Table 1 Definition of preliminary criteria to define a sub-group of patients likely to benefit from traction.
Criterion | Definition |
|---|---|
1. Peripheralization with extension movement | Presence of peripheralization with at least one of the following extension movements during the baseline examination: single extension standing, repeated extension standing, sustained extension prone (prone on elbows), or repeated extension prone (prone press-ups). Peripheralization is judged to have occurred if a pain or paresthesia moves distally away from the spine toward the periphery, or paresthesia or a neurological sign is worsened or produced during or after the movement [48]. |
2. Positive crossed straight leg raise test | Reproduction of familiar symptoms in the symptomatic lower extremity with passive straight leg raising of the unaffected leg at an angle of 70° or less [49]. |
Positive Sub-Grouping Status (SG+): Either criterion 1 or 2 is present (or both are present) Negative Sub-Grouping Status (SG-): Both criterion 1 and 2 are absent | |