Helen Hayes Lower (19)

Helen Hayes Marker Set Front

Helen Hayes Marker Set Back

Waist Markers

Related Segment	Anatomical Location	Additional Description
Pelvis	Left Iliac Anterior Spine Right Iliac Anterior Spine	Place the marker on the protruding bones located on the left and right side of the pelvis front.
Sacrum	Lower spine	Place this marker in the lower spine over the S2 vertebrae.

Lower Extremity Markers

Related Segment	Anatomical Location	Placement Description
Upper Leg	Left Femur Lateral Epicondyle Right Femur Lateral Epicondyle	Place the marker on the lateral prominence of the knee joint axis. More specifically, the marker should be placed on the femur epicondyle. You may need to ask the subject to flex and extend the knee few times to locate the axis.
Upper Leg	Left Femur Medial Epicondyle Right Femur Medial Epicondyle	Place the marker on the Medial prominence of the knee joint axis. Ask the subject to flex and extend the knee few times to locate the knee axis.
Upper Leg	Left Thigh Right Thigh	Place the markers at the front center of the thigh near the midline. This marker is placed for distinguishing left and right side of the Skeleton. For best results, slightly offset the height of right and left marker to introduce an asymmetry.
Upper Leg	Left Superior Knee Right Superior Knee	Place the markers on the shin bone near the midline of the lower leg. This marker is placed for distinguishing left and right side of the Skeleton. For best results, slightly offset the height of right and left marker to introduce an asymmetry.

Foot Markers

Related Segment	Anatomical Location	Placement Description
Lower Leg/Foot	Left Fibula Ankle Lateral Right Fibula Ankle Lateral	Place the maker on the lateral side of the ankle axis; on the lateral prominence of the lateral malleolus bone.
Lower Leg/Foot	Left Talus Ankle Medial Right Talus Ankle Medial	Place the maker on the medial side of the ankle axis; on the medial prominence of the medial malleolus bone
Foot	Left Foot Calcaneus Right Foot Calcaneus	Place the marker on center of the heel, where the Achilles tendon attaches to the calcaneus bone.
Toe	Left Foot 2nd Distal Phalanx Right Foot 2nd Distal Phalanx	Place the marker on the 2nd Distal Phalanx tip.