title: Letter regarding article by Ni et al.: Press-fit cementless acetabular fixation with and without screws.
authors.affiliation: The Second Department of Orthopaedics, Handan Central Hospital, Handan, 056001, Hebei Province, People's Republic of China.
authors.forename: F-J
authors.initials: FJ
authors.lastname: Liu
authors.forename: H
authors.initials: H
authors.lastname: Ren
authors.forename: X-K
authors.initials: XK
authors.lastname: Ding
authors.forename: Y
authors.initials: Y
authors.lastname: Shen
mesh_terms: D000077:Acetabulum / Q000601:surgery*; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation* / Q000379:methods*; D001863:Bone Screws; D006622:Hip Prosthesis; D006801:Humans