Barakatt E, Smidt G L, Dawson J D, Wei S H, Heiss D G
Amador Home Health Agency, Jackson, CA, USA.
J Orthop Sports Phys Ther. 1996 May;23(5):309-19. doi: 10.2519/jospt.1996.23.5.309.
Some clinical approaches to the treatment of low back pain evaluate and treat observed asymmetries of pelvic posture and motion. Scientific evidence suggests the motion available between the innominate bones is small and variable in nature. The purposes of this investigation were 1) to determine if interinnominate motion of subjects without low back pain was symmetrical in reciprocal test posture combinations, 2) to assess innominate bone symmetry in standing, and 3) to determine if a difference in the magnitude of interinnominate motion was present between a subject group which performs more frequent flexibility activities compared with a subject group representing the general population. Thirty-four subjects (eight male gymnasts, nine female gymnasts, eight male nongymnasts, and nine female nongymnasts) were evaluated in standing and three other reciprocal postures (modified standing, modified sitting, and half-kneeling). In each posture, the Metrecom Skeletal Analysis System was used to obtain coordinates for the anterior and posterior iliac spines. Projection angles were used to determine the relative positions of the right and left innominate bones. Results suggest that stand to right modified standing and stand to left modified standing oblique sagittal interinnominate composite motions were symmetrical, stand to right modified sitting and stand to left modified sitting oblique sagittal interinnominate composite motions were asymmetrical, and stand to right half-kneel and stand to left half-kneel oblique sagittal interinnominate composite motions' symmetrical properties were mixed depending on the group. Gymnasts as a group were found to have asymmetrically positioned innominate bones while nongymnasts as a group had symmetrically positioned innominate bones.
一些治疗下背痛的临床方法会评估并治疗观察到的骨盆姿势和运动的不对称性。科学证据表明，无名骨之间的运动在本质上很小且变化不定。本研究的目的是：1）确定无下背痛受试者在相互测试姿势组合中的无名骨间运动是否对称；2）评估站立时无名骨的对称性；3）确定与代表普通人群的受试者组相比，进行更频繁柔韧性活动的受试者组在无名骨间运动幅度上是否存在差异。对34名受试者（8名男性体操运动员、9名女性体操运动员、8名男性非体操运动员和9名女性非体操运动员）在站立及其他三种相互姿势（改良站立、改良坐姿和半跪姿）下进行了评估。在每种姿势下，使用Metrecom骨骼分析系统获取髂前上棘和髂后上棘的坐标。通过投影角度确定左右无名骨的相对位置。结果表明，从站立到右侧改良站立以及从站立到左侧改良站立的斜矢状面无名骨间复合运动是对称的，从站立到右侧改良坐姿和从站立到左侧改良坐姿的斜矢状面无名骨间复合运动是不对称的，从站立到右侧半跪和从站立到左侧半跪的斜矢状面无名骨间复合运动的对称特性因组而异。结果发现，作为一个群体，体操运动员的无名骨位置不对称，而非体操运动员作为一个群体，其无名骨位置对称。
