Bone Defect

This is a single-center prospective randomized open-label non-inferiority clinical trial for adult patients with bone defects after extremity bone tumor resection. This study aims to evaluate the analgesic effect, osteogenic capacity and safety of magnesium-containing degradable polymer bone repair material. Up to 72 eligible patients aged 18-75 years will be enrolled and randomly divided into two groups at a 1:1 ratio. Patients in the experimental group will receive magnesium-containing degradable polymer bone repair material to fill bone defects after tumor removal. Patients in the control group will be implanted with conventional magnesium-free bone repair material. All participants will receive unified surgical anti-infection treatment, pain control, wound management and postoperative rehabilitation.The main study goal is to test whether the pain-relieving effect of the magnesium-containing material is not worse than conventional bone repair material. We will calculate total opioid pain-killer medicine consumption within 3 days, 7 days and 1 month after surgery. Secondary observations include newly-formed bone volume measured by CT three-dimensional reconstruction, surgical site infection rate and local tumor recurrence rate. Patients will complete scheduled follow-up visits at 1-month, 3-month and 6-month after surgery. All unexpected health problems or adverse reactions will be recorded during follow-up.

The aim of this clinical study is to evaluate the efficacy, safety and long-term (radiological and clinical) outcomes during comprehensive care continuum of implanted biocomposite for bone regeneration FlexiOss® compared to the current standard of care in patients with primary acute trauma bone defects. The efficacy, safety and long-term (radiological and clinical) evaluation will be assessed during follow up visits at 2, 6 weeks, 3, 6, 12 and 24 months.

Commercial decalcified bone scaffolds were combined with autologous bone marrow mesenchymal stem cells to form tissue engineered bone in vitro to explore the effect of this tissue engineered bone in the clinical repair of long tubular bone defects in limbs.