Novel TPLO alignment jig/saw guide reproduces freehand and ideal osteotomy positions

Objectives: To evaluate the ability of an alignment jig/saw guide to reproduce appropriate osteotomy positions in the tibial plateau leveling osteotomy (TPLO) in the dog.
Methods: Lateral radiographs of 65 clinical TPLO procedures using an alignment jig and freehand osteotomy performed by experienced TPLO surgeons using a 24 mm radial saw blade between Dec 2005 - Dec 2007 and Nov 2013 - Nov 2015 were reviewed. The freehand osteotomy position was compared to potential osteotomy positions using the alignment jig/saw guide. The proximal and distal jig pin holes on postoperative radiographs were used to align the jig to the bone; saw guide position was selected to most closely match the osteotomy performed. The guide-to-osteotomy fit was categorized by the distance between the actual osteotomy and proposed saw guide osteotomy at its greatest offset (?1 mm = excellent; ?2 mm = good; ?3 mm = satisfactory; >3 mm = poor).
Results: Sixty-four of 65 TPLO osteotomies could be matched satisfac...

研究目的：评估定位夹具（alignment jig）在犬胫骨平台平整截骨术（tibial plateau leveling osteotomy, TPLO）中重现合适截骨位置的能力。
研究方法：回顾性分析2005年12月至2007年12月、2013年11月至2015年11月期间，由经验丰富的TPLO外科医师使用24mm径向锯片（radial saw blade）完成的65例采用定位夹具与徒手截骨的临床TPLO手术的侧位X线片。将徒手截骨位置与采用定位夹具/锯导板（saw guide）的潜在截骨位置进行对比。通过术后X线片上的夹具近、远端销钉孔将夹具与骨骼对齐，并选择与实际完成的截骨最为匹配的锯导板位置。以实际截骨面与预设锯导板截骨面之间的最大偏移距离对导板与截骨的匹配度进行分级：≤1mm为优秀；≤2mm为良好；≤3mm为合格；＞3mm为不合格。
研究结果：65例TPLO截骨术中，有64例可实现合格匹配……