NCT03069547

Brief Summary

Patellofemoral Pain (PFP) is a common knee problem, primarily affecting adolescents and young adults. PFP is characterised by significant retropatellar and/or peripatellar pain and impairment of function and quality of daily life. Exercise therapy is unequivocally recommended as a core component of the management of PFP. Different exercise types (e.g. quadriceps strengthening, hip strengthening and functional/neuromuscular exercises) have been investigated, with knee and hip strengthening exercises as the most common and recommended types. These exercises approaches produce similar small to moderate effects on pain and physical function. However, the PFP population is very heterogeneous and "one-size-fits-all"-approaches presumably are sub-optimal because the heterogeneity is ignored. The heterogeneity probably explains the overall limited beneficial effects of exercise, and the lack of differences in direct comparisons of different exercise types. In that sense, it is not unlikely that certain patient characteristics may predict outcome success of either a hip training program or a training program that focus on the quadriceps but this remains to be shown. This study has two aims:

  1. 1.To assess the comparative effectiveness of two different exercise programs (Quadricep Exercise \[QE\] vs. Hip Exercise \[HE\]) on self-reported pain and function in individuals with PFP.
  2. 2.To explore candidate patient characteristics that predict differential responses to the two exercise programs (QE vs HE) on self-reported pain and physical function in individuals with PFP.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
200

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Apr 2017

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

February 22, 2017

Completed
9 days until next milestone

First Posted

Study publicly available on registry

March 3, 2017

Completed
1 month until next milestone

Study Start

First participant enrolled

April 10, 2017

Completed
4.7 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 3, 2021

Completed
3 months until next milestone

Study Completion

Last participant's last visit for all outcomes

March 3, 2022

Completed
Last Updated

August 2, 2022

Status Verified

August 1, 2022

Enrollment Period

4.7 years

First QC Date

February 22, 2017

Last Update Submit

August 1, 2022

Conditions

Outcome Measures

Primary Outcomes (1)

  • Change from baseline in the KUJALA scoring questionnaire

    The Kujala Patellofemoral Scale - sometimes called the anterior knee pain scale - is disease specific validated disability scale ranging from 0 (complete disability) to 100 (fully functional). It is a 13-item self-report questionnaire that documents response to 6 activities (walking, running, jumping, climbing stairs, squatting, and sitting for prolonged periods with knees bent), as well as symptoms such as limp, inability to weight bear, swelling, abnormal patellar movement, muscle atrophy, and limitations in knee flexion.

    week 12 and 26

Secondary Outcomes (6)

  • Change from baseline in the KOOS questionnaire

    Week 12 and 26

  • Change fom baseline in isometric muscle strength of hip abductors, hip external rotators, hip extensors, and quadriceps

    Week 12

  • Change fom baseline in the Dynamic Assessment of Pain test

    Week 12

  • Change fom baseline in the Pain Self-Efficacy Questionnaire

    Week 12 and 26

  • Change fom baseline in the EuroQoL Questionnaire

    Week 12 and 26

  • +1 more secondary outcomes

Other Outcomes (12)

  • Candidate prognostic factor: Previous treatments received

    Baseline (week 0)

  • Candidate prognostic factor: Presence of bilateral knee pain

    Baseline (week 0)

  • Candidate prognostic factor: Presence of pain in other lower extremity joints (feet, ankles, hips)

    Baseline (week 0)

  • +9 more other outcomes

Study Arms (2)

Quadriceps Exercise program

ACTIVE COMPARATOR

The Quadricepts Exercise (QE) program runs for 12 weeks, with exercise sessions 3 times per week. Each training session is scheduled to last approximately 30 minutes. The exercise program is home based with monthly supervision visits at the clinic.

Other: Quadriceps Exercise program

Hip Exercise program

ACTIVE COMPARATOR

The Hip Exercise (HE) program runs for 12 weeks, with exercise sessions 3 times per week. Each training session is scheduled to last approximately 30 minutes. The exercise program is home based with monthly supervision visits at the clinic.

Other: Hip Exercise program

Interventions

The exercise program is initiated at an individual clinical visit. An experienced physiotherapist introduces the participant to the exercise program and provides instructions to the individual exercises. An experienced physiotherapist provides the monthly supervision visits. The program details can be requested rom the responsible party. In brief the QE-program consists of: \- A short warm-up and 3 specific exercises for the quadriceps muscle Progression of the exercise intensity is done by adding (additional) external loads, such as elastic rubber bands, free weights, etc.

Quadriceps Exercise program

The exercise program is initiated at an individual clinical visit. An experienced physiotherapist introduces the participant to the exercise program and provides instructions to the individual exercises. An experienced physiotherapist provides the monthly supervision visits. The program details be requested rom the responsible party. In brief the HE-program consists of: \- A short warm-up and 3 specific exercises for the hip abductor and extensor muscles Progression of the exercise intensity is done by adding (additional) external loads, such as elastic rubber bands, body weight etc.

Hip Exercise program

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • A clinical diagnosis of PFP in at least one knee
  • Visual analogue score rating of pain during activities of daily living during the previous week at a minimum of 3 on a 10 cm scale.
  • Insidious onset of symptoms unrelated to trauma and persistent for at least 4 weeks.
  • Pain in the anterior knee associated with at least 3 of the following:
  • During or after activity
  • Prolonged sitting
  • Stair ascent or descent
  • Squatting

You may not qualify if:

  • Meniscal or other intra-articular injury
  • Cruciate or collateral ligament laxity or tenderness
  • Patellar tendon, iliotibial band, or pes anserine tenderness
  • Osgood-Schlatter or Sinding-Larsen-Johansson syndrome
  • History of recurrent patellar subluxation or dislocation
  • History of surgery to the knee joint
  • History of head injury or vestibular disorder within the last 6 months

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Bispebjerg Hospital, Department of Physical and Occupational Therapy

Copenhagen, 2400, Denmark

Location

Related Publications (3)

  • Hansen R, Rathleff MS, Brushoj C, Magnusson SP, Henriksen M. Differential Effects of Quadriceps and Hip Muscle Exercises for Patellofemoral Pain: A Secondary Effect Modifier Analysis of a Randomized Trial. J Orthop Sports Phys Ther. 2024 Nov;54(11):732-742. doi: 10.2519/jospt.2024.12503.

  • Jorgensen JEV, Rathleff MS, Henriksen M, Brushoj C, Hansen R. Physical Therapists' Prognosis of Outcomes After a Hip or Quadriceps Exercise Intervention in Patients With Patellofemoral Pain: A Secondary Analysis of a Randomized Trial. J Orthop Sports Phys Ther. 2024 Aug;54(8):541-550. doi: 10.2519/jospt.2024.12258.

  • Hansen R, Brushoj C, Rathleff MS, Magnusson SP, Henriksen M. Quadriceps or hip exercises for patellofemoral pain? A randomised controlled equivalence trial. Br J Sports Med. 2023 Oct;57(20):1287-1294. doi: 10.1136/bjsports-2022-106197. Epub 2023 May 3.

MeSH Terms

Conditions

Patellofemoral Pain Syndrome

Condition Hierarchy (Ancestors)

Joint DiseasesMusculoskeletal Diseases

Study Officials

  • Marius Henriksen, PT, PhD

    Department of Physical and Occupational Therapy, Bispebjerg-Frederiksberg Hospital

    STUDY CHAIR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
INVESTIGATOR, OUTCOMES ASSESSOR
Masking Details
Investigators, study coordinators, outcome assessors, clinical staff, study staff, and other personnel directly involved in the clinical activities of the study, will be blinded to the group allocation. Participants and providers of the exercise delivery are not blinded to the group allocation.
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: Eligible participants will be randomly assigned (1:1) to one of the two following groups: * QE - quadriceps exercise program * HE - hip exercise program
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Professor

Study Record Dates

First Submitted

February 22, 2017

First Posted

March 3, 2017

Study Start

April 10, 2017

Primary Completion

December 3, 2021

Study Completion

March 3, 2022

Last Updated

August 2, 2022

Record last verified: 2022-08

Data Sharing

IPD Sharing
Will share

All IPD will be shared once the study is finalised and results pulished. IPD can be obtained by contacting the responsible party

Locations