OssDsign AB (publ.) announced that the previously communicated outstanding 12-month results from the clinical study TOP FUSION have been published in the peer-reviewed journal Biomedical Journal of Scientific & Technical Research. The results show a 93 % spinal fusion rate as well as improvements in quality of life and pain following surgery with the novel nanosynthetic bone graft OssDsign Catalyst. The data, published in the peer-reviewed Journal of Scientific & Technical Research, clearly demonstrates that the use of OssDsign Catalyst leads to consistent and rapid bone healing and remodeling, with improved patient outcomes as a result.

High fusion rate and improved quality of life. The use of synthetic bone graft substitutes has become more common to avoid the need to source allograft oriliac crest autograft. A new nanosynthetic, silicate-enriched calcium phosphate bone graft substitute, OssDsign Catalyst, has been designed to deliver consistent and rapid bone healing and renovation.

The high level ofuted silicate (5.8%) in the porous granules combined with the nanoscale architecture is thought to promote early bone formation. TOP FUSION includes 17 patients suffering from degenerative disc disease, degenerative spondylolisthesis, or lumbar spinal stenosis to evaluate the safety and efficacy of OssDsign Catalyst in patients undergoing spinal Transforaminal Lumbar Interbody Fusion (TLIF) surgery. Post-operative follow-up took place at 6 weeks, 3 months, 6 months and 12 months post-operatively to assess the presence of fusion.

CTs were independently radiologically reviewed by Medical Metrics Inc. Of the 17 patients recruited in TOP FUSION, three were withdrawn for reasons unrelated to Catalyst. All the remaining 14 patients completed the follow-up 12 months after surgery. The post-operative follow-ups showed that 4/14 (29%) of the patients were fused at 3 months, 9/14 (64%) at 6 months, and 13/14 (93%) at 12 months.

The remaining patient has evidence of fusion progression so may be fused at the 24-month follow-up visit. All scores used to quantify pain and function including Oswestry Disability Index (ODI), visual analog scale (VAS) and overall health in patients (SF-36) showed improvement in quality of life over time, at all post-operative follow-up evaluations. No device-related Adverse Events (AEs) were observed during the study.

OssDsign Catalyst is a nanosynthetic bone graft that stimulates the formation of healthy bone tissue in spinal fusion surgeries. The graft is composed of a proprietary nanocrystalline structure which is resorbed and replaced by new and healthy bone tissue in the body. The clinical study TOP FUSION (NCT05114135) is a first-in-patient open-label, prospective, single-center clinical study led by Dr. Péter Pál Varga and Dr. Àron Lazary at the National Center for Spinal Disorders at the Buda Health Clinic in Budapest, Hungary.

The study's primary endpoint is assessed by the rate of bone fusion at 12 months by CT as well as the lack of device-related adverse events within the study period. TOP FUSION is a two-year study, and a final follow-up will be made at 24 months.