Knee Pain, Patellofemoral Pain Syndrome
Conditions
Brief summary
The prevalence of adolescent knee pain is 33%, and patellofemoral pain (PFP) is the most common diagnosis with a nontraumatic onset. The 5-year prognosis of adolescent PFP compared with other types of knee pain is unknown. In 2011, a cohort of 2200 adolescents aged 15 to 19 years answered an online questionnaire on musculoskeletal pain. Of these, 504 reported knee pain, and 153 of these were clinically diagnosed with PFP. Now, after 5 years, the 504 adolescents, as well as 252 randomly selected adolescents who did not report knee pain in 2011, will be contacted again to gain insights into their prognosis.
Interventions
OTHERNo intervention
No intervention
Sponsors
Research Unit for General Practice in Aalborg
University of Southern Denmark
Copenhagen University Hospital, Denmark
Aalborg University
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
15 Years to 19 Years
Healthy volunteers
Yes
Inclusion criteria
From the 504, 153 were diagnosed with PFP, the criteria for which included: \- insidious onset of anterior knee or retropatellar pain for longer than 6 weeks that was provoked by at least 2 of the following: prolonged sitting or kneeling, squatting, running, hopping, or stair climbing; tenderness on palpation of the patella; pain when stepping down; or double-leg squatting.
Exclusion criteria
were: * concomitant injury or pain from the hip, lumbar spine, or other knee structures * self-reported patellofemoral instability * knee joint effusion.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Knee pain during the last week | 5 years | All subjects are asked if they experienced knee pain during the last week |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Frequency of knee pain | 5 years | Frequency of knee pain divided into (almost daily, several times per week, weekly, monthly, rarely, never |
| When did your knee pain resolve | 5 years | — |
| Pain in other regions of the body | 5 years | — |
| Seeking medical attention for your knee pain | 5 years | — |
| Previous treatments for your knee pain | 5 year | — |
| Use of pain medication | 5 years | — |
| Worst pain last week | 5 years | Measured on a numeric rating scale |
| Knee pain during the last 30 days | 5 years | Did you experience knee pain during the last 30 days? |
| Health-related quality of life | 5 years | Measure with the EQ-5D-3L |
| The influence of knee pain on choice of activity level, mood, choice of education and professional career | 5 years | — |
| Physical activity level | 5 years | Measured with the IPAQ |
| Number of sports participation per week | 5 years | — |
| The effect of knee pain on sports participation | 5 years | — |
| Self-reported sleep problems | 5 years | Assessed by asking three questions related to: trouble falling asleep, wake several times per night and trouble staying asleep. |
| Knee Injury and Osteoarthritis Outcome score | 5 years | — |
Outcome results
None listed