Osteology of Hip bone I Side side determination | Anatomical Position | Attachments | Applied

Summary

This educational video delves into the anatomy of the hip bone, also known as the innominate bone, highlighting its role in forming the pelvic girdle. It discusses the three main parts of the hip bone: the ilium, pubis, and ischium, and their fusion to form the acetabulum. The script explores the hip bone's articulations, including the pubic symphysis joint, sacroiliac joint, and the hip joint with the femur. It also covers the ilium's features, such as the iliac crest and its various attachments for muscles and ligaments, providing a comprehensive understanding of the hip bone's structure and function.

Takeaways

• 🦴 The hip bone, also known as the innominate bone, is an irregular bone that forms part of the pelvic girdle.
• 🔗 The hip bones, along with the sacrum, create the pelvic girdle, which is crucial for supporting the body's weight and protecting the pelvic organs.
• 🧩 Each hip bone is composed of three parts: the ilium, pubis, and ischium, which together contribute to the structure of the hip.
• 🍽️ The acetabulum is a cup-shaped hollow structure formed by the fusion of the three parts of the hip bone, serving as a socket for the head of the femur.
• 🕊️ The hip bone articulates with other bones in various ways, including the pubic symphysis, sacroiliac joint, and the hip joint with the femur.
• 🧭 The ilium is the uppermost part of the hip bone, characterized by its flat and expanded nature, and has distinct anatomical landmarks.
• 🏞️ The iliac crest, part of the ilium, extends from the anterior superior iliac spine to the posterior superior iliac spine and has various muscular attachments.
• 🌟 The ilium's anterior superior iliac spine is a key landmark for identifying the side of the hip bone and has clinical significance in certain medical procedures.
• 💪 Muscular attachments on the ilium include the gluteus maximus, medius, minimus, and the iliacus, each playing a role in movement and stability.
• 🔍 The sacropelvic surface of the hip bone includes areas for articulation with the sacrum and attachment sites for muscles and ligaments.
• 👍 The video provides a comprehensive overview of the hip bone's anatomy, highlighting its importance in the skeletal and muscular systems.

Q & A

What is another name for the hip bone?

The hip bone is also known as the innominate bone.

What does the hip bone form part of in the human body?

The hip bone forms part of the pelvic girder, along with the sacrum and the other hip bone.

How many parts is each hip bone composed of?

Each hip bone is composed of three parts: the ilium, pubis, and ischium.

What is the function of the acetabulum in the hip bone?

The acetabulum is a cup-shaped hollow structure that fuses the three bones of the hip and articulates with the head of the femur to form the hip joint.

What type of joint is the pubic symphysis?

The pubic symphysis is a secondary cartilaginous joint.

What is the sacroiliac joint and what type of joint is it?

The sacroiliac joint is formed by the articulation of the hip bone with the lateral end of the sacrum and is a plane variety of a synovial joint.

How can you determine the side of the hip bone you are holding?

The side of the hip bone can be determined by observing the ilium's flat expanded part, the acetabulum's facing direction, and the location of the obturator foramen.

What are the two ends of the ilium and what are their functions?

The two ends of the ilium are the superior and inferior ends. The superior end forms the iliac crest, while the inferior end fuses with the pubis and ischium at the acetabulum.

What are the three borders of the ilium and what are their attachments?

The three borders of the ilium are the anterior, posterior, and medial borders. They provide attachments for various muscles and ligaments, such as the sartorius muscle, the gluteus maximus, and the erector spinae muscle.

What are the three surfaces of the ilium and their respective functions?

The three surfaces of the ilium are the gluteal surface, the iliac surface, and the sacropelvic surface. They provide origins for muscles like the iliacus and the piriformis, and form parts of the sacroiliac joint.

What is the significance of the posterior superior iliac spine in terms of anatomical landmarks?

The posterior superior iliac spine is significant as it lies at the level of the L5 vertebra, marking the end of the subarachnoid space.