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The hamstring
muscles are located at the
back of the thigh, starting from
the bottom of the pelvis and ending
just below the knee joint, and
consist of the short and long heads
of the biceps
femoris on the outside part
of the thigh (B), and the
semi-
membranosis
and semi-tendinosis
on the inside part of the thigh
(C). The hamstring muscles
themselves can be worked along
their entire length, as well as
their interfaces with the gluteals,
adductors, iliotibial band, gastroc
heads, and at their attachment to
the pelvis at the ischial
tuberosity - the bony prominence
you sit on (A). Several ART
treatment examples are shown
below.
The hamstring
muscles help pull the thigh
backward, bend the knee, affect the
forward or backward tilt of the
pelvis as you sit, and the inward
or outward rotation of the leg and
foot as you walk or run. Tight
hamstrings can prevent normal hip
flexion / knee extension and
therefore shorten your walking or
running stride. Weak hamstrings can
place a greater demand on the
quadriceps, adductors, and calf
muscles to create propulsion while
running. The sciatic nerve runs
down between the hamstring muscles
and can be related to sciatica
problems.
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Biceps
Femoris (Lateral
Hamstring) |
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