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Condition (MeSH)

Osteonecrosis

ClinicalTrials.gov lists 334 trials for Osteonecrosis or a narrower condition beneath it. Zimmer Biomet has the most among industry and government lead sponsors, with 49.

MeSH D010020 Musculoskeletal Diseases C05 C23 Listed by Orphanet as a rare disease
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Phase 1 Phase 1 12 Phase 1/2 Phase 1/2 6 Phase 2 Phase 2 15 Phase 2/3 Phase 2/3 1 Phase 3 Phase 3 11 Phase 4 Phase 4 33 Not applicable Not applicable 100 Observational Observational 154 Phase 1 Phase 1 12 Phase 1/2 Phase 1/2 6 Phase 2 Phase 2 15 Phase 2/3 Phase 2/3 1 Phase 3 Phase 3 11 Phase 4 Phase 4 33 Not applicable Not applicable 100 Observational Observational 154

Trials per phase (log scale)

1 more section with rows

258 of the 334 trials are tagged with Osteonecrosis itself; the rest are tagged with a narrower condition beneath it.

Get the Osteonecrosis report as a PDF

The PDF carries up to 50 rows of each section, where the page shows the first few, with the sources listed. Enter a work email and confirm it from the message we send, and the report follows by email.

When did Osteonecrosis trials start? (31)

Shown in this order: most recent first, 1990 onwards. 2026 is partial: trials registered with a 2026 start date so far, not a full year.

Trials over time, by phase

  • Phase 1
  • Phase 1/2
  • Phase 2
  • Phase 2/3
  • Phase 3
  • Phase 4
  • Not applicable
  • Observational
  • Other (Unknown)

Top of scale: 25

1991: 1 trials (Observational 1) 1997: 2 trials (Phase 3 1, Phase 1/2 1) 1998: 2 trials (Observational 1, Phase 4 1) 1999: 2 trials (Not applicable 1, Phase 1 1) 2000: 4 trials (Not applicable 1, Phase 4 1, Phase 3 2) 2001: 10 trials (Observational 3, Not applicable 4, Phase 4 2, Phase 3 1) 2002: 6 trials (Observational 3, Not applicable 1, Phase 4 1, Phase 2 1) 2003: 7 trials (Observational 2, Not applicable 1, Phase 4 3, Phase 2 1) 2004: 9 trials (Observational 1, Not applicable 5, Phase 4 3) 2005: 5 trials (Observational 2, Not applicable 1, Phase 4 2) 2006: 14 trials (Observational 4, Phase 4 6, Phase 2 2, Phase 1/2 1, Phase 1 1) 2007: 11 trials (Observational 6, Not applicable 1, Phase 4 2, Phase 3 2) 2008: 9 trials (Observational 4, Not applicable 4, Phase 2 1) 2009: 16 trials (Observational 5, Not applicable 5, Phase 4 1, Phase 3 1, Phase 2/3 1, Phase 2 1, Phase 1 2) 2010: 9 trials (Observational 5, Not applicable 2, Phase 4 1, Phase 1 1) 2011: 18 trials (Observational 11, Not applicable 2, Phase 4 1, Phase 3 1, Phase 2 2, Phase 1 1) 2012: 19 trials (Observational 7, Not applicable 9, Phase 4 2, Phase 2 1) 2013: 11 trials (Observational 9, Not applicable 1, Phase 3 1) 2014: 25 trials (Observational 13, Not applicable 10, Phase 2 2) 2015: 20 trials (Other 2, Observational 11, Not applicable 3, Phase 4 2, Phase 1/2 1, Phase 1 1) 2016: 11 trials (Observational 2, Not applicable 4, Phase 4 2, Phase 2 1, Phase 1 2) 2017: 23 trials (Observational 12, Not applicable 8, Phase 3 1, Phase 1 2) 2018: 10 trials (Observational 6, Not applicable 1, Phase 3 1, Phase 1/2 2) 2019: 5 trials (Observational 5) 2020: 9 trials (Observational 6, Not applicable 2, Phase 2 1) 2021: 13 trials (Observational 8, Not applicable 5) 2022: 14 trials (Observational 6, Not applicable 8) 2023: 13 trials (Observational 7, Not applicable 5, Phase 1 1) 2024: 10 trials (Observational 6, Not applicable 2, Phase 4 1, Phase 2 1) 2025: 16 trials (Observational 6, Not applicable 10)

Trials registered with a start date in each year, 1990 onward, stacked by phase (complete years only; the current partial year is in the table's notes). The table below lists the same counts, most recent years first.

Trials started per year
Year Trials started
2026 (partial year) 10
2025 16
2024 10
2023 13
2022 14
2021 13
2020 9
2019 5
2018 10
2017 23

Forecast of the full-year count, planned starts included, not rows of this table: about 7 trials starting in 2026 and about 11 in 2027, the average of the 24 months through September, counted as registered and carried forward. The rows of this table count trials registered so far with a start date in the year, planned starts included; the forecast looks ahead to the count for the whole year, so it is not the same measure. In backtests on conditions of this size, forecasts made part-way through the year were typically off by about 28 percent and ran about 20 percent low against the count later registered; forecasts made before the year began were off by about 39 percent and ran about 37 percent low against the count later registered. These figures rest on a few years of history (target years from 2018 to 2025, varying by figure), place each condition as it is mapped today rather than as it was then, and score against a count for the newest year that was still being revised. Only condition series were scored. The 2026 forecast is below the 10 already registered with a 2026 start date: at the cutoff, 6 trials were already registered to start in October to December, more than the method's monthly average allows for, and the method does not use those planned starts.

Prediction, not a registry value: median of 36 months from start to primary completion across 14 trials still running at the 2026-10-09 snapshot; registered median of 52 months across 202 trials with a primary completion typed Actual. Source: ClinicalTrials.gov / AACT (CTTI), public domain.

What phase are Osteonecrosis trials in? (9)

Shown in this order: phase order.

Show the trials by phase as a table
Trials by phase
Phase Trials
Phase 1 12
Phase 1/2 6
Phase 2 15
Phase 2/3 1
Phase 3 11
Phase 4 33
Not applicable 100
Observational 154
Unknown 2

How many Osteonecrosis trials are recruiting? (9)

Shown in this order: the order a trial moves through, from not yet recruiting to unknown.

Trials by recruitment status
Status Trials
Not yet recruiting 9
Recruiting 28
Enrolling by invitation 11
Active, not recruiting 46
Completed 130

Status as registered on ClinicalTrials.gov. Each trial is counted once.

Which lead sponsors run the most Osteonecrosis trials? (11)

Shown in this order: most trials first. Lead sponsors the registry classes as industry, NIH, US federal, other government or network. A hospital or university the registry files as government can appear here. Sponsors it classes as academic or other are shown on the full page, because that class cannot separate an institution from a named investigator.

Lead sponsors
Sponsor Trials
Zimmer Biomet 49
DePuy International 17
Medacta International SA 15
MicroPort Orthopedics Inc. 15
DePuy Orthopaedics 11

Which drugs are being tested for Osteonecrosis? (1)

Shown in this order: most trials first. One row per drug, matched to a single molecule under all its names, ranked by number of trials.

Drugs tested
Drug Trials
PROPOFOL 2

Interventions as named in the registry (14)

Shown in this order: most trials first.

Interventions as named in the registry
Drug Trials
acid Zoledronic 6
total knee arthroplasty 4
Hyperbaric Oxygen 3
Alendronate 20 mg 3
Ropivacaine 2 % 2

These are the names sponsors entered on ClinicalTrials.gov that we have not matched to a single molecule. Some are drugs under a brand or code name; others are procedures, doses or arm labels.

Which serious adverse events do Osteonecrosis trials report? (10)

Shown in this order: most subjects affected first. Subjects affected summed across trials, a cross-trial signal, not a rate.

Serious adverse events in this condition's trials
Adverse event Subjects affected Trials
Non-Operative 74 1
General 48 2
Osteoarthritis 40 2
General SAE 38 1
Muscular/Connective Tissue (generic musculoskeletal) 23 1

Which publications cover Osteonecrosis? (160)

Shown in this order: major-topic papers first, then newest, then most linked to trials.

Rare-disease identity (2)

Shown in this order: exact, broader, narrower, other.

Rare-disease identity
Orphanet disease ORPHA code Relation Source
Osteonecrosis 399158 Exact Orphadata Science knowledge files, Product 1
Osteonecrosis 399158 Exact Orphanet Rare Disease Ontology (ORDO)

Sub-conditions in MeSH (2)

MeSH descendants one level down with at least one trial, most trials first.

Not on this page

Not measured: delivery record.

Checked, with nothing recorded for this condition: prevalence.

Browse all condition evidence pages