Authors’ Disclosure Statement: Dr. De Martino reports that he is a consultant to Lima Corporate. Dr. Dines and Dr. Craig report that they receive royalties from Zimmer Biomet for the development of the product (Comprehensive Shoulder VRS) discussed in this article. Dr. Gulotta reports that he is a consultant to Zimmer Biomet. Dr. Warren reports no actual or potential conflict of interest in relation to this article.
Dr. De Martino is a Clinical Fellow, Sports Medicine and Shoulder Service Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York. Dr. Dines is an Attending Orthopaedic Surgeon, Hospital for Special Surgery, Sports Medicine and Shoulder Service Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York, Professor, Weill Cornell Medical College, as well as Chairman and Professor of Orthopedic Surgery, Albert Einstein College of Medicine at LIJ, Bronx, New York. Dr. Warren is Professor of Orthopedic Surgery, Weill Cornell Medical College, and Attending Orthopedic Surgeon, Hospital for Special Surgery, Sports Medicine and Shoulder Service Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York. Dr. Craig is Chief Executive Officer, TRIA Orthopaedic Center Professor of Orthopaedic Surgery, University of Minnesota TRIA Orthopaedic Center, Bloomington, Minnesota. Dr. Gulotta is an Assistant Attending Orthopaedic Surgeon, Hospital for Special Surgery, and Assistant Professor of Orthopaedic Surgery, Weill Cornell Medical College, Sports Medicine and Shoulder Service Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York.
Address correspondence to: Lawrence V. Gulotta, MD, Sports Medicine and Shoulder Service, Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021 (tel, 646-797-8735; fax, 646-797-8726; email, gulottal@hss.edu).
Ivan De Martino, MD David M. Dines, MD Russell F. Warren, MD Edward V. Craig, MD, MPH Lawrence V. Gulotta, MD . Patient-Specific Implants in Severe Glenoid Bone Loss. Am J Orthop. February 8, 2018
TAKE-HOME POINTS
With the increasing number of arthroplasties performed, and the expanding indication for shoulder arthroplasty, the number of revision shoulder arthroplasties is also increasing.
Complex glenoid bone defects are sometimes encountered in revision shoulder arthroplasties.
Glenoid reconstructions with bone graft have reported encouraging short- to mid-term results, but the high number of complications is a concern.
Using the CAD/CAM technology patient-specific glenoid components have been created to reconstruct the glenoid vault in cases of severe glenoid bone loss.
Short-term clinical and radiographic results of patient-specific glenoid components are encouraging, however longer-term follow-up are needed to confirm the efficacy of this type of reconstruction.
References
ABSTRACT
Complex glenoid bone deformities present the treating surgeon with a complex reconstructive challenge. Although glenoid bone loss can be encountered in the primary setting (degenerative, congenital, post-traumatic), severe glenoid bone loss is encountered in most revision total shoulder arthroplasties. Severe glenoid bone loss is treated with various techniques including hemiarthroplasty, eccentric reaming, and glenoid reconstruction with bone autografts and allografts. Despite encouraging short- to mid-term results reported with these reconstruction techniques, the clinical and radiographic outcomes remain inconsistent and the high number of complications is a concern. To overcome this problem, more recently augmented components and patient specific implants were introduced. Using the computer-aided design and computer-aided manufacturing technology patient-specific implants have been created to reconstruct the glenoid vault in cases of severe glenoid bone loss.
In this article we describe a patient specific glenoid implant, its indication, technical aspects and surgical technique, based on the author's experience as well as a review of the current literature on custom glenoid implants.
