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30 Knee-related quality-of-life, symptoms, pain, and function in sports/recreational activities in adults with a history of adolescent Osgood-Schlatter: A cross-sectional study
  1. Kasper Krommes1,
  2. Amalie Bjerre Jørgensen1,
  3. Kristian Thorborg1,2,
  4. Lasse Christensen3,
  5. Mathias Fabricius Nielsen1,
  6. Per Hölmich1,2
  1. 1Sports Orthopedic Research Center – Copenhagen, Kettegård Alle 30, Denmark
  2. 2Department of Clinical Medicine, University of Copenhagen, Blegdamsvej 3b 33.5., Denmark
  3. 3Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Campusvej 55, Denmark


Background Osgood-Schlatter is a common growth-related condition in adolescence and can cause persistent symptoms and decrease quality of life. However, little is known about its long-term consequences for knee-related health in adulthood.

Aim To investigate self-reported knee health of adults diagnosed with Osgood-Schlatter during adolescence compared to data from healthy age-matched populations.

Methods We invited all (n=1218) patients aged 18–55y, diagnosed in secondary care with Osgood-Schlatter during 1977–2020, who were invited to complete a web-based survey. Knee-related health was self-reported on the Knee Injury and Osteoarthritis Outcome Score (KOOS) on subscales: Quality-of-Life (QoL), Symptoms, Pain, and Sport/Rec. Responses were grouped according to pre-specified age groups (18–25, 26–35, 36–45, 46–55 years) and compared using a two-tailed students t-test, to age-matched KOOS values derived from a healthy cohort (Williamson AJSM 2015,n=1000).

Results 400 participants completed the survey (mean age 33.8±13y, 65% men). All mean subscale scores were lower for the surveyed group compared to the healthy cohort (p<0.001). Mean differences between the two groups were (female/male): QoL subscale: 36/19 points (18–25y), 25/27 points (26–35y), 26/33 points (36–45y), 25/23 points (46–55y); Symptom subscale: 15/8 points (18–25y), 8/9 points (26–35y), 18/11 points (36–45y), 10/11 points (46–55y); Pain subscale: 19/9 points (18–25y), 11/12 points (26–35y), 13/15 points (36–45y), 16/10 points (46–55y); Sport/Rec subscale: 36/19 points (18–25y), 30/28 points (26–35y), 38/31 points (36–45y), 33/26 points (46–55y).

Conclusion People diagnosed with Osgood-Schlatter in adolescence have significantly decreased self-reported knee health in adulthood when compared to healthy populations. Future studies should address potential long-term consequences of this condition

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