Validation of a feedback-controlled elbow simulator design: Elbow muscle moment arm measurement

Kuxhaus, L and Schimoler, PJ and Vipperman, JS and Miller, MC (2009) Validation of a feedback-controlled elbow simulator design: Elbow muscle moment arm measurement. Journal of Medical Devices, Transactions of the ASME, 3 (3). ISSN 1932-6181

Preview	PDF Available under License : See the attached license file. Download (721kB) | Preview
	Plain Text (licence) Available under License : See the attached license file. Download (1kB)

Abstract

The Allegheny General Hospital (AGH) elbow simulator was designed to be a closed-loop physiologic simulator actuating movement in cadaveric elbow specimens via servoelectric motors that attach to the tendons of the biceps, brachialis, triceps, and pronator teres muscles. A physiologic elbow simulator should recreate the appropriate moment arms throughout the elbow's range of motion. To validate this design goal, muscle moment arms were measured in three cadaver elbow specimens using the simulator. Flexion-extension moment arms of four muscles were measured at three different pronation/supination angles: fully pronated, fully supinated, and neutral; pronation-supination moment arms were measured at three different flexion-extension angles: 30 deg, 60 deg, and 90 deg. The tendon-displacement method was used in these measurements, in which the ratio of the change in musculotendon length to the change in joint angle was computed. The numeric results compared well with those previously reported; the biceps and pronator teres flexion-extension moment arms varied with pronation-supination position, and vice versa. This is one of the few reports of both flexion-extension and pronation-supination moment arms in the same specimens, and represents the first use of closed-loop feedback control in the AGH elbow simulator. The simulator is now ready for use in clinical studies such as in analyses of radial head replacement and medial ulnar collateral ligament repair. Copyright © 2009 by ASME.

---

Share

Citation/Export:	Select format... Citation - Text Citation - HTML Endnote BibTex Dublin Core OpenURL MARC (ISO 2709) METS MODS EP3 XML Reference Manager Refer
Social Networking:	Share |

---

Details

Item Type:	Article
Status:	Published
Creators/Authors:	Creators Email Pitt Username ORCID Kuxhaus, L Schimoler, PJ Vipperman, JS jsv@pitt.edu JSV 0000-0001-5585-954X Miller, MC mcmllr@pitt.edu MCMLLR 0000-0002-4902-3452
Date:	1 September 2009
Date Type:	Publication
Journal or Publication Title:	Journal of Medical Devices, Transactions of the ASME
Volume:	3
Number:	3
DOI or Unique Handle:	10.1115/1.3191725
Schools and Programs:	Swanson School of Engineering > Mechanical Engineering and Materials Science
Refereed:	Yes
ISSN:	1932-6181
Date Deposited:	21 Sep 2018 19:16
Last Modified:	17 Dec 2020 16:55
URI:	http://d-scholarship.pitt.edu/id/eprint/35339

---

Metrics

Monthly Views for the past 3 years

Plum Analytics

Altmetric.com

---

Actions (login required)

View Item