Patellar Tendon Load Progression during Rehabilitation Exercises: Implications for the Treatment of Patellar Tendon Injuries

SCATTONE SILVA, RODRIGO; SONG, KE; HULLFISH, TODD J.; SPRAGUE, ANDREW; SILBERNAGEL, KARIN GRÄVARE; BAXTER, JOSH R.

doi:10.1249/mss.0000000000003323

Cited by 5 publications

References 55 publications

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Exploring the Perceived Difficulty and Importance of Lower Limb Physical Activities for People With and Without Osteoarthritis: A Discrete Choice Experiment

Pierobon,

Taylor,

Siegert

et al. 2024

Musculoskeletal Care

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BackgroundMany outcome measures used in lower‐limb osteoarthritis (OA) present ceiling effects. This compromises the ability of those measures to accurately assess people with higher levels of physical function. Understanding of the difficulty and importance of physical activities would enable the inclusion of challenging and meaningful activities in new outcome measures.PurposeTo explore the perceived difficulty and importance of 40 physical activities by people with and without lower limb OA.MethodsWe conducted a discrete choice experiment (DCE) using 1000minds software. We recruited people with and without OA using OA databases and social media. Participants were asked to complete two comparison tasks, first about the relative difficulty and then about the importance of the physical activities. Pairwise comparisons were presented (i.e., two alternatives at a time), and participants selected the most difficult/important.ResultsWe analysed data from 613 participants, of whom 215 had OA. Rankings of difficulty and importance were obtained. No major differences existed in the difficulty ranking between people with and without OA. People with OA rated activities like kneeling and balancing activities as more important than those without OA. In contrast, people without OA rated jogging, squatting, and running as more important than those with OA. Challenging activities were generally rated as less important.ConclusionsA DCE ranked 40 different lower limb physical activities in terms of difficulty and importance. Challenging activities were found to be less important than easier ones. People with OA gave more importance to easier activities than people without OA.

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Exploring the Perceived Difficulty and Importance of Lower Limb Physical Activities for People With and Without Osteoarthritis: A Discrete Choice Experiment

Pierobon,

Taylor,

Siegert

et al. 2024

Musculoskeletal Care

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Patients with Achilles tendinopathy use compensation strategies to reduce tendon load during rehabilitation exercises

Deroost,

Petrella,

Mylle

et al. 2025

Clinical Biomechanics

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Patients with Achilles Tendinopathy use compensation strategies to reduce tendon load during rehabilitation exercises

Deroost,

Petrella,

Mylle

et al. 2024

Preprint

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Purpose. This study aimed to determine differences in the Achilles tendon loading during rehabilitation exercises for Achilles tendinopathy (AT), and the ranking of these exercises in patients with AT and controls. Methods. Sixteen patients with AT (5F & 11M, 44.1 +/- 12.9yr) and sixteen controls (4F & 12M, 39.4 +/- 15.6yr) performed rehabilitation exercises while 3D motion and ground reaction forces were measured. Musculoskeletal modeling was used to compute joint kinematics and triceps surae muscle forces. Individual triceps surae muscle forces were summed to estimate Achilles tendon load. Subsequently, peak Achilles tendon loading, loading impulse, loading rate, loading indexes (combining the different loading parameters), and ankle and knee angles at the time of peak loading were determined. Results. Patients with AT have a significantly reduced peak loading of the Achilles tendon compared to controls during the exercises with the highest peak loading: unilateral heel drop with flexed knee (3.66 +/- 0.90BW [AT] vs. 4.65 +/- 1.10BW [Control], p=0.003, d=0.979) and walking (3.37 +/- 0.49BW [AT] vs. 3.68 +/- 0.33BW [Control], p=0.044, d=0.742). Furthermore, ankle dorsiflexion and knee flexion were reduced during unilateral heel drop with a flexed knee for the AT group. The ranking of exercises by peak loading or loading index was similar for people with and without AT. However, the ranking of exercises depends on the parameter used to define Achilles tendon loading. Conclusion. During the highest load-imposing exercises, patients with AT employ compensatory strategies to reduce the load on their Achilles tendon. Clear instructions and feedback on the patient's performance are crucial as altered exercise execution influences Achilles tendon loading.

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Patellar Tendon Load Progression during Rehabilitation Exercises: Implications for the Treatment of Patellar Tendon Injuries

Cited by 5 publications

References 55 publications

Exploring the Perceived Difficulty and Importance of Lower Limb Physical Activities for People With and Without Osteoarthritis: A Discrete Choice Experiment

Exploring the Perceived Difficulty and Importance of Lower Limb Physical Activities for People With and Without Osteoarthritis: A Discrete Choice Experiment

Patients with Achilles tendinopathy use compensation strategies to reduce tendon load during rehabilitation exercises

Patients with Achilles Tendinopathy use compensation strategies to reduce tendon load during rehabilitation exercises

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