Cruciate anastomosis

The cruciate anastomosis (Trochanteric anastomosis; Collateral circulation at the hip joint.) is an arterial vascular network located at the posterior aspect of the hip joint, primarily involving the femoral neck and the proximal femur.

The arteries involved in the cruciate anastomosis include:

1. Inferior gluteal artery: This artery contributes to the anastomosis from the posterior aspect.

2. Medial circumflex femoral artery: This artery is a major contributor, providing branches that participate in the anastomosis.

3. Lateral circumflex femoral artery: This artery also contributes branches to the anastomosis.

4. First perforating artery of the profunda femoris: This artery provides additional branches that integrate into the anastomosis.

These arteries form a network around the femoral neck, ensuring that the hip joint receives adequate blood supply even if one of the primary arteries is obstructed. This vascular arrangement is particularly important in maintaining the viability of the femoral head and preventing avascular necrosis, especially following trauma or surgical interventions.