Plastic Acetabular Cup Over Ceramic

Acetabular cup contains a shell and a liner.

Plastic acetabular cup over ceramic. Since the introduction of the low friction total hip arthroplasty tha by sir john charnley wear has been a primary issue in hip arthroplasty. 1 significant improvements have been made in the bearing surface. Early attempts at hip replacement were made as far back as 1891 using ivory and the first hip replacement using metal components was in 1940. A modular acetabular cup assembly 10 100 200 300 350 for use with multiple bearing liners 32 110 212 310 354 is disclosed.

Firmly tap the inserter with a mallet until the cup is fully seated. The ball replacement for femoral head will be attached to the stem. The implant comprises of acetabular cup and femoral head. They all have their own advantages and disadvantages not just because of the choice of material but also the sizes that the femoral head and cups will get in the different configurations.

A total hip replacement has two components the acetabular cup and the femoral implants thigh bone and ball. The shell 12 may be used with polyethylene ceramic metal and other types of liners. Over the past 25 years cementless acetabular components have become increasingly popular for use in total hip arthroplasty tha. Polyethylene liner thickness ram.

The pinnacle acetabular cup system metal on metal version 48 66 mm. The acetabular cup assembly includes a shell 12 having a tapered inner wall 28 and two circumferential grooves 24 26. Over the past 25 years patients who have needed to have their hip joint replaced either due to trauma or arthritic disease typically have had their hip joint bone articular surfaces replaced with a metal hip stem metal ball head either stainless steel or chrome cobalt and a plastic acetabular cup metal metal plastic. The cup system was available in five different combinations of materials ceramic on plastic.

During hip replacement surgery worn out acetabular component femur head or both may be replaced and these implants may be made up of different materials. The position of the acetabular shell is. Charnley s original choice for bearing surfaces was a stainless steel head on polytetrafluoroethylene ptfe. Spectron ef and opti fix cups 111 femoral acetabular cup size ram head sizes 44 45 46 48 50 54 56 60 63 70 22 5 6 8 10 12 26 3 4 6 8 10 28 3 5 7 9 32 3 5 7 data from smith nephew orthopaedics memphis tn.

The pinnacle acetabular cup system allows more flexible options for a surgeon in terms of the size of the acetabular portion of a total hip replacement system. Catastrophic failure of ceramic polyethylenetha simon et al.