The transition of the lumbar-sacral vertebra

Border spine is unstable: border vertebra one Department may take morphological features of the adjacent, to become like him (assimilate). Assimilation is observed in all transitional borders spine. The big practical importance of assimilation in the lumbar-sacral border - sacralization and globalizatsii. Both of these anomalies of development it is more convenient to consider together as "transition vertebra in the lumbosacral the border.
The origin of the transition vertebra - sacralization and globalizatsii is explained by the peculiarities of ontogenetic development. Some authors occurrence of sacralization and globalizatsii consider the identity of the bookmark points of ossification in the vertebrae. In laying extra points ossification in the fifth lumbar vertebra occurs sacralization, in the absence of some of complete points of ossification - globalizacija. Many authors believe that sacralization occurs in preadolescent - 13-16 years; however radiographically sacralization sometimes found at the age of 5-6 years.

types of socialization
Fig. 2. Types of socialization: 1 - incomplete bilateral; 2 - bilateral composite; 3 - bilateral bone; 4 - sided joint; 5 - sided bone; 6 - bilateral bone and joint.
forms of assimilation vertebra
Fig. 1. Forms of assimilation vertebra: 1 - bilateral joint sacralization; 2 - bilateral bone sacralization; 3 - sided joint of globalizatsii; 4 - sided bone sacralization.

The form and degree of assimilation of the transition vertebra very diverse (Fig. 1 and 2). Assimilation is manifested mainly in the change in the transverse processes of the vertebrae. In some cases there is only an extension of one or both of the transverse processes in the last lumbar vertebra, others expressed their deformation, characterized by the connection with lateral masses of the sacrum.
Connections are bone by cartilage, connective tissue and sometimes in the form of joint, which forms the fixed and mobile forms of assimilyatsii. First are asymptomatic anomalies, the latter can be complicated deforming arthrosis and be accompanied by those or other clinical symptoms (pain, limited mobility, sometimes recurrent radiculitis and lumboisialgia). Treatment activities are reduced to the elimination of pain, peace in the periods of exacerbation, massage and medical gymnastics in Magnoliya periods, and balneological procedures.
Depending on the degree and type of assimilation may be complete or incomplete forms of the transition vertebra. When fully true form the transverse processes of the last lumbar vertebra reach the side of the masses of the sacrum. In case of incomplete form the transverse processes of the last lumbar vertebra increased, but not connected with the side of the masses of the sacrum. Among full of transitional forms vertebra distinguish bone, joint and bone and joint form. When bone forms transverse process of vertebra are fully side with the masses of the sacrum, with joint - formed singedrs, sinatras and true); bone and joint forms are characterized by Cilostazol one of increased transverse processes and sinharasa other transverse process with lateral mass of the sacrum.
Articular process assimilated lumbar vertebra usually remain separate, not spliced even when fully bone fusion lumbar vertebra with the sacrum, which indicates the origin I sacral vertebra at estepanova the rump of the lumbar vertebra. Incomplete assimilation also are bilateral and unilateral.
Globalizacija (if chetyrehvalkovoj sacrum) occurs very rarely. It is necessary to consider that globalizacija can be and when Paterswolde rump, if the last sacral vertebra comes from coccyx, that is assimilated first PC. Globalizacija is found very rarely in individual cases on many hundreds of x-ray of the lumbar-sacral spine. The transition vertebra with features of sacral, can almost be considered an expression of socialization.
The exact definition of numerical variations sacralization and globalizatsii requires account vertebrae of all spine, since I neck.