Wang G J, Reger S I, Shao Z H, Morton C L, Stamp W G
Clin Orthop Relat Res. 1984 Sep(188):303-8.
In 23 dogs, polymethylmethacrylate (PMMA) was safely implanted in the region of the spinal cord. The dogs were treated by bone or cement fixation after anterior excision of a single cervical vertebral body. Fixation was compared at 0-18 weeks, with control values obtained from 11 dogs. Anterior cement fixation did not displace after 18 weeks. The anterior bone graft appeared to achieve adequate fixation strength around six weeks. The strength of the bone-graft fixation increased, while that of cement fixation decreased somewhat with time. At all time intervals, the ratio of energy absorption to structural failure was somewhat higher with bone graft than with PMMA.
在23只犬中，聚甲基丙烯酸甲酯（PMMA）被安全植入脊髓区域。在单个颈椎椎体前路切除后，这些犬接受了骨固定或骨水泥固定治疗。在0至18周时对固定情况进行比较，并从11只犬获得对照值。18周后前路骨水泥固定未发生移位。前路植骨在约六周时似乎达到了足够的固定强度。随着时间推移，植骨固定强度增加，而骨水泥固定强度有所下降。在所有时间间隔，植骨的能量吸收与结构破坏之比均略高于PMMA。
