The hamstring consists of semi-membranous, semi-tendentious and biceps femoris of the hip extensors. The hamstring functions as a knee stabilizer. Injuries are believed to be brought on by improper warmup, fatigue, scar tissue, poor flexibility and strength imbalances between quadriceps.
There have been case studies to prove shortening of the gluteus maximus and erector/multifidi may play a role in hamstring shortness and dysfunction. In rare cases, the sciatic nerve is entrapped between two heads of the hamstring attachments on the ischial tuberosity.
Indicators for treatment:
– Discomfort that is localized over muscle
– Pain in prolonged sitting
– Pain from behind the knee ( Trigger points in the Bicep Femoris)
– Meniscal problems ( Treating Semi Membranosus, if shortened alters position of menisci.)
– Strains from exercise when changing directions at a high rate of speed or decelerating.
You need to understand each muscle has an action function as well as an antagonistic muscle group that prevent that action. Both the muscle and its antagonist must be examined to find the true issue causing the pain.
Techniques used in treating the hamstring are myofascial release, pincer palpation, digital compression, pin and stretch, trigger point and palpation of muscle attachments.