Outcome
Type |
Measure |
Description |
Time frame |
Safety issue |
Other |
Duration of surgery |
Duration of the intervention from first cut to suturing |
Intraoperative |
|
Other |
Blood loss |
Amount of Blood loss due to the intervention |
intraoperative |
|
Other |
Length of hospital stay |
Number of days the patient has to stay in hospital after the intervention |
up to patient's discharge from hospital (approximately 5 days postoperatively) |
|
Other |
Development of Patient satisfaction over time |
The satisfaction of the patient with the spine intervention is evaluated at all postoperative examinations |
Throughout the postoperative examinations (at each follow-up 3 months, 1 year, 3 years, 5 years postoperative) |
|
Other |
Return to work status |
|
Throughout the postoperative examinations (at each follow-up 3 months, 1 year, 3 years, 5 years postoperative) |
|
Primary |
Clinical outcome measured with the Oswestry Disability Index |
The Oswestry Disability Index is designed to measure back-specific disability. The questionnaire is self-administered and has 10 items concerning pain and activities of daily living including personal care, lifting, walking, sitting, standing, sleeping, sex life, social life and travelling. It is a self-administered questionnaire Each section is scored on a 0-5 scale, 5 is for maximum disability. The index is calculated by dividing the total score by the total possible score, which is multiplied by 100 and expressed as a percentage. The scores for all questions answered are summed, then multiplied by two to obtain the index (range 0 to 100). Zero is equated with no disability and 100 is the maximum disability possible. |
1 year postoperatively |
|
Secondary |
Clinical improvement: pain |
Pain will be assessed by the patient using the Visual Analogue Scale (VAS) which state "0" at one end representing "no pain" and "100" at the opposite end representing "maximal/worst pain" |
preoperatively, at 3 months, 1 year, 2 years and 5 years postoperatively |
|
Secondary |
Development Quality of life (EQ-5D-5L) |
EQ-5D-5L is a standardized 5-dimension 5-level measure of the health status and is developed by the EuroQol Group in order to have a simple and generic measure for clinical and economic assessment. In order to analyze the quality of life of the patients, the EQ-5D-5L is used. The score is self-completed by the patient and will therefore be used in German. |
preoperatively, at 3 months, 1 year, 2 years and 5 years postoperatively |
|
Secondary |
Radiological outcome: Fusion |
Bone fusion: After interbody fusion surgery fusion of the treated segment is aspired. Thus, the implant design shall allow on-/ingrowth to/into the material. The fusion status can be determined from radiographs (static or dynamic). Bony fusion can be characterized quantitatively by the fusion rate. |
1 year postoperatively |
|
Secondary |
Radiological outcome: Implant subsidence |
Implant penetration into the vertebral body occurs frequently after spinal reconstruction. Interbody fusion cages may subside into the vertebral body and lead to kyphotic deformity |
1 year postoperatively |
|
Secondary |
Radiological outcome: Implant migration |
Interbody fusion cages might migrate forward into the retroperitoneum or backwards into the vertebral canal and can, thus, cause serious clinical consequences (e.g. compression of nerve roots or dura mater). |
1 year postoperatively |
|
Secondary |
Rate of (Serious) adverse events |
Occurrence of complications potentially associated with the implanted devices can never be fully excluded during spinal surgery. In order to monitor potential complication and to identify so far unknown complications adverse events (AE) and serious adverse events (SAE) deemed related to the investigational device are recorded. |
throughout the studies duration up to five years postoperatively |
|
Secondary |
Development of Clinical outcome measured with the Oswestry Disability Index |
The Oswestry Disability Index is designed to measure back-specific disability. The questionnaire is self-administered and has 10 items concerning pain and activities of daily living including personal care, lifting, walking, sitting, standing, sleeping, sex life, social life and travelling. It is a self-administered questionnaire Each section is scored on a 0-5 scale, 5 is for maximum disability. The index is calculated by dividing the total score by the total possible score, which is multiplied by 100 and expressed as a percentage. The scores for all questions answered are summed, then multiplied by two to obtain the index (range 0 to 100). Zero is equated with no disability and 100 is the maximum disability possible. |
preoperatively, at 3 months, 1 year, 2 years and 5 years postoperatively. |
|