屈曲过度

Pathological study revealed compression mainly caused neuron atrophy and anterior column damage in the white matter, on the other hand, excessive cervical flexion combined with compression resulted in neuron atrophy, neuron edema, chromatolysis、vacuolization and it also caused demyelination、axon degeneration、axon necrosis in all the columns of the white matter.

病理结果显示，单纯压迫时，神经元的变化以萎缩为主，白质损害主要在前索。而在过度屈曲活动组，神经元除萎缩外，肿胀、尼氏体溶解和空泡变性等病理变化也比较常见，白质各索均可有损害。

The initial range-of-motion exercises are performed to prevent adhesion formation; extension is allowed to 0°, but it is essential to avoid both hyperextension and flexion past 90°, which can place undue tension on the grafts.

最初的关节活动范围练习主要是为了防止粘连形成，伸展的范围可达0°，但必须避免过伸以及屈曲超过90°，否则可能会使移植的肌腱承受过度的张力。

There are more than two dozen reported cases of lumbar facet dislocation after rapid deceleration injuries (e.g., traffic accidents), most involving L5 S1.61,112 115 The mechanism of injury in these cases is purported to be a combination of hyperflexion, distraction, and rotation.61,112,116 In a posthumous study conducted in 31 lumbar spines of subjects who died of traumatic injuries,Twomey et al.117 found occult bony fractures in the superior articular process or subchondral bone plate in 35% of victims, and z-joint capsular and/or articular cartilage damage in 77% of cases.

多项研究报道了急性减速伤后发生腰椎小关节分离，多数发生于L5-S1，其机制可能为过度屈曲，分离和旋转。在一项对死亡病例的研究中，Twomey 等发现，31例因交通事故死亡的人中有35%的腰椎上关节突或软骨下骨性终板存在隐匿骨折，77%存在小关节囊和/或关节软骨损伤。作者总结创伤后隐匿性股和软组织损伤也许是腰痛的来源。

There are more than two dozen reported cases of lumbar facet dislocation after rapid deceleration injuries (e.g., traffic accidents), most involving L5 S1.61,112 115 The mechanism of injury in these cases is purported to be a combination of hyperflexion, distraction, and rotation.61,112,116 In a posthumous study conducted in 31 lumbar spines of subjects who died of traumatic injuries,Twomey et al.117 found occult bony fractures in the superior articular process or subchondral bone plate in 35% of victims, and z-joint capsular and/or articular cartilage damage in 77% of cases.

多项研究报道了急性减速伤后发生腰椎小关节分离，多数发生于L5-S1，其机制可能为过度屈曲，分离和旋转。在一项对死亡病例的研究中，Twomey 等发现，31例因交通事故死亡的人中有35%的腰椎上关节突或软骨下骨性终板存在隐匿骨折，77%存在小关节囊和/或关节软骨损伤。

Measurement should be done after each step to properly correct the deformity and avoid secondary instability. Alignment of the femur and tibia should be correct to ensure the center of the femoral head, knee joint and ankle joint at the same line.

结果显示对于严重的膝内外翻畸形和屈曲畸形的患者，软组织松解平衡应有计划、分步骤地进行，每完成一步都要进行测量，要做到既纠正到位，又不可过度纠正造成关节继发不稳定。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。