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The concept of Dual Mobility, invented in 1975 by Professor Gilles Bousquet of Saint-Etienne University Hospital, France, and Mr André Rambert, founder of SERF, is based on two basic principles in orthopaedics:

  • The Charnley principle which recommends using a significant thickness of polyethylene and a Ø 22.2 mm femoral head in order to reduce frictional torque.
  • The McKee – Farrar principle which recommends the use of a large-diameter femoral head to reduce the risk of dislocation and prosthetic instability.

Dual Mobility design has two articulations:

  • first mobility: small articulation (head in the insert)
  • second mobility: large articulation corresponding to the mobility of the insert in the cup.

Recognised as an effective solution for preventing dislocation in primary and revision surgery, the concept has also gained worldwide renown in the orthopaedic community in recent years.

With its Novae® range, SERF offers a range of products backed by over 40 years of clinical experience and more than 300,000 cup implants.