title: The Effect of Dislocation Type (Crowe Types I-IV) on Pelvic Development in Developmental Dysplasia of the Hip: A Radiologic Study of Anatomy.
abstract: Classification of hip pathology in developmental dysplasia of the hip (DDH) helps in appropriate placement of implants during total hip arthroplasty. We examined preoperative unilateral and bilateral pelvic radiographs of 57 patients (114 hips) undergoing total hip arthroplasty because of DDH. Both sides of the pelvis were visually separated into 3 areas for comparison. When area ratios of hips with Crowe types II, III, and IV DDH were compared with ratios for healthy hips, values in hips with DDH were significantly low for the iliac wings, significantly high for the acetabular regions, and significantly low for the ischial area. Using a line crossing the healthy hip's teardrop and parallel to a line joining the distal sacroiliac joints is useful for calculating limb-length discrepancy.
authors.affiliation: Department of Orthopedic Surgery, Uludağ University, Nilüfer, Bursa, Turkey.
authors.forename: Ömer Faruk
authors.initials: ÖF
authors.lastname: Bilgen
authors.affiliation: Department of Orthopedic Surgery, Uludağ University, Nilüfer, Bursa, Turkey.
authors.forename: Necmettin
authors.initials: N
authors.lastname: Salar
authors.affiliation: Department of Orthopedic Surgery, Uludağ University, Nilüfer, Bursa, Turkey.
authors.forename: Muhammet Sadık
authors.initials: MS
authors.lastname: Bilgen
authors.affiliation: Department of Orthopedic Surgery, Private Medicabil Hospital, Nilüfer, Bursa, Turkey.
authors.forename: Müren
authors.initials: M
authors.lastname: Mutlu
authors.affiliation: Department of Orthopedic Surgery, Private Medicabil Hospital, Nilüfer, Bursa, Turkey.
authors.forename: Gökhan Kürşat
authors.initials: GK
authors.lastname: Kara
authors.affiliation: Department of Orthopedic Surgery, Uludağ University, Nilüfer, Bursa, Turkey.
authors.forename: Enis
authors.initials: E
authors.lastname: Gürsel
mesh_terms: D000077:Acetabulum / Q000002:abnormalities / Q000000981:diagnostic imaging*; D000293:Adolescent; D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip; D005260:Female; D006618:Hip Dislocation, Congenital / Q000145:classification / Q000000981:diagnostic imaging* / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D010384:Pelvic Bones / Q000002:abnormalities / Q000000981:diagnostic imaging*; D011859:Radiography; D055815:Young Adult
keywords: developmental dysplasia of the hip; hip center; leg-length discrepancy; pelvic landmarks; total hip arthroplasty