Specific Anatomy of the Coccygeal Region of the Back

Description

Posterior surface anatomy of the lumbosacral and coccygeal region is presented on a standing Black adult female, with a color overlay marking the midline area over the sacrococcygeal junction. The sacrum lies superior to the coccyx at the inferior terminus of the vertebral column, and in this posterior view the coccyx projects inferiorly toward the intergluteal cleft. Laterally, the highlighted field sits between the posterior superior iliac spine region and the upper gluteal contour, framing the shallow soft tissue coverage typical over the distal sacrum. Midline anatomy dominates. Clinically, this region matters because the coccyx and its sacrococcygeal articulation are frequent pain generators after a fall in the seated position, with coccydynia often worsened by prolonged sitting and by direct palpation just inferior to the sacral apex. The posterior view supports teaching of surface landmarks used during exam, including localization of tenderness to the coccygeal tip versus referred pain from the lower lumbar spine or sacroiliac joint. It also aligns with procedural planning for caudal epidural access, where the sacral hiatus sits superior to the coccyx and must be distinguished from the sacrococcygeal junction. Educators can place this asset into musculoskeletal anatomy modules on the vertebral column, physical examination instruction on low back and tailbone pain, or patient-facing materials explaining coccygeal contusion versus fracture. It also suits orthopedics, PM&R, and pain medicine presentations when discussing imaging correlation, posture modification, and indications for local injection or coccygectomy in refractory cases. Anatomical accuracy verified by SciePro's Medical Advisory Board.