Two types of laminolysis in adolescent athletes.
Two types of laminolysis in adolescent athletes.
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DOI：
10.1007/s10195-012-0206-y
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发表时间：
2012-12
影响因子：
2.8
通讯作者：
Dezawa, Akira
中科院分区：
文献类型：
--
作者：
Miyagi, Ryo;Sairyo, Koichi;Sakai, Toshinori;Yoshioka, Hiroshi;Yasui, Natsuo;Dezawa, Akira
脊柱的骨缺损分为三种主要类型：椎弓峡部裂、椎弓根松解和椎板松解。腰椎峡部裂是一种常见的应力性骨折，常发生于青少年运动员。椎弓根断裂是指椎弓根的应力性骨折，有时发生在单侧椎弓根断裂之后。椎板松解是一种罕见的应力性骨折，类似于椎弓根松解和椎弓根松解，有时会引起腰痛（LBP）。然而，其病理机制尚未阐明。最近，我们遇到了四名患有症状性板层溶解的青少年运动员。平均年龄为15.8岁（范围15-17岁）。所有受试者均报告重度LBP因腰椎伸展而加重，放射学检查显示两种类型的椎板溶解：半椎板型和椎板内型。为了阐明每种类型的机制，我们回顾了一项生物力学研究，发现半椎板型被认为是对侧椎弓峡部裂的结果，而椎板内型可能是由于重复伸展载荷引起的应力性骨折。
Bony defects in the spine are divided into three main types: spondylolysis, pediculolysis, and laminolysis. Lumbar spondylolysis is a well-known stress fracture that occurs frequently in adolescent athletes. Pediculolysis means stress fracture of the pedicle, which sometimes occurs subsequent to unilateral spondylolysis. Laminolysis is a rarely reported stress fracture similar to spondylolysis and pediculolysis that sometimes causes low back pain (LBP). However, its pathomechanism has not been elucidated. Recently, we encountered four adolescent athletes with symptomatic laminolysis. Mean age was 15.8 (range 15–17) years. All subjects reported severe LBP exacerbated by extension of the lumbar spine, and radiology revealed two types of laminolysis: hemilaminar type and intralaminar type. To elucidate the mechanisms of each type, we reviewed a biomechanical study, and found that the hemilaminar type was thought to be subsequent to contralateral spondylolysis, while the intralaminar type might be a result of a stress fracture due to repetitive extension loading.