title: Reviewer's comment.
authors.affiliation: Spinal Disorders Unit, Nottingham University Hospital, UK.
authors.forename: R C
authors.initials: RC
authors.lastname: Mulholland
mesh_terms: D006621:Hip Joint; D006801:Humans; D007592:Joint Diseases / Q000175:diagnosis*; D007866:Leg; D017699:Pelvic Pain / Q000175:diagnosis*; D010808:Physical Examination