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ORPHA:97335

Osgood-Schlatter disease

low confidenceDisorder

Also known as: Aseptic necrosis of the tibial tubercle · Osteochondrosis of the tibial tubercle

Publications

1,097

Trials

12

Interventional, condition-specific

Researchers

862

Distinct authors in sample

Gene link

—

Readiness

3/6

Stages with a signal

Clinical definition (Orphanet)

Osgood-Schlatter disease is a traction apophysitis of the anterior tibial tubercle described in active adolescents and characterized by gradual onset of pain and swelling of the anterior knee causing limping that usually disappears at the end of growth.

How rare: How common this is has not been clearly measured.

Orphanet entry

Cross-references

Joined from Mondo / Orphanet. MeSH labels may enter searches; UMLS / OMIM / NCIT are stored for reference.

Additional Mondo synonyms (3)

Osgood-Schlatter's disease · aseptic necrosis of the tibial tubercle · osteochondritis of the tibial tubercle

Research stages

Trial readiness signals

Where this condition sits on an open-data research pipeline — not how close a treatment is, and not medical advice. Empty stages often mean “not in these databases under this Mondo ID,” not “impossible.”

3/6 stages with a signal

An interventional trial matched this condition name on ClinicalTrials.gov — see trials below.

  1. Gene identifiedNot found

    No GenCC disease–gene assertion in this build

  2. LiteraturePresent

    1,097 matched papers (571 in last 10 years) Source

  3. Phenotype characterisedPresent

    8 HPO annotations (e.g. Gait disturbance; Knee pain; Abnormal patella morphology) Source

  4. Animal modelNot found

    No Alliance genotype “model of” associations via Monarch for these Mondo IDs

  5. Orphan designationNot found

    No FDA or EMA orphan-drug designation matched this disease via UMLS or preferred name Source

  6. Interventional trialPresent

    12 matched on ClinicalTrials.gov (4 recruiting in sample)

Biology

Genes and phenotypes

Gene–disease validity from GenCC, plus phenotypes and animal models joined from Monarch Initiative via Mondo ID — not a clinical diagnosis aid.

Do we know what causes it?

Not yet — the cause hasn't been pinned down in GenCC.

No strong gene–disease assertion joined for this Orphanet entity.

Phenotypes (Monarch / HPO)

8

Associated phenotypes · MONDO:0004241

  • Gait disturbance
  • Knee pain
  • Abnormal patella morphology
  • Irregular proximal tibial epiphyses
  • Difficulty running

Showing 5 of 8 — open Monarch for the full list.

Animal models (Monarch / Alliance)

None returned for this Mondo ID. Empty here is not proof that no model organism work exists under another name or gene.

Monarch fetch 2026-07-29

Therapies

Designations, candidates, and chemicals

FDA OOPD and EMA orphan designations, Open Targets clinical candidates, and CTD chemical associations via MyDisease.info. These never change the interventional-trial headline.

Orphan designation (FDA · EMA)

No designation matched this disease via UMLS or preferred name on the FDA OOPD mirror or EMA orphan register. Absence here is not proof that none exists under another wording.

Open Targets candidates

No drugs or clinical candidates returned for this Mondo ID on Open Targets.

CTD chemicals (MyDisease.info)

No CTD chemical associations returned for this Mondo ID.

Literature

Is anyone studying this?

1,097

1,097 papers have been published on this condition. That is a real research literature — still far smaller than common diseases (breast cancer: over 700,000 papers). Median papers in the last 10 years for a rare disease in this dataset (publications denominator n=3967) is 59.

1,097 papers since the earliest indexed year in this search — median last-10-year count for a rare disease in this dataset is 59 (publications denominator n=3967).

571 in the last 10 years · low confidence

Phrase hits: 1,097 · MeSH hits: 0

Open Europe PMC search

Who's working on it?

862

Distinct author names in 200 sampled papers — named people below.

Who's working on it?

People publishing on this condition (sampled Europe PMC records). Affiliation is the most recent found in that sample.

  1. 01
    Rathleff MS11 papers · 2025

    Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Denmark; Center for General Practice at Aalborg University, Denmark; Department of Occupational Therapy and Physiotherapy, Aalborg University Hospital, Denmark. Electronic address: https://twitter.com/MichaelRathleff.

    Papers in Europe PMC
  2. 02
    Holden S7 papers · 2026

    Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Denmark; UCD Clinical Research Centre, School of Medicine, University College Dublin, Ireland. Electronic address: siho@hst.aau.dk.

    Papers in Europe PMC
  3. 03
    Olesen JL7 papers · 2025

    Center for General Practice at Aalborg University, Denmark.

    Papers in Europe PMC
  4. 04
    Thorborg K6 papers · 2025

    Department of Clinical Medicine University of Copenhagen

    Papers in Europe PMC
  5. 05
    Fujikawa K5 papers · 2025

    Department of Oral Anatomy and Developmental Biology, Showa University School of Density, Tokyo, Japan.

    Papers in Europe PMC
  6. 06
    Ohsako M5 papers · 2025

    Graduate School of Health and Sports Science, Toyo University, Tokyo, Japan.

    Papers in Europe PMC
  7. 07
    Suito H5 papers · 2025

    Graduate School of Human Life Design, Toyo University, 1-7-11 Akabanedai, Kita-Ku 115-8650, Tokyo, Japan. s4a402100019@toyo.jp.

    Papers in Europe PMC
  8. 08
    Zhang X5 papers · 2026

    Key Laboratory of Human Motion Analysis and Rehabilitation Technology of the Ministry of Civil Affairs, Beijing Advanced Innovation Centre for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, No. 37 Xueyuan Road, Haidian District, Beijing 100191, China.

    Papers in Europe PMC
  9. 09
    Guszczyn T4 papers · 2025

    Department of Pediatric Orthopaedics and Traumatology, Medical University of Białystok, Białystok, Poland.

    Papers in Europe PMC
  10. 10
    Hölmich P4 papers · 2025

    Sports Orthopedic Research Center-Copenhagen, Orthopedic Department, Amager-Hvidovre, Copenhagen University Hospital, Copenhagen, Denmark.

    Papers in Europe PMC

Clinical research

Is a treatment being tested?

12

interventional trials for this specific condition

12 interventional trials matched this specific condition name; 4 currently recruiting in our sample.

Data as of 11 September 2026

12 interventional trials — more than 77.2% of diseases in the trials denominator have none at all (5501 of 7126; this disease is at the 93.2th percentile).

low confidence · 93.2th percentile (trials denominator)

Recruiting interventional trials

From the matched ClinicalTrials.gov set

12 interventional trials matched after quoted-phrase search and title/condition post-filter.

Observational and natural-history studies

2 observational studies match this condition. These do not test a treatment and are not counted in the interventional-trial headline, but they are genuine research: natural-history work often defines the endpoints needed for a future rare-disease trial, and families may be able to enroll.

None of the matched observational studies is currently listed as recruiting.

Open the complete matched search on ClinicalTrials.gov

Other registries (secondary)

Broader net from EU CTIS, ISRCTN, and ICTRP when available — deduped against ClinicalTrials.gov IDs already counted above. Dual-model LLM relevance gates what we keep. These rows are not added to the interventional headline.

raw 1 · after dedupe 1 · already on CT.gov 0 · kept 0 · parent 0 · uncertain 1 · dropped 0 · fetched 2026-07-30

Source notes: ictrp: Error: ICTRP public search unavailable (WHO portal is SPA-only; SOAP needs partnership). Tried: https://apps.who.int/tri

No secondary-registry studies passed dual-model relevance for this condition name (after dedupe).

Uncertain / not reviewed (1)

Where to find support

Condition-specific patient organisations, when Orphanet lists them, are on the disease’s Orphanet page. We also link umbrella groups that support undiagnosed and ultra-rare families.

Orphanet entry for Osgood-Schlatter disease — check Associations / patient organisations on that page.

India — NPRD

Last verified 2026-07-26

This ORPHAcode is not on our curated NPRD list (direct or Mondo-parent match). That does not decide clinical eligibility; families in India should ask a notified Centre of Excellence about current coverage.

Hand-curated for this project. ORPHAcode mappings are best-effort and may be incomplete or imprecise for umbrella categories. Parent (Mondo) matches mean the policy lists a broader category — confirm eligibility with a Centre of Excellence. Financial entitlements summarised from public policy statements and may change. This is not official government guidance.

How we counted this

Europe PMC query (preferred label + any corrected label + Orphanet and Mondo exact synonyms, stoplisted; unioned with resolved MeSH labels when available). UMLS / OMIM / NCIT cross-references are stored on the overview but are not added to the query string.

"Osgood-Schlatter disease" OR "Aseptic necrosis of the tibial tubercle" OR "Aseptic necrosis of tibial tubercle" OR "Osteochondrosis of the tibial tubercle" OR "Osteochondrosis of tibial tubercle" OR "Osgood-Schlatter's disease" OR "osteochondritis of the tibial tubercle" OR "osteochondritis of tibial tubercle"

Run this search on Europe PMC

ClinicalTrials.gov query (quoted phrases + MeSH via query.cond, plus recall-expansion terms when used):

"Osgood-Schlatter disease" OR "Aseptic necrosis of the tibial tubercle" OR "Aseptic necrosis of tibial tubercle" OR "Osteochondrosis of the tibial tubercle" OR "Osteochondrosis of tibial tubercle" OR "Osgood-Schlatter's disease" OR "osteochondritis of the tibial tubercle" OR "osteochondritis of tibial tubercle"

Interventional trials matched via: phrase (mesh = registered under a MeSH descriptor no name phrase would catch; recall-expansion = gene / selected parent terms used only for trials).

Study-type breakdown: 12 interventional · 2 observational · 0 expanded access. Only interventional studies enter the trial headline.

Query health: ok — strategies attempted: phrase; with hits: phrase

Run this search on ClinicalTrials.gov

Confidence reasoning

  • Preferred label is multi-word and distinctive
  • No synonyms dropped by stoplist
  • No label/synonym collisions with other diseases in this corpus
  • Publication count (1097) is extremely high with unknown/missing prevalence — treat as possible over-matching, not proven research intensity

Ingested 2026-07-27T05:10:50.061Z