[Meniscoids of the intervertebral joints]

Area of Science:

• Spinal anatomy and biomechanics
• Histology of synovial joints
• Vertebral column morphology

Context:

• Meniscoids are intra-articular structures found in human intervertebral joints.
• Their role in spinal function and potential contribution to pain has been debated.
• Previous studies have focused on specific spinal regions or types of meniscoids.

Purpose:

• To investigate the distribution, location, shape, and types of meniscoids in human intervertebral joints from the atlanto-occipital joint to the sacrum.
• To determine the prevalence of mobile meniscoids and their potential association with spinal blockade and vertebrogenous complaints.

Summary:

• Meniscoids (synovial, fat, fibrous) were found in all intervertebral joints studied.
• Mobile meniscoids, particularly in the lumbar spine, were identified and described.
• Meniscoid morphology varied with age and spinal region, with larger, more diverse types in the lumbar spine.

Impact:

• The findings confirm the presence and variability of meniscoids in all spinal joints, highlighting their role in joint congruence and fluid dynamics.
• Mobile meniscoids are implicated as a potential cause of spinal blockade and pain through entrapment or extrapment mechanisms.
• This study supports the rationale for manipulative treatment in cases of spinal blockade attributed to meniscoids.