 This study examined the complications associated with hip joint endoprostesis for congenital hip dislocation. The results showed that profuse bleeding, femur fractures, corpuscular acetabular layer fractures, sciatic nerve damage, femoral nerve damage, femoral component loosening, polyethylene prosthetic wear, phlebitis and thromophlebitis, and autographed resorption were all observed. Despite these complications, the overall assessment of the endoprostesis by Harris was between 86 and 92 points, indicating good results.