Intra-articular meniscoid folds in thoracic zygapophysial joints.

Study Design: A descriptive morphologic anatomic study was performed.

Objective: The study aimed to investigate intra-articular meniscoids (folds) and cartilage quality in the thoracic zygapophysial joints (ZAJs), and to discuss them in the context of possible causes of thoracic back pain.

Summary Of Background Data: The clinical relevance of the intra-articular meniscoid structures described in the cervical and lumbar spine is unclear, particularly in relation to ZAJ blockades.