Deterioration of Mechanical Properties of the Autograft in Controlled Stress-shielded Augmentation Procedures
Deterioration of Mechanical Properties of the Autograft in Controlled Stress-shielded Augmentation Procedures
复制标题
受控应力屏蔽增强手术中自体移植物机械性能的恶化
DOI：
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发表时间：
1994
影响因子：
4.8
通讯作者：
Kozaburo Hayashi
中科院分区：
文献类型：
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作者：
T. Majima;K. Yasuda;N. Yamamoto;K. Kaneda;Kozaburo Hayashi
将120只成年雌性日本白色兔分为完全应力屏蔽、部分应力屏蔽和假手术3组，研究了部分应力屏蔽和完全应力屏蔽对原位冷冻髌腱力学性能和组织学的影响。在前两组中，用聚酯人工结扎将肌腱张力分别降至正常力的0%和约30%。对术后1、2、3、6或12周采集的髌骨-髌腱-胫骨复合体进行拉伸试验。与假手术组相比，完全应力屏蔽组的抗张强度在3周和6周时分别下降至17%和28%，部分应力屏蔽组在3周和12周时分别下降至54%和63%。与假手术组相比，完全应力屏蔽组髌腱横截面积在2周和3周分别增加至156%和157%，部分应力屏蔽组在2周时增加至133%。应力遮挡显着改变拉伸强度，切线模量，和横截面积在原位冷冻髌骨十吨，这些变化取决于应力遮挡的程度。组织学观察表明，髌腱发生了重塑，而在束中没有细胞。
Effects of partial and complete stress shielding on me chanical properties and histology of in situ frozen pa tellar tendons were studied in 120 mature female Japa nese White rabbits that were divided into three groups: completely stress-shielded, partially stress-shielded, and sham-operated groups. In the former two groups, tendon tension was reduced to 0% and about 30% of normal force, respectively, with a polyester artificial liga ment. Tensile tests were conducted on patella-patellar tendon-tibia complexes harvested 1, 2, 3, 6, or 12 weeks after surgery. Tensile strength significantly de creased compared with the sham group to 17% and 28% at 3 and 6 weeks, respectively, in the completely stress-shielded group, and to 54% and 63% at 3 and 12 weeks, respectively, in the partially stress-shielded group. Patellar tendon cross-sectional area significantly increased to 156% and 157% at 2 and 3 weeks, re spectively, in the completely stress-shielded group and to 133% at 2 weeks in the partially stress-shielded group, compared with the sham group. Stress shielding significantly changed tensile strength, tangent modulus, and cross-sectional area of in situ frozen patellar ten don ; these changes depended on degree of stress shielding. Histologic observations indicated that remod eling occurred in the patellar tendon while there were no cells in the fascicle.
影响因子：
2.4
作者：
BUTLER, DL;GROOD, ES;BRACKETT, K
通讯作者：
BRACKETT, K