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Your journey
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More info
You can access this
clinical trial
if you have
Avascular Necrosis of Femur Head
and you are
over 18
years old
This is a second phase trial assessing
efficacy and side effects of the new treatment.
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The purpose

Non-traumatic osteonecrosis is a painful disorder of the hip characterized by a necrosis of the osteomedullary tissue, which leads to subchondral bone collapse and joint destruction. Core decompression is currently the treatment of choice for early stage osteonecrosis of the femoral head. This method consists in decompressing the rigid intra-osseous chamber to promote revascularization, thus halting progression of the disease and stimulating repair. Still this treatment remains highly controversial, since the success rates of the first studies have not been repeated. The exact pathology mechanisms involved in osteonecrosis have not yet be fully elucidated. Several hypotheses have been evoked, including fat embolism, trabecular bone microfractures, microvascular tamponade and, more recently, impaired bone and/or mesenchymal cells recruitment. Three studies have indicated the potential clinical benefits of cell-based approaches for the treatment of osteonecrosis (Hernigou 1997, Hernigou & Beaujean 2002, Gangji et al. 2004). This is on the basis of these observations that a proprietary population of autologous osteoblastic cells (PREOB®) has been developed. This Phase 2B study aims at demonstrating the efficacy and safety of PREOB® in the treatment of early stage osteonecrosis of the femoral head. The primary goal of this study was to investigate the safety and efficacy of the implantation of the investigational product PREOB® (human autologous bone marrow-derived osteoblastic cells) in comparison to bone marrow concentrate (BMC) when implanted at the osteonecrotic lesion of the femoral head, with a follow-up period of up to 5 years.

Provided treatments

  • Drug: Core decompression/PREOB® implantation
  • Drug: Core decompression/BMC implantation

Locations near you

Unfortunately, there are no recruiting locations near you. Please check the list with all locations below.
Tris trial is registered with FDA with number: NCT02890537. The sponsor of the trial is Erasme University Hospital and it is looking for 82 volunteers for the current phase.
Official trial title:
Treatment of Osteonecrosis of the Femoral Head by Implantation of Preosteoblastic Cells: a Randomized, Controlled, Single Blind Pilot Study