We developed a new internal fixator: a rigid T: -shaped plate with locking screws and wedge-shaped spacer block for high tibial osteotomy. The purpose of the present study was to evaluate the radiographic outcome of opening-wedge high tibial osteotomy (OWHTO) using this new internal fixator. Sixty OWHTOs were performed in patients with medial compartment osteoarthritis and varus deformity (28 males and 23 females). Patients' mean age was 60.4 years. Preoperative and postoperative radiographs were obtained. The paired t-test was used to evaluate the differences over time with respect to radiographic variables. Union of the osteotomy gap was obtained in all patients, and no implant breakage was found. On anterior-posterior radiographs, a significant difference was observed (p < 0.01) between the preoperative and postoperative mean values of femorotibial angles (179.6 ± 3.2 vs. 170.6 ± 2.5 degrees), weight-bearing line ratios (23.8 ± 13.5 vs. 60.5 ± 11.5%), anatomical medial proximal tibial angles (84.8 ± 2.5 vs. 91.0 ± 2.6 degrees), and joint line coverage angles (3.6 ± 2.0 vs. 2.4 ± 1.7 degrees). On lateral radiographs, posterior tibial slopes were 11.5 ± 3.9 degrees preoperatively and 12.2 ± 4.0 degrees postoperatively (p < 0.01), and Insall-Salvati ratios were 1.04 ± 0.12 preoperatively and 1.06 ± 0.13 postoperatively (p = 0.24). Performing OWHTO using a new internal fixator with a wedge-shaped spacer achieves adequate correction of lower limb alignment without implant-related complications. This is a Level IV, case series study.

译文

:我们开发了一种新的内部固定器:带有锁定螺钉和楔形间隔块的刚性T型板,用于胫骨高度截骨术。本研究的目的是评估使用这种新型内固定器的楔形高位胫骨截骨术(OWHTO)的放射学结果。在患有内侧间隔性骨关节炎和内翻畸形的患者中进行了60次OWHTO(男性28例,女性23例)。患者的平均年龄为60.4岁。术前和术后摄片。配对t检验用于评估射线照相变量随时间的差异。所有患者均获得截骨间隙的联合,未发现植入物损坏。在前后X线片上,观察到股骨角的术前平均值与术前平均值(p <0.01)(179.6±3.2 vs. 170.6±2.5度),负重线比(23.8±13.5 vs. 60.5)之间存在显着差异(p <0.01)。 ±±11.5%),解剖学上内侧胫骨近角(84.8±±2.5 vs.91.0±±2.6°)和关节线覆盖角(3.6±2.0±2.4与2.4±1.7°)。在侧位片上,胫骨后倾斜度分别为术前11.5±3.9度和术后12.2±4.0度(p <0.01),Insall-Salvati比分别为术前1.04±0.12和术后1.06±0.13(p = 0.24)。使用带有楔形垫片的新型内部固定器进行OWHTO,可以充分矫正下肢的位置,而不会造成植入物相关的并发症。这是IV级案例研究。

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