Keech R V
Department of Ophthalmology, University of Iowa Hospitals and Clinics, Iowa City 52242-1091, USA.
Ophthalmic Surg Lasers. 1998 Oct;29(10):842-8.
The effect of adjustable suture strabismus surgery techniques on the ease of the postoperative adjustment has not been determined. An in vitro animal model was developed to compare several intraoperative variables with the ability to adjust the sutures.
The amount of force required to advance and recess the suture was measured using different sutures, suture coatings, needles, and scleral tunnel techniques.
Scleral tunnels placed at an angle to the muscle insertion caused significantly greater scleral resistance as compared with tunnels placed perpendicular to the insertion. Although differences were noted in the scleral resistance with different needles, suture coatings, and suture materials, there was a considerable overlap of the effect.
Scleral tunnels placed perpendicular to the muscle insertion and parallel to the plane of action of the muscle offer the best technique for minimizing scleral resistance. Other less important factors include shorter scleral tunnels, larger needles, and special suture coatings.
可调节缝线斜视手术技术对术后调整的便利性影响尚未确定。建立了一种体外动物模型，以比较几种术中变量与调整缝线能力的关系。
使用不同的缝线、缝线涂层、缝针和巩膜隧道技术，测量推进和后退缝线所需的力量。
与垂直于肌肉附着点放置的巩膜隧道相比，与肌肉附着点呈一定角度放置的巩膜隧道产生的巩膜阻力明显更大。尽管不同缝针、缝线涂层和缝线材料在巩膜阻力方面存在差异，但效果有相当大的重叠。
垂直于肌肉附着点并平行于肌肉作用平面放置巩膜隧道，是使巩膜阻力最小化的最佳技术。其他不太重要的因素包括较短的巩膜隧道、较大的缝针和特殊的缝线涂层。
