The sciatic notch is one of the largest and most important anatomical structures in the hip joint. It is a depression on the front surface of the pelvis that allows the femur to connect to the sacrum.
The sciatic notch has the shape of a triangle, the base of which faces the front of the pelvis, and the apex faces the back. It is located between the greater trochanter of the femur and the sacral promontory.
The length of the sciatic notch is about 10 cm, and its width can reach 5-6 cm. At the top, the notch is limited by the ischial tuberosity, and at the bottom - by the ischial spines.
An important element of the sciatic notch is the ischial tuberosity, which is a protrusion on the lower surface of the sacrum. It protrudes into the sciatic notch and serves as the attachment site for the gluteal muscle.
In addition, the ischial notch serves as a junction with the sacrotuberous ligament, which connects the ischial spines to the sacrum. This ligament provides stability to the hip joint and prevents it from moving during walking.
However, if the sciatic notch is too large, it can lead to various problems. For example, too much depression can lead to imbalance and mobility in the hip joint, as well as the development of arthrosis.
Overall, the sciatic notch is an important anatomical structure in the hip joint and plays an important role in stability and movement. However, its size can affect the health and functionality of the hip joint, so it is important to monitor its size and condition.
**The ischial notch is large (the greater ischiopubic notch)** The ischiopubic notch consists of the ischial tuberosity and the ischial spine. It is one of the largest bones of the pelvis. On the front surface of each ischium is the ischial tuberosity. On the free edge of these bones there are sciatic notches, at the junction of which there is the largest bone involved in the formation of the pelvic ring - the ischium of the thigh. The ischial tuberosity is adapted for the attachment of the long sciatic rami of the femur and the gluteal muscle.
**Facial surface of the seat (os ischii)** It is a concave surface. The origin of the ischial spines ends. There is a small depression here, forming a hook extending to the pubic spine, the end surface of which is also concave. On this surface there are thin traces of fusion of the sacral and ischial bones. An arched line formed by the ligaments of the round ligaments stretches parallel to the ischium; it separates the right and left bones and serves as a guide