Application of Rapid Prototyping Pelvic Model for Patients with DDH to Facilitate Arthroplasty Planning: A Pilot Study

• Published in: The Journal of arthroplasty 2015-11, Vol.30 (11), p.1963-1970
• Main Authors: Xu, Jie, MD, Li, Deng, PhD, Ma, Ruo-fan, MD, Barden, Bertram, MD, Ding, Yue, MD
• Format: Article
• Language: English
• Subjects: 3-D print; Aged; arthroplasty; Arthroplasty, Replacement, Hip - instrumentation; Arthroplasty, Replacement, Hip - methods; DDH; Female; hip; Hip Dislocation, Congenital - complications; Hip Dislocation, Congenital - diagnostic imaging; Hip Prosthesis; Humans; Imaging; Imaging, Three-Dimensional; Male; Middle Aged; Models, Anatomic; Orthopedics; Osteoarthritis, Hip - complications; Osteoarthritis, Hip - surgery; Patient Care Planning; Pelvic Bones - diagnostic imaging; Phantoms, Imaging; Pilot Projects; Printing, Three-Dimensional; Surgery, Computer-Assisted; Tomography, X-Ray Computed
• ISSN: 0883-5403; 1532-8406
• DOI: 10.1016/j.arth.2015.05.033

Abstract Total hip arthroplasty (THA) is challenging in cases of osteoarthritis secondary to developmental dysplasia of the hip (DDH). Acetabular deficiency makes the positioning of the acetabular component difficult. Computer tomography based, patient-individual three dimensional (3-D) rapid prototype technology (RPT)-models were used to plan the placement of acetabular cup so that a surgeon was able to identify pelvic structures, assess the ideal extent of reaming and determine the size of cup after a reconstructive procedure. Intraclass correlation coefficients (ICCs) were used to analyze the agreement between the sizes of chosen components on the basis of preoperative planning and the actual sizes used in the operation. The use of the 3-D RPT-model facilitates the surgical procedures due to better planning and improved orientation.