Muscles in the hips are what create turnout. The most obvious muscles of the hip are located in the buttocks. The large gluteal muscles act as hip extensors (taking the leg to the back such as in arabesque) and external rotators.
In contrast, the muscles that are more important for turnout, the deep lateral rotators, are small and are
buried under the gluteus maximus. These six lateral rotator muscles are attached to different
parts of the pelvis. They all then run laterally, spanning the back of the hip joint capsule and the
ischiofemoral ligament. Finally, they all attach on or adjacent to the greater trochanter of the femur. In
addition to the six lateral rotators and the gluteus maximus, there are additional muscles around the hip
that contribute to external rotation. The sartorius is an external rotator that is thought to be particularly
active when the hip is flexed or abducted such as in a passé or front attitude. The adductor
muscles on the inner thigh may contribute to external rotation when the femur is in extension and is
already turned out by the primary external rotators. Straightening the legs from the bottom of plié is a
good example of using adductors in outward rotation. The function of all six deep rotator muscles is to laterally rotate or turn out the leg, relative to the pelvis.
They achieve this goal by pulling the femur’s greater trochanter backwards, that is, toward the back of the pelvis. It is often difficult for dancers to isolate the contraction of this muscle group. It is not necessary to tighten or “clench” the gluteals to activate the deep lateral rotators.
Teachers encourage their students to turnout only from the hips, and as a working cue, this is sound
advice. However, anatomically, there are contributions to a fully turned out leg that come from the
structure of the knee and lower limb joints. Research suggeststhat on average, 60% of turnout is created
by outward rotation of the hip. Twenty to thirty percent of turnout may then emanate from the ankle, with the remaining percentage created by the tibia and knee joint. The limiting anatomical structures include bones, ligaments, the joint itself, and muscles surrounding the hip joint.
There are five main factors that affect turnout:
1. Angle of femoral anteversion
On average, the neck of the femur is angled 15 degrees forward relative to the shaft of the femur. An increase in this anterior angulation, called anteversion, often will cause
someone to toe in when they walk. This is often referred to as being pigeon toed.
In children who are born with more anteversion, the orientation of the femoral shaft in the hip
socket makes the knees face towards each other when standing or walking. In ballet class, when
they turn out their legs from the hip, the knees face the front, leaving little additional hip rotation
to create the expected angle of outward rotation visible at the feet.
However, a decrease in this angulation, called retroversion, will allow one to have greater turnout. Children born with retroversion have a much easier time with turnout. Just
standing in parallel, the knees and feet tend to face outward. By adding external rotation at the
hip, they can achieve a larger angle of outward rotation visible at the feet than the average person.
Currently, most researchers agree that these are not conditions that can be altered with training.
2. Orientation of the acetabulum
The socket of the hip faces out to the side and somewhat forward, but there are individual
variances. The socket that tends to face more directly to the side with a less forward facing will
allow a greater amount of turnout to come from the hip.
3. Shape of the femoral neck
The neck of the femur is subject to some variability. A longer and more concave neck allows a
greater range of motion at the hip; it is less likely to contact the outer edge of the acetabulum in
turnout and is therefore considered to be advantageous. A shorter and less concave neck will have
the opposite effect and limit turnout potential.
4. Elasticity of iliofemoral or Y ligament
As previously mentioned, the three ligaments surrounding the hip restrict extension. The
iliofemoral ligament, strong and with minimal elastic properties, opposes extension of the hip.
This ligament also resists lateral rotation or turnout of the hip. Thus, the more the hip is extended
to the back, the greater the resistance to turnout. It is controversial whether attempts should be
made to alter the flexibility of this ligament, as it may alter its capacity to stabilize the hip. In
order to gain greater turnout when standing, dancers sometimes flex the hips by tilting the pelvis
forward. This flexed position creates some laxity in the ligaments, providing slack that can be
used to increase hip rotation. However, this attempted compensation creates a position of lumbar
lordosis (low back sway), thrusts the buttocks backward, and is aesthetically undesirable and
potentially damaging. Additionally, with a pelvis in this tilted position, the angle for using the
deep external rotator is less effective.
5. Flexibility and strength of the muscle-tendon unit
The muscles surrounding the hip, if unnaturally tight, may restrict a dancer’s ability to achieve an
acceptable degree of turnout. Proper stretching techniques will enable dancers to achieve their
maximal turnout potential. Similarly, adequate strength and optimal activation of the hip external
rotators may help dancers to achieve their potential turnout.
Wilmerding, Virginia, Ph.D, and Donna Krasnow, M.S. "Turnout for Dancers: Hip Anatomy and
Factors Affecting Turnout." Www.iadms.org. “International Association for Dance Medicine and Science, 2011. Web. 22 Apr. 2013. <http://www.iadms.org/associations/2991/files/info/turnout_for_dancers_anatomy.pdf>.
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