Group difference in Oswestry Disability Index (ODI) 3 to 4 months after the fracture
ODI is a patient-reported outcome measure for spinal disorders. It consists of 10 questions related to back specific disabilities such as pain, personal care, walking and sitting ability, lifting capacity and social life.
Change in Oswestry Disability Index (ODI) from the time of the fracture to 3 to 4 months after the fracture
Change in ODI between groups.
Change in Oswestry Disability Index (ODI) from the time of the fracture to 1 year after the fracture
Change in ODI between groups.
Group difference in Short Musculoskeletal Function Assessment (SMFA) at 3 to 4 months
SMFA is a patient-reported outcome measure for a broad range of musculoskeletal disorders consisting of a total of 46 questions. 34 questions measure the patient's dysfunction and 12 questions measure how bothered the patients are by their symptoms.
Group difference in Short Musculoskeletal Function Assessment (SMFA) at 1 year
SMFA is a patient-reported outcome measure for a broad range of musculoskeletal disorders consisting of a total of 46 questions. 34 questions measure the patient's dysfunction and 12 questions measure how bothered the patients are by their symptoms.
Change in Short Musculoskeletal Function Assessment (SMFA) from the time of the fracture to 3 to 4 months after the fracture
Change in SMFA between groups.
Change in Short Musculoskeletal Function Assessment (SMFA) from the time of the fracture to 1 year after the fracture
Change in SMFA between groups.
Group difference in EQ-5D-5L at 3 to 4 months
EQ-5D-5L is a standardized quality of life instrument developed by the EuroQol group. It consists of 5 dimensions measuring mobility, personal care, usual activities, pain/discomfort and anxiety/depression with 5 levels for each dimension (1=no problems, 2=slight problems, 3=moderate problems, 4=severe problems, 5=extreme problems). It also has a visual analog scale (EQ VAS) from 0 (worst possible health) to 100 (best possible health) to measure how the subjects consider their own health.
Group difference in EQ-5D-5L at 1 year
EQ-5D-5L is a standardized quality of life instrument developed by the EuroQol group. It consists of 5 dimensions measuring mobility, personal care, usual activities, pain/discomfort and anxiety/depression with 5 levels for each dimension (1=no problems, 2=slight problems, 3=moderate problems, 4=severe problems, 5=extreme problems). It also has a visual analog scale (EQ VAS) from 0 (worst possible health) to 100 (best possible health) to measure how the subjects consider their own health.
Change in EQ-5D-5L from the time of the fracture to 3 to 4 months after the fracture
Change in EQ-5D-5L between groups.
Change in EQ-5D-5L from the time of the fracture to 1 year after the fracture
Change in EQ-5D-5L between groups.
Group difference in radiographic fracture pattern- standing radiograph
The patients will do a standing, whole spine radiograph. The degree of fracture compression, local and global kyphosis will be registered.
Group difference in radiographic pattern- supine computed tomography at 1 year
The patients will do a computed tomography (CT) 1 year after the fracture. The degree of fracture compression, local and global kyphosis and adjacent segment degeneration will be compared.
Group difference in radiographic pattern- supine computed tomography at 3 to 4 months
The patients will do a computed tomography (CT) at 3 to 4 months after the fracture. The degree of fracture compression, local and global kyphosis and adjacent segment degeneration will be compared.
Change in radiographic pattern- supine computed tomography - from the time of fracture to 3 to 4 months
The patients will do a computed tomography (CT). The degree of fracture compression, local and global kyphosis and adjacent segment degeneration will be registered. Group comparisons of radiological changes will be performed.
Change in radiographic pattern- supine computed tomography - from 3 to 4 months to 1 year from the fracture
The patients will do a computed tomography (CT). The degree of fracture compression, local and global kyphosis and adjacent segment degeneration will be registered. Group comparisons of radiological changes will be performed.
Change in radiographic pattern- supine computed tomography - from the time of fracture to 1 year
The patients will do a computed tomography (CT). The degree of fracture compression, local and global kyphosis and adjacent segment degeneration will be registered. Group comparisons of radiological changes will be performed.
Magnetic resonance imaging (MRI) at 1 year
The patients will do a magnetic resonance imaging (MRI). The degree of fracture compression, local and global kyphosis, adjacent segment degeneration and extent of any soft tissue injuries will be registered. Group comparisons of MRI changes will be performed.
Imaging in correlation to patient reported outcome measures at 3 to 4 months from the fracture
The degree of fracture compression, local and global kyphosis, adjacent segment degeneration and extent of any soft tissue injuries registered on computed tomography (CT) will be compared to patient reported outcome measures at 3 to 4 months
Imaging in correlation to patient reported outcome measures at 1 year from the fracture
The degree of fracture compression, local and global kyphosis, adjacent segment degeneration and extent of any soft tissue injuries registered on X-ray, CT and MRI will be compared to patient reported outcome measures at 1 year.
Adverse events
The subjects will be linked with The National Board of Health and Welfare National Patient Register by using their Swedish personal identity number (PIN). Data on the level of inpatient and outpatient healthcare, spinal surgery during follow up and adverse events (i.e., postoperative infections, thromboembolism, etc.) will be collected and compared between the study groups. In Norway similar data will be collected from the patient files and questionnaires.
Drug prescription/consumption
Data on analgesics and antibiotics prescribed will be collected from The National Board of Health and Welfare Swedish Prescribed Drug Register. Collected prescriptions will be assessed as dichotomous data (collected/not collected) at different time intervals; 0 to 4 months and 4 months to 1 year. In Norway similar data will be collected from the patient files and questionnaires.
Sick leave
Data from the Swedish Social Insurance Agency / Statistics Sweden will be collected to compare sick leave and loss of income due to the fracture. Data will be stratified based on the presence or absence of sick leave before the fracture event. Data on total time on sick leave as well as the diagnosis used for sick leave will be collected. In Norway similar data will be collected from the patient files and questionnaires.
Individual cost from the time of fracture to 3 to 4 months
The number of outpatient and telephone contacts (physician, nurse, physiotherapist) and salary losses the fracture and treatment have resulted in will be collected from patient files and official health registries and compared between the groups.
Individual cost from the time of fracture to 1 year
The number of outpatient and telephone contacts (physician, nurse, physiotherapist) and salary losses the fracture and treatment have resulted in will be collected from patient files and official health registries and compared between the groups.
Incremental cost-effectiveness ratio
Quality-adjusted life years (QALYs) will be calculated for each group as measured by EQ-5D-5L. Combining cost and QALY yields the incremental cost-effectiveness ratio (ICER) of the surgical intervention as compared to non-surgical care.
Mortality at 1 year
Mortality, including the cause of death, will be collected from the National Board of Health and Welfare Cause of Death Register. In Norway data will be collected from official registries.
Mortality at 5 year
Mortality, including the cause of death, will be collected from the National Board of Health and Welfare Cause of Death Register. In Norway data will be collected from official registries.
Mortality at 10 years
Mortality, including the cause of death, will be collected from the National Board of Health and Welfare Cause of Death Register. In Norway data will be collected from official registries.
Oswestry Disability index (ODI) at 5 years
ODI are planned to be collected at 5 years.
Oswestry Disability index (ODI) at 10 years
ODI are planned to be collected at 10 years.
Short Musculoskeletal Function Assessment (SMFA) at 5 years
SMFA are planned to be collected after 5 years.
Short Musculoskeletal Function Assessment (SMFA) at 10 years
SMFA are planned to be collected after 10 years.
EQ-5D-5L at 5 years
EQ-5D-5L are planned to be collected after 5 years.
EQ-5D-5L at 10 years
EQ-5D-5L are planned to be collected after 10 years.
Sick leave at 5 years
Long-term data on sick leave are to be collected from the Social Insurance Agency at 5 years to compare difference in long-term sick leave between study groups. In Norway similar data will be collected from patient files and questionnaires.
Sick leave at 10 years
Long-term data on sick leave are to be collected from the Social Insurance Agency at 10 years to compare difference in long-term sick leave between study groups. In Norway similar data will be collected from patient files and questionnaires.
Social cost at 5 years
Analysis of the long-term social cost will be calculated for each treatment by collecting data on cost from sick leave from the Social Insurance Agency, estimated cost from health care visits collected from the National Patient Register and estimated cost on pharmaceutical prescriptions from the Prescribed Drug Register at 5 years. In Norway similar data will be collected from patient files and questionnaires.
Social cost at 10 years
Analysis of the long-term social cost will be calculated for each treatment by collecting data on cost from sick leave from the Social Insurance Agency, estimated cost from health care visits collected from the National Patient Register and estimated cost on pharmaceutical prescriptions from the Prescribed Drug Register at 10 years. In Norway similar data will be collected from patient files and questionnaires.