Polly D W, Sturm P F
Orthopaedic Surgery Service, Walter Reed Army Medical Center, Washington, DC, USA.
Spine (Phila Pa 1976). 1998 Apr 1;23(7):804-8. doi: 10.1097/00007632-199804010-00013.
A prospective study performed in two institutions where patients scheduled for surgical management of scoliosis were evaluated with traction and supine side bending radiographs to determine curve flexibility.
To determine if there is a difference in the flexibility of curves as determined by side bending or traction films.
Fifty-eight patients scheduled for surgery underwent preoperative radiographic evaluation using supine side bending and traction radiographs. The surgeons were free to use the information as they saw fit in determining levels of fusion. All curves were measured using the method of Cobb. Curves were analyzed in three groups: > 60 degrees, 50-60 degrees, and < 50 degrees. A comparison then was made between the traction and side bend films to determine which method demonstrated greater flexibility. Measurement error was assumed to be +/- 5 degrees. If the measurements were within 5 degrees, then the two methods were considered to be equivalent.
In curves > 60 degrees, greater flexibility was seen on traction films. In curves < 50 degrees, side bending showed greater flexibility. In curves between 50 degrees and 60 degrees, side bending showed greater flexibility in the thoracic spine, whereas in the lumbar spine both films showed equivalent flexibility.
Traction shows greater curve flexibility in curves > 50 degrees, whereas in curves < 50 degrees, side bending shows greater flexibility.
在两家机构进行的一项前瞻性研究，对计划接受脊柱侧弯手术治疗的患者进行牵引和仰卧位侧弯X线片评估，以确定曲线柔韧性。
确定由侧弯或牵引片所测定的曲线柔韧性是否存在差异。
58例计划接受手术的患者在术前接受了仰卧位侧弯和牵引X线片的影像学评估。外科医生在确定融合水平时可根据自身判断自由使用这些信息。所有曲线均采用Cobb法测量。曲线分为三组进行分析：>60度、50 - 60度和<50度。然后对牵引片和侧弯片进行比较，以确定哪种方法显示出更大的柔韧性。测量误差假定为±5度。如果测量值在5度以内，则认为这两种方法等效。
在>60度的曲线中，牵引片显示出更大的柔韧性。在<50度的曲线中，侧弯显示出更大的柔韧性。在50度至60度之间的曲线中，胸椎侧弯显示出更大的柔韧性，而在腰椎，两种片子显示出等效的柔韧性。
对于>50度的曲线，牵引显示出更大的曲线柔韧性，而对于<50度的曲线，侧弯显示出更大的柔韧性。
