Spine Position and Neural Sensitivity

"Knee Extension Angle (KEA):~* This test will be administered with an ankle-foot orthosis (AFO) maintaining the participants ankle in neutral.~* The participant will lie supine on the examination table with the contralateral lower extremity (LE) stabilized on the support surface using a mobilization strap.~* The hip of the lower being examined will be flexed to 90 degrees.~* The participant will then actively straighten their lower leg while maintaining upper leg in same position~* Once the participant feels they are at maximal knee extension (patient instructed to straighten leg as far as what is comfortable), the angle will be measured with iPhone Inclinometer.~* Participant asked to report any symptoms they are feeling and where (recorded for qualitative analysis)"

"Straight Leg Raise (SLR):~* Position the participant in supine on the plinth with knees extended and L LE strapped to the plinth~* The participant will keep the AFO donned on the R distal ankle to keep the ankle in neutral position.~* A researcher will passively lift the participant's right leg moving at a slow but consistent pace of approximately 15 degrees per second, while keeping it straight until a significant resistance is detected or the participant reports a production of symptoms, whichever occurs first.~* Measurement of the SLR angle will be assessed with iPhone inclinometer.~* Participant asked to report any symptoms they are feeling and where (recorded for qualitative analysis)"

"Slump Test Procedure:~* Participant will be instructed to sit upright with their legs over the edge of table~* AFO remains on R leg~* Participant will sequentially flex trunk, look down at the floor~* Participant will extend R knee until symptoms are felt. Measure of angle with iPhone inclinometer placed at superior aspect of medial malleolus~* Participant asked to report any symptoms they are feeling and where (recorded for qualitative analysis)"

"Extended Slump Procedure:~* Participant will be instructed to sit upright with their legs over the edge of table~* AFO remains on R leg~* Participant is asked to arch their lower back into maximal extension in sitting, stabilized to research bench to maintain hyper-lordosis posture.~* The participant is asked first flex cervical spine, then to extend their knee until it reaches full ROM or symptoms are felt that limit ROM.~* Knee extension ROM is assessed with iPhone inclinometer at superior aspect of medial malleolus.~* Participant asked to report any symptoms they are feeling and where (recorded for qualitative analysis)"