Date of Award
1-1-2019
Document Type
Masters Thesis
Degree Name
M.S.
Organizational Unit
Daniel Felix Ritchie School of Engineering and Computer Science, Mechanical and Materials Engineering
First Advisor
Kevin B. Shelburne, Ph.D.
Second Advisor
Peter Laz, Ph.D.
Third Advisor
Bradley Davidson, Ph.D.
Keywords
Anatomic total shoulder arthroplasty, Biplane radiography, Individuals, Kinematics, Reverse total shoulder arthroplasty
Abstract
Total Shoulder Arthroplasty (TSA) is a surgery which replaces the shoulder joint, or the interface between the humerus and the scapula glenoid. To test TSA success, most prior research compares patients with TSA to healthy controls. However, the shoulder anthropometry, motion, and musculature of individuals varies widely across the population making it important to assess TSA performance in individuals. The overall goal of this study is to determine if patients with one of two TSA implant designs on one side achieve the same range of motion as their intact side, and if so to find if they compensate using increased scapula rotation over normal humeral motion. Six TSA subjects performed for each shoulder abduction, forward flexion, and internal/external (I/E) humerus rotation with their arm abducted to 0° and 90°, captured as x-ray videos with a Radiography System. Glenohumeral and scapulothoracic kinematics were calculated. Results show that TSA shoulder trends for abduction and flexion lie within the range of healthy standard deviation for both glenohumeral and scapulothoracic elevation. No substantial differences were observed between TSA and healthy shoulders’ overall motion but that the scapula exhibits some compensation in elevation for TSA shoulders, especially in flexion. I/E implanted shoulder results additionally show a deficit compared to intact shoulders, with scapula retraction compensation presenting more strongly with the arm abducted to 0° than at 90°.
Publication Statement
Copyright is held by the author. User is responsible for all copyright compliance.
Rights Holder
Sarah Rose Walden
Provenance
Received from ProQuest
File Format
application/pdf
Language
en
File Size
141 p.
Recommended Citation
Walden, Sarah Rose, "Side-to-Side Comparison of Total Shoulder Arthroplasty and Intact Function in Individuals" (2019). Electronic Theses and Dissertations. 1698.
https://digitalcommons.du.edu/etd/1698
Copyright date
2019
Discipline
Biomechanics, Surgery, Mechanical engineering