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A novel approach to investigating the tendinous and capsular layers of the rotator cuff complex : A biomechanical study
Dissertation (MSc)--University of Pretoria, 2019.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2020
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| _version_ | 1867613660625502208 |
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| access_status_str | Open Access |
| author2 | Keough, Natalie |
| author_browse | Keough, Natalie |
| author_facet | Keough, Natalie |
| collection | Thesis |
| dc_rights_str_mv | © 2020 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc)--University of Pretoria, 2019. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/76826 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:39:41.079Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/76826 A novel approach to investigating the tendinous and capsular layers of the rotator cuff complex : A biomechanical study Keough, Natalie JESSICAYCRONJE@GMAIL.COM Mogale, Nkhensani Cronjé, Jessica Yvonne UCTD Rotator cuff RC elastic modulus modulus of elasticity|extension Health sciences theses SDG-03 SDG-03: Good health and well-being Health sciences theses SDG-09 SDG-09: Industry, innovation and infrastructure Dissertation (MSc)--University of Pretoria, 2019. Rotator cuff (RC) muscle insertion was previously thought to consist of singular, individual tendons inserting onto predefined areas on the greater and lesser tuberosities. However, more recent publications describe the RC muscle tendons as forming a singular insertion across the tuberosities, consisting of both tendinous and capsular portions. Orthopaedic surgeons are now considering these two layers in their surgical approach and treatment plans; therefore this study aimed to test and compare the elastic modulus and maximum load to failure for both tendinous and capsular layers taken from supraspinatus (SS), infraspinatus (IS) and subscapularis (SC). Fourteen (n = 14) fresh/frozen arms were used in this study. Each RC muscle was reverse dissected and trimmed to a 2 x 2cm strip, which was separated into its two layers, still attached to the humerus. An Instron 1342 with a 1kN load cell was used to place the samples under tensile testing till failure (Newtons/N). Accompanying Integrated Design Tools (IDT) NX8-S2 cameras captured images for full-field strain measurements with the Image Systems TEMA software package through digital image correlation (DIC). SS, IS, and SC tendinous layers yielded higher average elastic moduli readings (72.34 MPa, 67.04 MPa, and 59.61 MPa respectively) compared to their capsular components (27.38 MPa, 32.45 MPa, and 41.49 MPa respectively). Likewise, the tendinous layers for SS, IS and SC all showed higher average loads to failure (252.74 N, 356.27 N and 385.94 N, respectively) when compared to the capsular layers (211.21 N, 168.54 N and 281.74 N, respectively). These biomechanical differences need to be taken into account during surgical repair owing to the fact that, should these layers be repaired as one singular structure, it may place the weaker less elastic, capsular layer under more strain, possibly leading to either re-tear complications or reduced postoperative healing and functionality. Thus, based on the results, it is recommended that surgeons consider and repair each layer independently for better postoperative biomechanical integrity. em2025 Anatomy MSc Unrestricted SDG-03: Good health and well-being SDG-09: Industry, innovation and infrastructure 2020-11-04T15:10:00Z 2020-11-04T15:10:00Z 20/04/24 2019 Dissertation Cronjé, JY 2019, A novel approach to investigating the tendinous and capsular layers of the rotator cuff complex : A biomechanical study, MSc Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/76826> A2020 http://hdl.handle.net/2263/76826 en © 2020 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Rotator cuff RC elastic modulus modulus of elasticity|extension Health sciences theses SDG-03 SDG-03: Good health and well-being Health sciences theses SDG-09 SDG-09: Industry, innovation and infrastructure A novel approach to investigating the tendinous and capsular layers of the rotator cuff complex : A biomechanical study |
| title | A novel approach to investigating the tendinous and capsular layers of the rotator cuff complex : A biomechanical study |
| title_full | A novel approach to investigating the tendinous and capsular layers of the rotator cuff complex : A biomechanical study |
| title_fullStr | A novel approach to investigating the tendinous and capsular layers of the rotator cuff complex : A biomechanical study |
| title_full_unstemmed | A novel approach to investigating the tendinous and capsular layers of the rotator cuff complex : A biomechanical study |
| title_short | A novel approach to investigating the tendinous and capsular layers of the rotator cuff complex : A biomechanical study |
| title_sort | novel approach to investigating the tendinous and capsular layers of the rotator cuff complex a biomechanical study |
| topic | UCTD Rotator cuff RC elastic modulus modulus of elasticity|extension Health sciences theses SDG-03 SDG-03: Good health and well-being Health sciences theses SDG-09 SDG-09: Industry, innovation and infrastructure |
| url | http://hdl.handle.net/2263/76826 |