The use of a patellar strap in athletes with a jumper’s knee: A pilot study on the effect on symptoms, proprioception and tendon structure

The TOPPRO 2 study: Tendinopathy of Pain Relieving Orthoses 2

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

NL-OMON

Registry ID

NL-OMON28088

Enrollment

Registered

2014-12-01

Start date

2015-02-01

Completion date

Unknown

Last updated

2025-03-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Jumper's knee

Interventions

Subjects visit the center for sports medicine two times. During the first visit the patellar tendons of the participants are scanned using UTC and all subjects perform three functional tests (10 sin

Eligibility

Inclusion criteria

Inclusion criteria: - Age 18-50 years - Current symptoms of knee pain in the patellar tendon or its patellar or tibial insertion in connection with training and competition in one or both knees - Duration of symptoms for over three months (to exclude acute inflammatory tendon problems and de novo partial ruptures). - Palpation tenderness at the corresponding painful area. - VISA-P score < 80. - Participating athlete - No use of a patellar strap during sports in the week prior to the study.

Exclusion criteria

Exclusion criteria: - Signs or symptoms of other (co-)existing knee pathologies - Use of drugs with a putative effect on patellar tendinopathy in the last year on daily basis or painkillers - Neurologic disorders which might influence pain and propriocepsis - Knee surgery or injection therapy with corticosteroids in the last preceding three months

Design outcomes

Primary

Measure	Time frame
The difference in Visual Analogue Scale (VAS) for pain after ten single leg decline squats between the patellar strap and control condition will be used as the main study outcome in this study.	—

Secondary

Measure	Time frame
The difference in VAS pain score between both conditions (control and strap) during the jump test and the triple hop test are secondary outcomes, as well as the height (m) and distance (m) measured during these tests. In addition, the difference in proprioception (Joint Position Sense expressed by the deviation in millimeters from a marker) between both conditions is also a secondary outcome measure. The difference in percentage of echotypes 1,2,3 and 4 between the follow up UTC measurement (effect of a patellar strap) compared to the baseline UTC measurement (no patellar strap) are also secondary outcomes. Finally, the comfort grade (0-10) of wearing the Genupoint patellar strap is a secondary outcome parameter.	—

Measure

Time frame

The difference in VAS pain score between both conditions (control and strap) during the jump test and the triple hop test are secondary outcomes, as well as the height (m) and distance (m) measured during these tests. In addition, the difference in proprioception (Joint Position Sense expressed by the deviation in millimeters from a marker) between both conditions is also a secondary outcome measure. The difference in percentage of echotypes 1,2,3 and 4 between the follow up UTC measurement (effect of a patellar strap) compared to the baseline UTC measurement (no patellar strap) are also secondary outcomes. Finally, the comfort grade (0-10) of wearing the Genupoint patellar strap is a secondary outcome parameter.

—

Contacts

Public ContactA.J. Vries, de

University Medical Center Groningen (UMCG), Department of Anesthesiology, P.O. Box 30001

a.j.de.vries@anest.umcg.nl+31 (0)50 3616161

Outcome results

None listed

Source: NL-OMON (via WHO ICTRP)