Surgeon-designed patient-specific instrumentation improves glenoid component screw placement for reverse total shoulder arthroplasty in a population with small glenoid dimensions

Autor: Colin Shing-Yat Yung, Christian Fang, Evan Fang, Yuk-Chuen Siu, Dennis King Hang Yee, Kevin Kwun-Hung Wong, Kai-Chung Poon, Matthew Man Fai Leung, Jonathan Wan, Tak-Wing Lau, Frankie Leung
Rok vydání: 2023
Předmět:
Zdroj: International Orthopaedics. 47:1267-1275
ISSN: 1432-5195
0341-2695
Popis: Purpose Glenoid component loosening is a potential complication of reverse total shoulder arthroplasty (rTSA), occurring in part due to lack of adequate screw purchase in quality scapular bone stock. This study was to determine the efficacy of a surgeon-designed, 3D-printed patient-specific instrumentation (PSI) compared to conventional instrumentation (CI) in achieving longer superior and inferior screw lengths for glenoid component fixation. Methods A multi-centre retrospective analysis of patients who underwent rTSA between 2015 and 2020. Lengths of the superior and inferior locking screws inserted for fixation of the glenoid baseplate component were recorded and compared according to whether patients received PSI or CI. Secondary outcomes included operative duration and incidence of complications requiring revision surgery. Results Seventy-three patients (31 PSI vs. 42 CI) were analysed. Average glenoid diameter was 24.5 mm (SD: 3.1) and 81% of patients had smaller glenoid dimensions compared to the baseplate itself. PSI produced significantly longer superior (44.7 vs. 30.7 mm; P P P = 0.229). No patients had radiographic loosening of the glenoid component with an average of 2-year follow-up. Conclusion PSI facilitates longer superior and inferior screw placement in the fixation of the glenoid component for rTSA. With sufficient training, PSI can be designed and implemented by surgeons themselves.
Databáze: OpenAIRE
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