Triradiate cartilage
Triradiate Cartilage
The Triradiate Cartilage is a Y-shaped structure in the human pelvis that separates the iliac bone, ischium, and pubis. It is a significant anatomical feature in pediatric orthopedics and plays a crucial role in the growth and development of the pelvis.
Etymology[edit | edit source]
The term "triradiate" is derived from the Latin words "tri" meaning three, and "radiatus" meaning having rays. This refers to the three branches of the cartilage that extend towards the iliac, ischium, and pubis.
Anatomy[edit | edit source]
The triradiate cartilage is located in the acetabulum, the socket of the hip joint. It is composed of three sections of cartilage that converge to form a Y-shaped structure. These sections are the iliac, ischial, and pubic cartilages, each named for the bone they connect to.
Development[edit | edit source]
The triradiate cartilage plays a significant role in the growth and development of the pelvis. It allows for the expansion of the acetabulum and the overall growth of the pelvis until it fuses in late adolescence. The timing of this fusion can vary, but it typically occurs between the ages of 14 and 16 in girls and 16 and 18 in boys.
Clinical Significance[edit | edit source]
The triradiate cartilage is a critical landmark in pediatric orthopedics. It is used to assess skeletal maturity and the potential for further growth in the pelvis. Conditions such as hip dysplasia and Perthes disease can affect the triradiate cartilage, impacting its growth and development.
Related Terms[edit | edit source]
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Contributors: Prab R. Tumpati, MD
