97318 20230519145346.0 doi 10.1016/j.jse.2020.07.007 sideral 121302 ART-2021-121302 eng Pitocchi, Jonathan Automated muscle elongation measurement during reverse shoulder arthroplasty planning 2021 Access copy available to the general public Unrestricted Background: Adequate deltoid and rotator cuff elongation in reverse shoulder arthroplasty is crucial to maximize postoperative func- tional outcomes and to avoid complications. Measurements of deltoid and rotator cuff elongation during preoperative planning can sup- port surgeons in selecting a suitable implant design and position. Therefore, this study presented and evaluated a fully automated method for measuring deltoid and rotator cuff elongation. Methods: Complete scapular and humeral models were extracted from computed tomography scans of 40 subjects. First, a statistical shape model of the complete humerus was created and evaluated to identify the muscle attachment points. Next, a muscle wrapping algorithm was developed to identify the muscle paths and to compute muscle lengths and elongations after reverse shoulder arthroplasty implantation. The accuracy of the muscle attachment points and the muscle elongation measurements was evaluated for the 40 subjects by use of both complete and artificially created partial humeral models. Additionally, the muscle elongation measurements were evaluated for a set of 50 arthritic shoul- der joints. Finally, a sensitivity analysis was performed to evaluate the impact of implant positioning on deltoid and rotator cuff elongation. Results: Forthecompletehumeralmodels,allmuscleattachmentpointswereidentifiedwithamedianerror<3.5mm.Forthepartialhumeral models, the errors on the deltoid attachment point largely increased. Furthermore, all muscle elongation measurements showed an error < 1 mm for 75% of the subjects for both the complete and partial humeral models. For the arthritic shoulder joints, the errors on the muscle elongation mea- surements were <2 mm for 75% of the subjects. Finally, the sensitivity analysis showed that muscle elongations were affected by implant positioning. Discussion: This study presents an automated method for accurately measuring muscle elongations during preoperative planning of shoulder arthroplasty. The results show that the accuracy in measuring muscle elongations is higher than the accuracy in indicating the muscle attachment points. Hence, muscle elongation measurements are insensitive to the observed errors on the muscle attachment points. Related to this finding, muscle elongations can be accurately measured for both a complete humeral model and a partial humeral model. Because the presented method also showed accurate results for arthritic shoulder joints, it can be used during preoperative shoulder arthroplasty planning, in which typically only the proximal humerus is present in the scan and in which bone arthropathy can be present. As the muscle elongations are sensitive to implant positioning, surgeons can use the muscle elongation measurements to refine their surgical plan. info:eu-repo/grantAgreement/EC/H2020/722535/EU/Predictive models and simulations in bone regeneration: a multiscale patient-specific approach/CuraBone This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 722535-CuraBone info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 3.507 2021 ORTHOPEDICS 24 / 86 = 0.279 2021 Q2 T1 SURGERY 56 / 214 = 0.262 2021 Q2 T1 SPORT SCIENCES 32 / 88 = 0.364 2021 Q2 T2 1.511 2021 Medicine (miscellaneous) 2021 Q1 Surgery 2021 Q1 Orthopedics and Sports Medicine 2021 Q1 5.7 2021 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Plessers, Katrien Wirix-Speetjens, Roel Debeer, Philippe van Lenthe, G. Harry Jonkers, Ilse Pérez Ansón, María de los Ángeles Universidad de Zaragoza (orcid)0000-0002-2901-4188 Vander Sloten, Jos 5004 605 Universidad de Zaragoza Dpto. Ingeniería Mecánica Área Mec.Med.Cont. y Teor.Est. 30, 3 (2021), P561-571 J. Shoulder Elbow Surg. Journal of shoulder and elbow surgery 1058-2746 1623586 http://zaguan.unizar.es/record/97318/files/texto_completo.pdf Versión publicada 47739 http://zaguan.unizar.es/record/97318/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:97318 articulos driver 2023-05-18-13:21:26 ARTICLE