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CompletedNCT04210440NEC15Updated Dec 24, 2019

The Treatment of Initial Stage of Hip Osteonecrosis: the Core Decompression

An interventional study of Core decompression procedure in Hip Necrosis and Hip Injuries, sponsored by Dante Dallari, MD. Completed at 1 site in Italy. Open to participants aged 18 Years to 50 Years. Per ClinicalTrials.gov, last updated 2019-12-24.

Sponsored by Dante Dallari, MD · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 16 years 9 months after the study started (first participant enrolled Mar 2003, registered Dec 2019).
Phase
Not applicable
Study type
Interventional
Enrollment
52
Allocation
Not applicable
Ages
18 Years to 50 Years
Sex
All
01

Study summary

This retrospective study evaluates 52 cases of avascular necrosis of femoral head (AVN) treated by core decompression, bone chips allograft, fibrin platelet rich-plasma (PRF) and concentrated autologous mesenchymal stromal cells (MSCs).

Read the detailed description

We report 52 cases of avascular necrosis of the hip (AVN), operated by decompression of the necrotic area with bone chips allograft, adjuvanted by concentrated autologous mesenchymal stromal cells (MSCs) and fibrin platelet rich-plasma (PRP).

The patients were followed-up at 6 weeks, 3 months, 6 months, 12 months, 24 months and then every year. Each time a clinical evaluation by Harris Hip Score (HHS) was carried out by the same orthopedic surgeon. Radiological controls (pelvis and hip affected) were performed at 6 weeks, 3 months, 6 months, 12 months, 24 months and then every year.

The primary outcome evaluated was the avoiding or delaying of total hip replacement (THR), while the secondary outcomes were the assessment of any change in clinical performance as measured by Harris Hip Score

02

Conditions studied

  • Hip Necrosis
  • Hip Injuries

Keywords

  • hip avascular necrosis
  • hip conservative surgery
03

In context

Necrosis

478 studies on the registry are indexed under Necrosis; 55 are open to participants now.

This study's enrollment of 52 is close to the median of 56 across 316 interventional studies indexed under Necrosis.

Browse Necrosis studies →

Lead sponsor

This is the only study on the registry with Dante Dallari, MD as lead sponsor.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 50 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • hip avascular necrosis

Exclusion criteria

Exclusion Criteria:

  • protrusio acetabuli
  • concentric femoral head migration;
  • presence of extensive surgery of the reference joint (osteotomies around the hip, open or arthroscopic osteochondroplasty for femoral-acetabular impingement)
  • presence of excessive deformity (acetabular or femoral head dysplasia; collapse deformity and deformed femoral head sequelae of Perthes);
  • concomitant rheumatic diseases;
  • bone tumors
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
52 participants (actual)

Study arms

  • Experimental
    Hip avascular necrosis

    patients affected by avascular necrosis of the Hip classified by Japanese Investigation Committee criteria

    Procedure: Core decompression procedure

Interventions

  • ProcedureCore decompression procedure

    Core Decompression with Bone Chips Allograft adjuvanted by Fibrin Platelet Rich-plasma (PRP) and Concentrated Autologous Mesenchymal Stromal Cells (MSCS), isolated from Bone Marrow

06

What researchers measure

Primary outcomes

  1. Avoiding arthroplasty

    The primary outcome evaluated was the avoiding or delaying of total hip replacement (THR)

    Time frame: 24 months after surgery

Secondary outcomes

  1. Harris Hip Score

    The collection of functional outcomes score HHS at 6 weeks. The HHS is a measure of dysfunction so the higher the score, the better the outcome for the individual. The maximum score possible is 100. Results can be interpreted with the following: \<70 as poor result; 70-80 as fair, 80-90 as good, and 90-100 as excellent results.

    Time frame: 6 weeks after surgery

  2. Harris Hip Score

    The collection of functional outcomes score HHS at 3 month after surgery. The HHS is a measure of dysfunction so the higher the score, the better the outcome for the individual. The maximum score possible is 100. Results can be interpreted with the following: \<70 as poor result; 70-80 as fair, 80-90 as good, and 90-100 as excellent results

    Time frame: 3 months after surgery

  3. Harris Hip Score

    The collection of functional outcomes score HHS at 6 month after surgery. The HHS is a measure of dysfunction so the higher the score, the better the outcome for the individual. The maximum score possible is 100. Results can be interpreted with the following: \<70 as poor result; 70-80 as fair, 80-90 as good, and 90-100 as excellent results.

    Time frame: 6 months after surgery

  4. Harris Hip Score

    The collection of functional outcomes score HHS at 12 month after surgery. The HHS is a measure of dysfunction so the higher the score, the better the outcome for the individual. The maximum score possible is 100. Results can be interpreted with the following: \<70 as poor result; 70-80 as fair, 80-90 as good, and 90-100 as excellent results.

    Time frame: 12 months after surgery

07

Study locations

1 site
  • Istituto Ortopedico Rizzli
    Bologna, 40136, Italy
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 24, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT04210440
Lead sponsor
Dante Dallari, MD
Responsible party
Dante Dallari, MD (MD, Istituto Ortopedico Rizzoli) — Sponsor-investigator
First posted
Dec 24, 2019
Start date
Mar 1, 2003
Primary completion
Mar 1, 2011
Completion
Mar 1, 2012
Last update
Dec 24, 2019

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Dec 2019. You cannot join it, but the record below documents what was studied.

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