Repka M X, Fishman P J, Guyton D L
Wilmer Ophthalmological Institute, Johns Hopkins University School of Medicine, Baltimore, Md.
J Pediatr Ophthalmol Strabismus. 1990 Nov-Dec;27(6):286-90. doi: 10.3928/0191-3913-19901101-04.
The use of "hang-back" suspensions has been shown to be an effective means of weakening rectus muscles. The exact position where the muscle reattaches to the globe has, however, been questioned. We performed eight large hang-back recessions on the rectus muscles of cynomolgus monkeys. Eight weeks postoperatively the attachment sites were determined by reexploration. Six of the recessions were within 0.5 mm of the intended site. The muscles were found an average of 0.4 mm anterior to the intended position. These results confirm that the muscle reattaches close to the intended location. Eight exaggerated recessions were similarly performed; these were more variable in the site of reattachment. Only three muscles were reattached within 0.5 mm of the intended site. There was a mean forward reattachment of 1.1 mm. Four of the 16 muscles were found reattached by a pseudotendon rather than directly to the sclera.
“后徙”悬吊术已被证明是削弱直肌的一种有效方法。然而，肌肉重新附着于眼球的具体位置一直受到质疑。我们对食蟹猴的直肌进行了八次大型后徙悬吊术。术后八周，通过再次探查确定附着部位。其中六次后徙在预期部位0.5毫米范围内。发现肌肉平均位于预期位置前方0.4毫米处。这些结果证实肌肉重新附着于接近预期的位置。同样进行了八次过度后徙；这些在重新附着部位更具变异性。只有三条肌肉在预期部位0.5毫米范围内重新附着。平均向前重新附着1.1毫米。在16条肌肉中，有四条是通过假腱而不是直接附着于巩膜重新附着的。
