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a variety of dysfunctions. Sciatica simply means a referred pain going down the leg. The pain may stop in the thigh or continue all the way to the foot. In addition to a nerve root being compressed by a herniated disc, this same type of pain can be produced by injury to a portion of the posterior sacroiliac, sacrotuberous, or sacrospinous ligaments. Additionally, an injury to the posterior hip joint capsule may refer pain to the upper hamstring area as well. When a disc is affected, there will be noticeable weakness in certain movements. When a ligament is the root cause, pain while sitting will often cause pain in the thigh and will frequently come and go depending on the type of activity the person is engaged in. RESISTED FLEXION OF THE KNEE SUPINE A hamstring test against resistance can be done in several positions. Each position puts a slightly different kind of stress on the hamstring. In this first test (Image 2), the client is lying supine with the injured leg bent at a 90-degree angle, and their foot starts on the table. The practitioner places his or her hands around the back of the heel as the client attempts to pull the heel toward the buttock. The practitioner is giving equal resistance, and there is no movement. If there is pain, this indicates a hamstring strain. In this position, stress is placed more on the distal portion of the hamstrings, close to the knee. RESISTED FLEXION OF THE KNEE PRONE In the second test (Image 3), which applies greater stress to the upper portion of the thigh, the client is lying prone with the lower leg bent at a 90-degree angle. Standing at the level Resisted flexion of the knee prone. Resisted flexion of the knee supine. tune in to your practice at ABMPtv 97