Hamstrings - Trigger Point Anatomy
Ultimately, the hamstrings are trying to be gluteal muscles, while the lumbar muscles are trying to be hamstrings
The hamstrings eccentrically contract during gait in order to decelerate extension of the knee joint and hip flexion, while also playing a very important role in pelvic stability.
The hamstring muscles decelerate internal rotation on heel-strike
The hamstrings disappear under the gluteus maximus and provide force closure of the sacroiliac joint through the coupled action of the force provided by the contralateral latissimus dorsi.
This force is transmitted through the sacrotuberous ligament and further up to the thoracolumbar fascia.
Hamstring trigger points are often mistaken for Sciatic Pain
Typically, pain from trigger points is referred up toward the gluteal muscles, with some residual pain spreading down just below and behind the knee into the medial gaster of the gastrocnemius.
This pain can often be mistaken for sciatic pain. Weak inhibited gluteal muscles, including the gluteus medius, can lead to myofascial trigger points forming in the hamstrings and lumbar erector muscles, including the quadratus lumborum.
Ultimately, the hamstrings are trying to be gluteal muscles, while the lumbar muscles are trying to be hamstrings.
Trigger Point therapy for injury avoidance
It's easy for one or more of the hamstrings to get overloaded and just about anyone who plays sport regularly, from professionals to weekend warriors, should benefit from therapy in this area to help avoid what can become painful and long term injuries.
We generally take a look at the hamstrings on just about every client who plays a sport regularly that involves running, jumping and turning ..... even when there are no symptoms.
Fortunately, identifying and treating trigger points in the hamstrings is pretty straightforward although bear in mind that trigger points in large muscles will often require additional pressure.
The hamstrings consist of three muscles. From medial to lateral they are the semimembranosus, semitendinosus, and biceps femoris.
Ischial tuberosity (sitting bone). Biceps femoris also originates from back of femur.
InsertionSemimembranosus: back of medial condyle of tibia (upper side part of tibia).
Semitendinosus: upper medial surface of shaft of tibia.
Biceps femoris: lateral side of head of bula. Lateral condyle of tibia.
Flex knee joint. Extend hip joint. Semimembranosus and semitendinosus also medially rotate (turn in) lower leg when knee is flexed.
Biceps femoris laterally rotates (turns out) lower leg when knee is flexed.
Branches of sciatic nerve, L4, 5, S1, 2, 3.
Basic Functional Movement
During running, the hamstrings slow down the leg at the end of its forward swing and prevent the trunk from flexing at the hip joint.
Biceps Femoris - Typical Referred Pain Pattern
Semimembranosus/ Semitendinosus - Typical Referred Pain Pattern
Trigger Point Referred Pain PatternsSemimembranosus and semitendinosus: strong 10 cm zone of pain, inferior gluteal fold, with diffuse pain posteromedial legs to Achilles tendon area.
Biceps femoris: diffuse pain posteromedial legs, with strong 10 cm zone posterior to knee joint.
Posterior thigh pain sitting/walking (worse at night), tenderness in back of legs may cause limping, pain worse on sitting, post back surgery, hamstring pain cycling/soccer/ basketball/tennis/football.
Prolonged driving, improper sitting/ work chair that digs into back of thighs, hip surgery, sitting cross- legged, hip/knee/ankle injury/ fracture, leg casts, high-heeled shoes, PSLE, sacroiliac joint dysfunction, improper stretching before/after sport.
Sciatica. Radiculopathy. Muscle tears. Osteitis. Bursitic osteoarthritis of knee. Knee joint dysfunction. Tenosynovitis.
Piriformis, popliteus, gluteal muscles, obturator internus, vastus lateralis, plantaris, gastrocnemius, thoracolumbar paraspinal muscles.
Trigger points in hamstrings often occur from improper stretching before and after sports. It is very important to get the stretching techniques down pat. Balls and foam rollers can be very good for relieving pain and stiffness when you are at home.
Trigger Point Treatment Techniques
|Spray and Stretch||YES|
|Deep Stroking Massage||YES|
|Muscle Energy Techniques||YES|
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This trigger point therapy blog is intended to be used for information purposes only and is not intended to be used for medical diagnosis or treatment or to substitute for a medical diagnosis and/or treatment rendered or prescribed by a physician or competent healthcare professional. This information is designed as educational material, but should not be taken as a recommendation for treatment of any particular person or patient. Always consult your physician if you think you need treatment or if you feel unwell.
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