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Learn about Sinding-Larsen–Johansson

Free parent's guide

The parent's guide to Sinding-Larsen–Johansson

Help settle front-of-knee symptoms and support your young athlete back towards confident jumping and sprinting.

  • How to tell SLJ apart from Osgood–Schlatter
  • The tendon-loading routine that builds resilience
  • Smart load management for jumping sports
  • Mobility work for tight quads and weak glutes
  • Signs it's time for a personalised rehab plan
Clinician-written 8-page PDF Instant download

Free guide

The parent's guide to Sinding-Larsen–Johansson

An 8-page PDF: what it is, what to do this week, when to worry, and the first 5 things to change at home.

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Sound familiar?

If your young athlete is dealing with this…

Sharp pain at the bottom of the kneecap
Struggling on stairs and after sitting
Pain that keeps returning whenever sport resumes

This free guide gives you a clear, evidence-based starting point so you can take action this week, without the guesswork.

What's inside the guide

A focused, no-fluff resource you can read in 15 minutes and act on the same day.

  • How to tell SLJ apart from Osgood–Schlatter
  • The tendon-loading routine that builds resilience
  • Smart load management for jumping sports
  • Mobility work for tight quads and weak glutes
  • Signs it's time for a personalised rehab plan
"Finally a plan built for a growing body. We knew exactly what to do, and he was working back towards full training within weeks."

Parent of an academy footballer

Want the full 8–12 plan?

Once you've read the guide, our 6-week template programmes and personalised online rehab can help support your athlete's return to sport.

Plans launching soon

Other free guides

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References

The research and guidance we drew on when writing this guide.

  1. Arnaiz, J., Piedra, T., de Lucas, E.M., et al. (2011) 'Imaging findings of lower limb apophysitis', American Journal of Roentgenology, 196(3), pp. W316-W325.
  2. Gaida, J.E. and Cook, J. (2011) 'Treatment options for patellar tendinopathy: critical review', Current Sports Medicine Reports, 10(5), pp. 255-270.
  3. Ladenhauf, H.N., Seitlinger, G. and Green, D.W. (2020) 'Osgood-Schlatter disease: a 2020 update of a common knee condition in children', Current Opinion in Pediatrics, 32(1), pp. 107-112.
  4. Lloyd, R.S., Cronin, J.B., Faigenbaum, A.D., et al. (2016) 'National Strength and Conditioning Association position statement on long-term athletic development', Journal of Strength and Conditioning Research, 30(6), pp. 1491-1509.
  5. Neuhaus, C., Appenzeller-Herzog, C. and Faude, O. (2021) 'A systematic review on conservative treatment options for Osgood-Schlatter disease', Physical Therapy in Sport, 49, pp. 178-187.
  6. Peck, D.M. (1995) 'Apophyseal injuries in the young athlete', American Family Physician, 51(8), pp. 1891-1895.
  7. Rathleff, M.S., Winiarski, L., Krommes, K., et al. (2020) 'Activity modification and knee strengthening for Osgood-Schlatter disease: a prospective cohort study', Orthopaedic Journal of Sports Medicine, 8(4), 2325967120911106.
  8. van Ark, M., Docking, S.I., van den Akker-Scheek, I., et al. (2016) 'Does the adolescent patellar tendon respond to 5 days of cumulative load during a volleyball tournament?', Scandinavian Journal of Medicine and Science in Sports, 26(2), pp. 189-196.