ischial tuberosity

Pelvic sitting bone

The ischial tuberosity is the bony projection at the base of each hip bone that bears weight when sitting—commonly called the sit bone.

These rounded protrusions at the bottom of the pelvis are where the hamstring muscles attach.

She felt soreness in her ischial tuberosities after the long bike ride.

anatomy

pubis

Anterior pelvic bone

  • hip boneLarge pelvic structure
  • sacrumFused vertebrae above tailbone
  • coccyxFused vertebrae forming tail

pelvic girdle · ramus · tuberosity

attachments

hamstrings

Rear thigh muscles

sitting

sit bones

Pelvic protrusions for sitting

chair · cushion · saddle · cycling · rowing · numbness · padding · contact point · pressure relief · sedentary

biomechanics

hip extension

Thigh moving posteriorly

deadlift · squat · lever arm

clinical

stress fracture

Microscopic bone crack from overuse

injection site · physical therapy · sports injury · overuse injury · rehabilitation · ultrasound · MRI · bone bruise

Categories
Opposites
pelvic bony landmarks

ischial tuberositysacrum

Fused vertebrae above tailbone

coccyx

weight-bearing skeletal structures in different positions

ischial tuberositycalcaneus

Posterior foot bone

scapula · occiput · vertebral column

superior vs inferior pelvic structures

ischial tuberosityiliac fossa

Inner pelvic concavity

Family

tuberous, ischium

Familiarity
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Profile
Used worldwide · Timeless · Concrete · Rated G