Sacro-horizontal angle,
lumbosacral joint angle and sacral inclination angle were measured on the radiographic images.
The
lumbosacral joint has an increased inclination in the sagittal plane and the facets at this junction have a more vertical, frontal plane orientation [22], resisting anterior translation and making dislocation a rare injury.
[sup][6],[7],[8] But in the HGDS, the peculiar anatomy of the
lumbosacral joint is highly variable.
Pelvic X-ray should be ordered and not of
lumbosacral joint which will show abnormality.
The coronal facet orientation and
lumbosacral joint angle may explain why traumatic lumbosacral spondylolisthesis occurs mostly on L5S1 level instead of other levels.3 Different classifications for Lumbosacral spondylolisthesis have been published but no classification for L4-5 or other levels published in literatures because of its rarity.
The lumbar spine meets the sacrum at the
lumbosacral joint (L5-S1).
The model has a 3-DOF joint at the
lumbosacral joint. The other lumbar joints (T12-L1 to L4-L5) each have three constrained DOFs as in the WTM.
Bai Hui Found on the dorsal midline, at the
lumbosacral joint. Amy Snow and Nancy Zidonis are the authors of The Well-Connected Dog: A Guide to Canine Acupressure, Acu-Cat: A Guide to Feline Acupressure, and Equine Acupressure: A Working Manual.
During the musculoskeletal assessment particular attention should concentrate on the hip rotators, hip flexors, hip adductors, hip extensors, sacroiliac joint function,
lumbosacral joint function, leg lengths, upper body position, and general movement patterns.
This is especially true of the lumbar vertebrae, as the
lumbosacral joint is the most frequent site of spinal pathologies.
Among these injuries there were characteristic concomitant transverse processes fracture2-6 of adjacent segments and according to the points of Herron4 and Roche PH6 the presence of transverse process fracture must result in the suspicion of associated traumatic lesions of the
lumbosacral joint. Our case also suffered from fractures of transverse processes, which support the above viewpoint.
Each posture was generated by specifying the position of six DOFs in the legs and each of the three DOFs for the
lumbosacral joint. The positions of the remaining DOFs were calculated such that the closed chain between the feet was not broken.