Sacral Region

Description

Posterior surface anatomy of the female lumbosacral region is centered over the sacrum, with the sacral base lying inferior to the lumbar spine and superior to the intergluteal cleft. Laterally, the contour transitions toward the posterior superior iliac spines and iliac crests, creating the recognizable “dimples of Venus” region overlying the sacroiliac joints. Inferiorly, the sacrum narrows toward the coccygeal area at the superior aspect of the gluteal cleft, while the overlying skin and subcutaneous tissue define the rump contour. Clothing at the upper gluteal region provides a clear boundary for landmark teaching. Clinical work around the sacral region depends on reliable posterior landmarks because much of the sacrum is palpated rather than seen. Accurate localization helps when screening for sacroiliac joint pain patterns, planning posterior pelvic fixation trajectories relative to the posterior superior iliac spine, or documenting pressure injury risk over the sacrum in immobilized patients. A short, uncluttered posterior view also supports teaching of lumbosacral dermatomes and surface reference points used in physical examination. Clean landmarks matter. Use this asset for anatomy and surface anatomy courses, patient-education materials discussing sacroiliac dysfunction and low back pain localization, and nursing or wound-care publications illustrating sacral pressure-area assessment in darker skin tones. Anatomical accuracy verified by SciePro's Medical Advisory Board.