Tredwell S J, O'Brien J P
J Bone Joint Surg Am. 1975 Apr;57(3):332-6.
Roentgenographic evidence of avascular necrosis of the upper part of the dens was observed in thirteen of ninety-four patients treated for tuberculous kyphosis or non-tuberculous scoliosis using halo-pelvic distraction. Four patients had some residual loss of motion. A significant relationship was demonstrated between avascular necrosis and the amount of distraction visible on roentgenograms.
在使用头盆环牵引治疗结核性脊柱后凸或非结核性脊柱侧凸的94例患者中,有13例观察到齿状突上部缺血性坏死的X线证据。4例患者存在一些残留的活动度丧失。X线片上可见的缺血性坏死与牵引量之间存在显著相关性。