New Hip Replacement Bearing Surfaces

Hip Replacement Bearing Surfaces

Many different types of designs and materials are currently used in artificial hip joints. All of them consist of two basic components: the ball component (made of a highly polished strong metal or ceramic material) and the socket component (a durable cup made of plastic, ceramic or metal, which may have an outer metal shell).

The hip replacement bearing surfaces refers to the surface where the ball meets the socket and this surface has to be very smooth so that hip functions well and lasts for a long time. The bearing surface is a metal head with a special polyethylene known as highly cross-linked polyethylene. This polyethylene has been specially treated so that it is very smooth with very low wear rates, meaning it lasts for a long time if the hip replacement has been put in properly.

Nowadays, besides metal and polyethylene, other pairs of bearing surfaces include the following:

  • Metal head on metal cup
  • Ceramic head on ceramic cup
  • Ceramic head on polyethylene cup

These are known as alternate bearings and have very low wear rates. In recent years, metal on metal bearings have fallen out of favour and several of these products have been recalled from the market and thus, we do not use such products. You can read a technology overview release on metal on metal bearings by the American Academy of Orthopaedic Surgeons.

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Mount Elizabeth Medical Centre
3 Mount Elizabeth #04-07
Singapore 228510
+65 6653 2606 (24-Hours)
+65 6737 0680 (Back & Nerve, Scoliosis Office Hours)
+65 9771 8964 (Back & Nerve, Scoliosis After Office Hours)

Parkway East Medical Centre
319 Joo Chiat Place #03-05
Singapore 427989
+65 6653 2608 (24-Hours)

Mount Elizabeth Novena Specialist Centre
38 Irrawaddy Road #04-26
Singapore 329563
+65 6653 2609 (24-Hours)
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DR KEVIN LEE
(Mount Elizabeth & Mount Elizabeth Novena)

Hip & Knee Replacements, Sports Injuries, Cartilage Repair
+65 6653 2606 (24-Hours)

DR HEE HWAN TAK
(Mount Elizabeth)

Spine, Scoliosis, Neck & Nerve Problems
+65 6737 0680 (Office hours)
+65 9771 8964 (After office hours)

DR ANDY WEE
(Parkway East, Mount Elizabeth, Mount Elizabeth Novena)

Shoulder & Elbow, Sports Injuries, Arthroscopic Surgery Of The Hip & Knee
+65 6653 2608 (24-Hours)

DR VICTOR SEAH
(Mount Elizabeth Novena & Parkway East)

Foot & Ankle, Trauma & Fractures
+65 6653 2609 (24-Hours)

DR TAY GUAN TZU
(MOUNT ELIZABETH NOVENA)

PAEDIATRIC ORTHOPAEDICS, FOOT & ANKLE, MINIMALLY INVASIVE SURGERY, DEFORMITY CORRECTION WITH FRAMES
+65 6653 2611 (24-Hours)
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Pinnacle Orthopaedic Group 2016
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