In vivo ultrasound measurement of posterior femoral glide during hip joint mobilization in healthy college students.

Study Design: Descriptive study.

Objectives: To measure femoral translational glide in vivo during posterior hip joint mobilization and to interpret data in the context of the normal arthrokinematic glide necessary for hip flexion.

Background: Joint play, or translational glide available at a joint, is largely influenced by the geometry of the articular surfaces.