The aim of this trial is to evaluate if P-15L bone graft (investigational device) is not inferior in effectiveness and safety to local autologous bone (and allograft where necessary) as an extender (control device) when applied in instrumented transforaminal lumbar interbody fusion (TLIF) in subjects with degenerative disc disease (DDD). In addition to the general overall objective, a sub-group analysis will be performed on the high-risk subject population (tobacco use, obesity, diabetes), as previous studies have shown negative effects of smoking, obesity and diabetes on fusion and bone healing, increased peri/postoperative complications, and lower patient-reported outcome scores.
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Secondary surgical intervention
Timeframe: 72 Months
Fusion
Timeframe: 72 Months
Oswestry Disability Index (ODI)
Timeframe: 72 Months
Neurological deficit
Timeframe: 72 Months
No serious device-related adverse event
Timeframe: 72 Months