title: Gluteal skyline (G.S.L.): a search for an objective sign in the diagnosis of disc lesions of the lower lumbar spine.
mesh_terms: D002081:Buttocks; D006801:Humans; D007403:Intervertebral Disc; D009132:Muscles / Q000503:physiopathology; D013130:Spinal Stenosis / Q000175:diagnosis*