Three-dimensional study of the musculotendinous architecture of lumbar multifidus and its functional implications.

Lumbar multifidus (LMT) is a key muscle, which provides stability to the lumbar spine, and has been shown to have altered neuromuscular recruitment following acute episodes of low back pain. Architectural parameters are important determinants of function, but have not been well documented for LMT. Therefore, the purpose of this study is to model and quantify the architecture of LMT throughout its volume.

Anatomy of the interosseous region of the sacroiliac joint.

Study Design: Anatomical study of the interosseous region of the sacroiliac joint (SIJ) complex.

Objectives: To document and quantify the surface topography of the interosseous region of the SIJ.

Background: A review of the literature reveals that little consideration has been given to the interosseous region of the SIJ anatomically, biomechanically, and clinically.