A hybrid prospective/retrospective, multicenter, single-arm, data collection study.
Collect long-term follow-up data with x-rays and CT on subjects who received the DIAM™ Spinal Stabilization System through the original IDE protocol. Data collected at one-time point from subjects with at least 5 years of follow-up data.
Study Type
OBSERVATIONAL
Enrollment
175
This is an observational study of long term follow up data for patients who previously received the DIAM implant
Evaluate the safety associated with the use of the investigational implant during long term follow up
The DIAM device, specifically at long-term follow-up. A subject is considered to be a long-term success if they are free from serious device-related adverse events through final follow-up. Secondary surgical intervention for treatment failure (i.e. recurrence of pain or functional impairment) without other serious device-related adverse event is not considered to be a serious device-related adverse event for the purposes of the primary endpoint.
Time frame: 5-10 years after implantation
Back Pain evaluation
Composite overall success consisting of: Pain/disability (Oswestry) success (≥15 pt. improvement relative to baseline) No serious adverse event is classified as "implant-associated", "procedure associated" or "implant-/surgical procedure associated." No additional surgical procedure at the involved level is classified as a failure.
Time frame: 5-10 years after implantation
Back Pain evaluation
Change in back pain score compared to baseline
Time frame: 5-10 years after implantation
Back Pain evaluation
Back pain success calculated as: Pre-treatment Score - Post-treatment Score \> 0 (Score = pain intensity + pain frequency)
Time frame: 5-10 years after implantation
Back Pain evaluation
SF-36/RAND-36 success calculated by: PCSPost-tx - PCSPre-tx \> 0
Time frame: 5-10 years after implantation
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