Lumbar facet joint degeneration contributes to degenerative lumbar scoliosis induced by asymmetric stress in rabbits / 南方医科大学学报

OBJECTIVE@#To investigate the role of lumbar facet joint degeneration in the development of degenerative lumbar scoliosis caused by asymmetric stress.@*METHODS@#Thirty-six New Zealand white rabbits were randomly divided into 3 groups (n=12): Group A with aspiration of the nucleus pulposus to induce disc degeneration; Group B with removal of the left capsule from the facet joints at L3/4 to L5/6 to induce degeneration; and Group C with both treatments. Springs were deployed on the left adjacent facets at L3/4, L5/6 and L5/6 to stress the facet joints. Serial radiographs were taken at 3 and 6 months, and the facet joint tissues were sampled at 6 months for Safranin O-fast green staining to assess the severity of cartilage degeneration based on the Mankin score.@*RESULTS@#The Cobb angle differed significantly among the 3 groups (=24.865, =0.000). In all the groups, the Cobb angles at 6 months increased significantly as compared with that at 3 months ( <0.05). The Cobb angles were significantly greater in group C than in the other 2 groups at both 3 and 6 months ( <0.05) but showed no significant difference between Groups A and B (>0.05). The severity of facet joint degeneration also differed significantly among the 3 groups (= 22.009, =0.000), and was the most severe in group C ( <0.05); facet joint degeneration was more severe in group B than in group A ( <0.05).@*CONCLUSIONS@#Facet joint degeneration is an important factor that contributes to the development of degenerative lumbar scoliosis. Disc degeneration and facet joints degeneration can lead to lumbar scoliosis, which in turn aggravates disc degeneration, facet joints degeneration and asymmetric stress, thus forming a vicious circle to further exacerbate lumbar scoliosis.

CLINICAL VALUE OF X-RAY EXAMINATION IN THE DIAGNOSIS OF BONE AND JOINT TRAUMA AND SOFT TISSUE CHANGES / 现代医院

Objective To study the clinical value of X -ray examination in the diagnosis of bone and joint trauma and soft tissue changes .Methods 60 patients diagnosed with bone and joint trauma admitted in our hospital from January 2012 to January 2014 were selected and given anterior and posterior X -ray, patients with no definite diseases were given varus -valgus position shooting in order to further determine definite diseases , relative data were then collected .Results X -ray examination could assistthe development of treatment plans .X-ray plain films could not directly demonstrate the soft tissue changes without the auxiliary method of MRI .Conclusion Patients u-sually only pay attention to the severity of fracture but ignore the obvious trauma fractures and soft tissue changes .The application of X-ray examination enables the patients to attach importance to the treatment of traumatic soft tissue changes, and is worthy of promotion .