Summary & Purpose

Patellofemoral joint (PFJ) pain is an incessant musculoskeletal disorder underreported in older adults. This study examined the effect of age and surface on the magnitude and waveform of PFJ stress during a stair ascent task. 12 healthy young adults and 12 healthy older adults completed a stair ascent and descent task on a normal, uneven, and slick surface. During stair ascent age impacted PFJ stress waveform (p < 0.001), but not magnitude, as older adults exhibited greater PFJ stress from 55 to 59% and 74 to 84% of stance (p < 0.037). The increase in older adults PFJ stress late in stance may be attributed to a later peak PFJ stress (p = 0.002) and larger PFJ stress-time integral (p = 0.003) than young adults. Surface also impacted PFJ waveform (p < 0.001). On the uneven surface during stair ascent, PFJ stress was smaller from 9 to 24%, but greater from 75 to 88% of stance (both: p < 0.001), and PFJ stress-time integral (p = 0.010) was greater than normal surface. A significant age by surface interaction was observed for time of peak PFJ stress (p = 0.041). On the uneven surface, older adults exhibited a later peak PFJ stress compared to young adults (p = 0.008), and later peak PFJ stress compared to normal and slick surface (both: p = 0.014). For stair descent, age impacted PFJ contact area range (p = 0.034) and peak knee flexion angle (= 0.022), but no other PFJ stress measure. On the uneven surface during stair descent, partipicants exhibited greater PFJ stress-time integral, reaction force impulse, and mean contact area (all: p < 0.05) compared to the slick surface. Surface also impacted PFJ stress waveform during stair descent, where participants exhibited greater stress from 0 to 16% of stance but smaller stress from 98 to 100% of stance on the uneven compared to slick surfaces. Older adults may be more likely to develop PFJ pain, as they exhibited larger and later PFJ stress, particularly when navigating an uneven surface. When navigating the uneven surface, all participants exhibited knee biomechanics, including larger PFJ stress in terminal stance and greater PFJ stress-time integral that may increase overall joint stress and increases risk of developing PFJ pain.

Author Identifier

Clare K. Fitzpatrick, ORCiD: 0000-0002-8200-9353

Tyler N. Brown, ORCiD: 0000-0001-8982-2526

Date of Publication or Submission

8-22-2024

DOI

https://doi.org/10.18122/cobr_data.5.boisestate

Funding Citation

This study was supported by grants from the NIH National Institute on Aging (R15AG059655) and NIH Institutional Development Awards (IDeA) from the National Institute of General Medical Sciences (P20GM109095, P20GM148321, P20GM103408), and a fellowship from the Boise State University Graduate College.

Single Dataset or Series?

Series

Data Format

*.csv; *.txt

File Size

195 KB

Data Attributes

These data files contain participant-based means for discrete knee biomechanics related to patellofemoral joint stress for young (18 to 25 years) and older adults (over 65 years) during during a stair ascent and descent tasks over normal, slick and uneven surfaces as well as stance phase patellofemoral joint stress waveform data for each participant.

Time Period

2018-2020

Privacy and Confidentiality Statement

Boise State is explicitly compliant with federal and state laws surrounding data privacy including the protection of personal financial information through the Gramm-Leach-Bliley Act, personal medical information through HIPAA, HITECH and other regulations. All human subject data (e.g., surveys) has been collected and managed only by personnel with adequate human subject protection certification.

Use Restrictions

Users are free to share, copy, distribute and use the dataset; to create or produce works from the dataset; to adapt, modify, transform and build upon the dataset as long as the user attributes any public use of the dataset, or works produced from the dataset, referencing the author(s) and DOI link. For any use or redistribution of the dataset, or works produced from it, the user must make clear to others the license of the dataset and keep intact any notices on the original dataset.

Disclaimer of Warranty

BOISE STATE UNIVERSITY MAKES NO REPRESENTATIONS ABOUT THE SUITABILITY OF THE INFORMATION CONTAINED IN OR PROVIDED AS PART OF THE SYSTEM FOR ANY PURPOSE. ALL SUCH INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. BOISE STATE UNIVERSITY HEREBY DISCLAIMS ALL WARRANTIES AND CONDITIONS WITH REGARD TO THIS INFORMATION, INCLUDING ALL WARRANTIES AND CONDITIONS OF MERCHANTABILITY, WHETHER EXPRESS, IMPLIED OR STATUTORY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT.

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THE INFORMATION PROVIDED BY THE SYSTEM COULD INCLUDE TECHNICAL INACCURACIES OR TYPOGRAPHICAL ERRORS. CHANGES ARE PERIODICALLY ADDED TO THE INFORMATION HEREIN. COMPANY AND/OR ITS RESPECTIVE SUPPLIERS MAY MAKE IMPROVEMENTS AND/OR CHANGES IN THE PRODUCT(S) AND/OR THE PROGRAM(S) DESCRIBED HEREIN AT ANY TIME, WITH OR WITHOUT NOTICE TO YOU.

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