Patient-specific Guides Using 3-dimensional Reconstruction Provide Accuracy and Reproducibility in Reverse Total Shoulder Arthroplasty
10.5397/cise.2019.22.1.16
- Author:
Jong Pil YOON
1
;
Dong Hyun KIM
;
Jae Wook JUNG
;
Chang Hwa LEE
;
Seunggi MIN
;
Hyun Joo LEE
;
Hee June KIM
Author Information
1. Department of Orthopaedic Surgery, Kyungpook National University Hospital, Daegu, Korea. jpyoon@knu.ac.kr
- Publication Type:Original Article
- Keywords:
Reverse total shoulder arthroplasty;
Patient-specific guide;
Glenoid component;
Humeral component;
Positioning
- MeSH:
Arthroplasty;
Cadaver;
Humerus;
Shoulder
- From:Clinics in Shoulder and Elbow
2019;22(1):16-23
- CountryRepublic of Korea
- Language:English
-
Abstract:
BACKGROUND: We aimed to evaluate whether the use of our novel patient-specific guide (PSG) with 3-dimensional reconstruction in reverse total shoulder arthroplasty (RTSA) would allow accurate and reliable implantation of the glenoid and humeral components. METHODS: 20 fresh-frozen cadaveric shoulders were used. The PSG group (n=10) and conventional group (n=10) was evaluated the accuracy and reproducibility of implant positioning between before and after surgery on the computed tomography image. RESULTS: The superoinferior and anteroposterior offset in the glenoid component were 0.42 ± 0.07, 0.50 ± 0.08 in the conventional group and 0.45 ± 0.03, 0.46 ± 0.02 in the PSG group. The inclination and version angles were −1.93° ± 4.31°, 2.27° ± 5.91° and 0.46° ± 0.02°, 3.38° ± 2.79°. The standard deviation showed a smaller difference in the PSG group. The anteroposterior and lateromedial humeral canal center offset in the humeral component were 0.45 ± 0.12, 0.48 ± 0.15 in the conventional group and 0.46 ± 0.59 (p=0.794), 0.46 ± 0.06 (p=0.702) in the PSG group. The PSG showed significantly better humeral stem alignment. CONCLUSIONS: The use of PSGs with 3-dimensional reconstruction reduces variabilities in glenoid and humerus component positions and prevents extreme positioning errors in RTSA.
