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| Name | Class |
|---|---|
| University of Cadiz | OTHER |
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The objective of the present study is to analyse the diagnostic validity of 8 neurodynamic and/or orthopedic tension tests using magnetic resonance imaging as the Gold Standard.
Lumbar radiculopathy is a nerve root disorder which affects quality of life of the patient and it is considered as an important health problem. Therefore, its correct diagnosis is essential. The objective of the present study is to analyse the diagnostic validity of 8 neurodynamic and/or orthopedic tension tests using magnetic resonance imaging as the Gold Standard.
This is an epidemiological study of randomized consecutive cases which was observational, descriptive, transversal, double blinded and followed the STARD (Standards for Reporting Diagnostic accuracy studies) declaration.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Straight Leg Raise test and Bragard test | Patients referred to the radiology department, allocated to undergo MRI scan and neurodynamic tension tests |
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| Fajersztajn test (F) and Sicard test (S) | Patients referred to the radiology department, allocated to undergo MRI scan and neurodynamic tension tests |
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| Passive Neck Flexion test (PNF)and Kernig test (K) | Patients referred to the radiology department, allocated to undergo MRI scan and neurodynamic tension tests |
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| Slump test (ST) and Dejerine triad (DT) | Patients referred to the radiology department, allocated to undergo MRI scan and neurodynamic tension tests |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Straight Leg Raise test (SLR) and Bragard test (B) | Diagnostic Test | The following neurodynamic and/or orthopedic tension tests were done: the Straight Leg Raise test (SLR), the Bragard test (B) and another test which was the combined test of both (SLR+B) |
| Measure | Description | Time Frame |
|---|---|---|
| Sensitivity of the tests | Is is an indicator of the internal validity of the test. The probability that a subject with lumbar or lumbosacral radiculopathy have a positive results in the diagnostic test. It is obtained with the statistical analysis | Through study completion, an average of 2 years |
| Specificity of the tests | Is is an indicator of the internal validity of the test. Indicates the percentage of healthy subjects confirmed with a test with negative results. It is obtained with the statistical analysis | Through study completion, an average of 2 years |
| Positive and negative predictive values (PV+ and PV-) | Is is an indicator of the internal validity of the test. The range of values are interpreted as: 0-10% null, 10-30% very low; 30-60% low; 60-70% low moderate; 70-80% high moderate; 80-90% high; 90-100% very high. | Through study completion, an average of 2 years |
| Likelihood Ratio (LR+ y LR-). | Is is an indicator of the external validity of the test.The range of values and their impact on the clinical utility are: LR+: > 10 great increase, excellent test; 5-10 moderate increase, good test; 2-5: small increase, bad test; < 2: minor increase, useless test. LR-: 0.5-1 minor decrease, useless test; 0,5-0,2 small decrease, bad test; 0,1-0,2 moderate decrease, good test; < 0,1 great decrease, execelent test | Through study completion, an average of 2 years |
| Kappa index (K) | It is used to estimate the reliability or accuracy of the tests. The range of values are interpreted as follows: Poor, < 0.20; weak, between 0.21 and 0.40; Moderate, between 0.41 and 0.60; Good, between 0.61 and 0.80; Very good, between 0.80 and 1 | Through study completion, an average of 2 years |
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Inclusion Criteria:
Exclusion Criteria:
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The target population were all the patients referred to the Radiology Department of the 'Puerta del Mar University Hospital' in Cádiz (Spain) to undertake a MRI scan of the lumbar or lumbosacral spine
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| Fajersztajn test (F) and Sicard test (S) | Diagnostic Test | The following neurodynamic and/or orthopedic tension tests were done: the Fajersztajn test (F), the Sicard test (S) and another test which was the combination of both (F+S) |
|
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| Passive Neck Flexion test (PNF)and Kernig test (K) | Diagnostic Test | The following neurodynamic and/or orthopedic tension tests were done: the Passive Neck Flexion test (PNF), the Kernig test (K) and another test which was the combination of both (PNF+K) |
|
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| Slump test (ST) and Dejerine triad (DT) | Diagnostic Test | The following neurodynamic and/or orthopedic tension tests were done: the Slump test (ST), the Dejerine triad (DT) and another test which was the combination of both (ST+DT) |
|
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| MRI scan | Diagnostic Test | All participants will undergo a MRI scan to compare results between the index tests and the Gold Standard |
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| ID | Term |
|---|---|
| D011843 | Radiculopathy |
| ID | Term |
|---|---|
| D010523 | Peripheral Nervous System Diseases |
| D009468 | Neuromuscular Diseases |
| D009422 | Nervous System Diseases |
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| ID | Term |
|---|---|
| D008279 | Magnetic Resonance Imaging |
| ID | Term |
|---|---|
| D014054 | Tomography |
| D003952 | Diagnostic Imaging |
| D019937 | Diagnostic Techniques and Procedures |
| D003933 | Diagnosis |
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