CompletedNot Applicable

Effects of a Squatting With Hip Adduction in Patients With Patellofemoral Pain Syndrome

Taiwan30 participantsStarted 2017-11-27

Plain-language summary

An imbalance in the activation and onset time of the vastus medialis oblique (VMO) and vastus lateralis (VL) muscles may be one of the primary causes of PFPS. Several studies have discussed various exercise methods believed to selectively contract the (VMO) muscle for treating patellofemoral pain syndrome. VMO activity is higher during static closed-chain tasks combined with hip adduction, indicating that performing hip adduction exercises may selectively strengthen the VMO muscle.

Who can participate

Age range

20 Years – 50 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Age 20-50 years. * Pain around the patella at least two of the following activities¬-standing up after prolonged sitting, going up and down the stairs, running, jumping, squatting, kneeling, and high-angle knee flexion for a long time. * Knee joint pain for ≥3 months. * Pain level of ≥ 30 mm on a 100-mm visual analog scale (VAS). Exclusion Criteria: * Had a history of patellar subluxation, dislocation, or knee surgery. * Had central or peripheral neurological pathology. * Had an obvious knee joint deformity or lower extremity malalignment. * Experienced severe knee joint pain (VAS) score \> 80 mm), or received nonsteroidal anti-inflammatory drugs, injections, or physical therapy within the past 3 months.

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Amplitudes of muscle activation (unit: %MVC)

Timeframe: pre-intervention and after 8-week intervention

VMO/VL ratio

Timeframe: pre-intervention and after 8-week intervention

Onset time (unit: msec)

Timeframe: pre-intervention and after 8-week intervention

VMO - VL (unit: msec)

Timeframe: pre-intervention and after 8-week intervention

Q angle (unit: degree)

Timeframe: pre-intervention and after 8-week intervention

The visual analogue scale (VAS) (unit: mm)

Timeframe: pre-intervention and after 8-week intervention

patellofemoral pain severity scale (PSS) (unit: score)

Timeframe: pre-intervention and after 8-week intervention

Trial details

NCT IDNCT06681961

SponsorChina Medical University Hospital

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2018-11-30

View on ClinicalTrials.gov More PFPS trials

Plain-language summary

Who can participate

Age range

20 Years – 50 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

What they're measuring

Amplitudes of muscle activation (unit: %MVC)

Timeframe: pre-intervention and after 8-week intervention

VMO/VL ratio

Timeframe: pre-intervention and after 8-week intervention

Onset time (unit: msec)

Timeframe: pre-intervention and after 8-week intervention

VMO - VL (unit: msec)

Timeframe: pre-intervention and after 8-week intervention

Q angle (unit: degree)

Timeframe: pre-intervention and after 8-week intervention

The visual analogue scale (VAS) (unit: mm)

Timeframe: pre-intervention and after 8-week intervention

patellofemoral pain severity scale (PSS) (unit: score)

Timeframe: pre-intervention and after 8-week intervention