short waist deformity
Introduction
Brief introduction of short waist deformity Congenital short-lumbar deformity is more common than congenital short-neck deformity, mainly due to waist shortening, and some cases with short-neck deformity can be confirmed by X-ray examination. basic knowledge The proportion of illness: 0.0002% - 0.0006% Susceptible people: no special people Mode of infection: non-infectious Complications: severe wedge deformation of the vertebral body with subluxation of the facet joint
Cause
Cause of short waist deformity
(1) Causes of the disease
The cause is unknown and some may be related to trauma.
(two) pathogenesis
There are three types of pathological anatomy of this type of malformation.
1. Congenital spine cracking, slipping off this phenomenon is more common, mainly because the two bone centers of the vertebral arch are not fused into one, in the body development process, as the individual weight increases, exercise and past strength The strengthening and various trauma factors can cause the vertebral body to slip off on the basis of the pseudo joint, the more serious the degree of slippage, and the more obvious the short waist deformity.
2. Congenital vertebral fusion: It is more common to merge two vertebral bodies into one piece. In the lumbar vertebrae, there are rarely more than 3 vertebral bodies merged into one piece. Because there are fewer patients directly in this case, it is mostly in physical examination. It was found that the cause of the disease was mainly due to the developmental disorder of two or more adjacent bone segments in the embryonic stage. The complete fusion was visible in the corresponding intervertebral space without any fissures, but half of the cases showed different widths and lengths. Etc., indefinite gaps, the intervertebral foramen are mostly narrow in this case.
3. Semi-vertebral malformation: Single-shot hemivertebra deformity mainly causes scoliosis or kyphosis. If the corresponding double-segmental vertebral deformity is present, the short-lost sign is displayed due to the lack of one vertebral body.
Prevention
Short waist deformity prevention
Congenital short-term malformations are significantly less common than congenital short-neck deformities, and some of them are associated with short-neck deformities. Clinical examination, as usual, and note whether the lumbar segment is shorter than normal, the distance between the rib angle at the midline of the bilateral iliac crest and the humerus should be measured.
Complication
Short waist deformity complications Complications severe wedge deformation of the vertebral body with subluxation of the facet joint
Congenital spine fracture, can be complicated by vertebral spondylolisthesis.
Symptom
Short-term lumbar deformity symptoms Common symptoms Polyneuritis Lumbar spine pain Spine stiffness
Clinical examination, as usual, and note whether the lumbar segment is shorter than normal, the distance between the rib angle at the midline of the bilateral iliac crest and the humerus should be measured.
Examine
Short waist deformity examination
1. X-ray examination : at least 2 plane images of the posterior anterior and lateral positions, preferably the left and right oblique positions, especially for the pedicle fusion, to determine the extent of the deformity and further observe the vertebral body. Slippage.
2. Other examinations : simple deformity generally does not require more complicated examinations, but for patients with cauda equina or spinal nerve root symptoms, CT, MRI, CTM or myelography should be selected as appropriate.
Diagnosis
Diagnosis of short waist deformity
The diagnosis of this disease is mainly based on clinical features and X-ray findings. Patients with combined neck (more common), chest (rare) deformity or other pathological changes can be diagnosed together.
