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.

FIND US AT

Mount Elizabeth Medical Centre
3 Mount Elizabeth #04-07
Singapore 228510
+65 6737 0558 (Office hours)
+65 9727 8528 (After office 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 6247 7958 (Office hours)
+65 9125 8585 (After office hours)

Mount Elizabeth Novena Specialist Centre
38 Irrawaddy Road #04-26
Singapore 329563
+65 6734 0378 (Office hours)
+65 9088 3029 (After office hours)
GET IN TOUCH

DR KEVIN LEE
(Mount Elizabeth & Mount Elizabeth Novena)

Hip & Knee Replacements, Sports Injuries, Cartilage Repair
+65 6737 0558 (Office hours)
+65 9727 8528 (After office 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 6247 7958 (Office hours)
+65 9125 8585 (After office hours)

DR VICTOR SEAH
(Mount Elizabeth Novena & Parkway East)

Foot & Ankle, Trauma & Fractures
+65 6734 0378 (Office hours)
+65 9088 3029 (After office hours)

DR TAY GUAN TZU
(MOUNT ELIZABETH NOVENA)

PAEDIATRIC ORTHOPAEDICS, FOOT & ANKLE, MINIMALLY INVASIVE SURGERY, DEFORMITY CORRECTION WITH FRAMES
+65 6734 0378 (Office hours)
+65 8699 8811 (After office hours)
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Pinnacle Orthopaedic Group 2016