Johnson, Camille
(2025)
Characterizing Healthy Hip Arthrokinematics and Morphology Utilizing Dynamic Biplane Radiography.
Doctoral Dissertation, University of Pittsburgh.
(Unpublished)
Abstract
Hip pathologies such as femoroacetabular impingement and dysplasia are the two most common causes of hip osteoarthritis and are a significant source of pain and disability across the lifespan. These pathologies can manifest as aberrant hip motion, and while clinical evaluation often utilizes the contralateral limb as a reference for healthy motion, it is unknown how much asymmetry is present in an asymptomatic hip to put kinematic deviations into context. Morphological abnormalities of the femur and pelvis influence both the paths of muscles surrounding the hip (and, in turn, the muscle torque generating capabilities) and the dynamic articulations, or arthrokinematics, between the femoral head and acetabulum. Regional variations in hip coverage and congruency in asymptomatic individuals will provide a potential mechanistic explanation for common patterns of cartilage degeneration in individuals with symptomatic pathology. Describing healthy hip motion among asymptomatic individuals is essential in order for clinicians to quantify normal functional variability and make informed decisions when evaluating pathologic populations.The goal of this project is to utilize dynamic biplane radiography and model-based tracking to analyze in vivo hip motion during walking, squatting, and ascending a step in a cohort of asymptomatic young adults. From this healthy cohort, morphological features of the femur and pelvis were assessed and femoroacetabular kinematics, muscle moment arm lengths, femoroacetabular surface congruency, and dynamic femoral head coverage were described. The results of this study can be used to put aberrant hip biomechanics into context and provide insight into improving restoration of healthy hip motion following surgical intervention or rehabilitation.
The results of this study indicate sex-based differences in hip kinematics during walking and step ascent are small, but kinematic asymmetry is greater during squatting than during walking. Further, the in vivo torque generating capabilities of muscles surrounding the hip change considerably from the standing position to positions encountered during active functional motions. Finally, hip coverage and congruency varies by region and by activity in asymptomatic hips. This study lays the foundation for future work to assess in vivo hip arthrokinematics and effects of symptomatic morphologies during activities of daily living, work-related activities, and high-impact athletic movements.
Share
| Citation/Export: |
|
| Social Networking: |
|
Details
| Item Type: |
University of Pittsburgh ETD
|
| Status: |
Unpublished |
| Creators/Authors: |
|
| ETD Committee: |
|
| Date: |
7 January 2025 |
| Date Type: |
Publication |
| Defense Date: |
28 October 2024 |
| Approval Date: |
7 January 2025 |
| Submission Date: |
29 October 2024 |
| Access Restriction: |
2 year -- Restrict access to University of Pittsburgh for a period of 2 years. |
| Number of Pages: |
171 |
| Institution: |
University of Pittsburgh |
| Schools and Programs: |
Swanson School of Engineering > Bioengineering |
| Degree: |
PhD - Doctor of Philosophy |
| Thesis Type: |
Doctoral Dissertation |
| Refereed: |
Yes |
| Uncontrolled Keywords: |
hip; kinematics; biplane radiography; biomechanics; arthrokinematics |
| Date Deposited: |
07 Jan 2025 21:06 |
| Last Modified: |
07 Jan 2025 21:06 |
| URI: |
http://d-scholarship.pitt.edu/id/eprint/47046 |
Metrics
Monthly Views for the past 3 years
Plum Analytics
Actions (login required)
 |
View Item |
![[img]](https://d-scholarship.pitt.edu/style/images/fileicons/application_pdf.png)
![[feed]](/images/feed-icon-32x32.png){kind=icon}