21. To combat loosening caused by polyethylene wear debris, hip manufacturers developed improved and novel materials for the acetabular liners. 22. The "'acetabular notch "'is a deep notch in the acetabulum of the hip bone. 23. Impingement occurs when the femoral head rubs abnormally or its lacks a full range of motion in the acetabular socket. 24. In less than 5 % of cases, the THR will malfunction through loosening of the acetabular cup or femoral fracture. 25. In July 2014, he was placed on the season-ending injured reserve list due to a torn acetabular labrum. 26. Harris was one of the two designers to create the first successful cementless acetabular component to fix it to the skeleton. 27. Open one box and find a plastic hip socket, called an acetabular shell, that shattered and had to be retrieved. 28. The second deformity is referred to as a pincer deformity and it is due to an excess growth of the acetabular socket. 29. Harris is also recognized for performing the world's first successful total hip replacement in a patient with a acetabular component. 30. The notch is converted into a foramen by the transverse acetabular ligament; through the foramen nutrient vessels and nerves enter the joint.
