RecruitingACTRN12620001171909

A single-arm feasibility trial evaluating a protein-based scaffold system with tissue transfer for the reconstruction of skull fractures

A single-arm feasibility trial evaluating the medical grade polycaprolactone/tricalcium phosphate (PCL-TCP) scaffold system with corticoperiosteal tissue transfer for the reconstruction of acquired calvarial defects in adults


Sponsor

Princess Alexandra Hospital

Enrollment

10 participants

Start Date

Aug 25, 2021

Study Type

Interventional

Conditions

Summary

This study is an open label single arm trial coordinated by the Investigators at the Princess Alexandra Hospital (PAH) in Woolloongabba (Queensland, Australia), the Australian Centre for Complex Integrated Surgical Solutions at the Translational Research Institute (Queensland, Australia) and the Centre for Regenerative Medicine at the Institute of Health and Biomedical Innovation in Kelvin Grove (Queensland, Australia). The primary purpose of this study is to assess the feasibility of surgical placement of a new protein scaffold in conjunction with free tissue transfer for bone reconstruction in patients who have an acquired skull defect secondary to trauma, malignancy or infection. Experimental data suggests augmented bone regeneration of this new protein scaffold when combined with autologous vascularised free tissue from the subject. It is hypothesised that this method of reconstruction will result in superior regeneration of skull bone with improved cosmesis at a reduced cost to hospital and patient. This will be assessed through pre-and post-operative CT imaging to quantify bone regeneration. This will be compared to previous types of skull reconstruction in terms of functionality (i.e. cosmesis and patient satisfaction) and financial implications (i.e. costs associated with operation(s) and complications). Patients will be followed up at 4weeks, 3, 6, 12 and 24 months to assess to adequate bony union (through CT and clinical exam) as well as completed surveys of their experience and physical, mental, emotional and social outcomes.


Eligibility

Sex: Both males and femalesMin Age: 18 YearssMax Age: 55 Yearss

Plain Language Summary

Simplified for easier understanding

This feasibility study tests a new surgical technique for reconstructing skull defects — gaps in the skull bone caused by trauma, cancer, or infection. Currently, skull reconstruction often requires the use of synthetic plates (like titanium or PEEK plastic), which can sometimes fail, become infected, or not integrate well with the body. This study uses a natural protein scaffold combined with a patient's own living tissue transferred from another part of the body (free tissue transfer) to encourage the bone to regrow. The hope is that the scaffold, seeded with the body's own cells, will gradually be replaced by real bone, resulting in a more natural and durable repair with fewer complications. Participants undergo the procedure at the Princess Alexandra Hospital in Queensland and are followed up for two years with CT scans and questionnaires to assess bone regeneration, cosmesis, and overall wellbeing. You may be eligible if you are aged 18 to 55 (older patients may be considered on a case-by-case basis), have an acquired skull defect, have an expected survival of more than 36 months, and are willing and able to comply with study requirements. People with active skull infection, immunodeficiency (including HIV), are on chemotherapy or corticosteroids, or have significant concurrent illness are not eligible.

This is a simplified summary. Always discuss eligibility with your doctor before enrolling in a clinical trial.

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Interventions

Interventional Extended long bone reconstruction using an mPCL-TCP scaffold with recombinant human bone morphogenetic protein 7 (rhBMP-7) in conjunction with a vascularised corticoperiosteal tissue

Interventional Extended long bone reconstruction using an mPCL-TCP scaffold with recombinant human bone morphogenetic protein 7 (rhBMP-7) in conjunction with a vascularised corticoperiosteal tissue transfer. The service will be provided by Consultant Plastic and Reconstructive Surgeons working out of Metro South/Metro North hospital system The procedure typically takes between 8-10 hours which includes management of the calvarial defect, raising of the corticoperiosteal free flap and subsequent reconstruction of the area The patients will all be discussed pre-operatively in multidisciplinary team (MDT) meetings for pre-operative computed tomography (CT) planning to define defect size. Scaffolds are customised via 3D (CT) imaging and produced by Osteopore International P/L Post-operatively patients will be reviewed by neurosurgical and plastic surgery teams to assess progress. The patients intra-operative course will be reviewed in subsequent MDT meetings to ensure appropriate surgical technique and to assess progress. Surgeons will have the option of meeting with an Osteopore representative to further clarify questions around scaffold design and surgical technique


Locations(1)

ACT,NSW,NT,QLD,SA,TAS,WA,VIC, Australia

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ACTRN12620001171909