopaedics
2010;30(8):743-747
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the preliminary clinical outcome following PCL-retaining total knee arthroplasty (TKA) with 0°or 5°posterior tibial slope. Methods From Jan 2008 to Mar 2009, 84 patients (84 knees) with osteoarthritis (OA) underwent primary PCL-retaining TKA operations by the same surgical team. Among them, 27 patients (7 males, 20 females, with the average age of 69.5 years) underwent TKA using a cutting block and intramedullary cutting guide designed to impart a 5° posterior tibial slope (group A); 57 patients (15 males, 42 females, with the average age of 67.4 years) underwent TKA using a cutting block and intramedullary cutting guide designed to impart a 5°posterior tibial slope (group B). The preoperative demographic data and functional data had no statistical differences. The postoperative tibial posterior angle, maximum extension, maximum flexion and Knee Society Score (KSS) were compared between the two groups. Results All patients were followed up 12～24 months with an average of 15.7 months. No paralysis, wound infection, prosthesis dislocation and loosening were found. The postoperative tibial posterior angle was 5.7°±2.1° in group A and 0.9°±0.6°in group B (P＜ 0.05). The postoperative maximum extension was 0.8°±0.3°in group A and 1.2°±0.4°in group B (P ＞0.05). The postoperative maximum flexion was 115.7°±4.8°in group A and 101.1°±5.6°in group B (P＜ 0.05). The postoperative KSS was 87.6±5.9 in group A and 83.3±7.2 in group B (P ＞0.05). Conclusion Increasing tibial posterior slope improved the postoperative maximum flexion, but not the maximum extension and KSS, in PCL-retaining TKA.
