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Find your Surgeon

Polymotion® Hip Resurfacing

Polymotion® is an advancement to previous generations of HRA with novel design features.  The PHR® is an evolutionary hip resurfacing system that applies novel fixation and provides the low wear bearing performance of proven advanced polyethylene components, negating any of the perceived risks associated with hard-on-hard articulations.  

The PHR® System is a single use device intended for hybrid fixation. The femoral head is secured to the ball joint using bone cement, and the acetabular cup is press-fit into the socket with a porous titanium coating for bone on-growth.

The PHR® System consists of:

  • a femoral head component to resurface the ball of the hip joint

  • an acetabular cup component to resurface the socket of the hip joint. 

Polymotion Acetabular Cup

*PHR® Acetabular Cup

Polymotion Head

*PHR® Femoral Head

Polymotion Hip Resurfacing Device

Are you the right candidate? 

The PHR® System is intended for use in patients requiring primary hip resurfacing arthroplasty due to:

  • Non-inflammatory arthritis (degenerative joint disease) or dysplasia/developmental dislocation of the hip (DDH), or;

  • Inflammatory arthritis such as rheumatoid arthritis.

Intended Patients 

The PHR® System is particularly intended for adults who, due to their relatively younger age or increased activity level, may not be suitable for traditional total hip replacement due to an increased possibility of requiring future hip implants on the same side.

Surgery should be avoided during pregnancy.

There are no tests that demonstrate the device is safe for use in children. The implant should only be used in skeletally mature individuals.

Meet the Surgeons 

At JointMedica our mission is to improve the health and well-being of people around the globe through the development of cutting-edge medical devices, below is a list of surgeons who are fully trained and approved to use the PHR device. 

New Zealand

Bill Farrington

Mr Bill Farrington, MBBS (Lond) FRCS (Eng) FRCS (Tr & Orth) FRACS

Mr Farrington qualified in London, and has worked in the UK, Australia and South Africa before completing specialist Orthopaedic Training in the South West of England. Mr Farrington settled in New Zealand in 2003 to pursue his interest in joint replacement surgery as a Fellow, and then as a Consultant. From 2007, Mr Farrington opened his own specialist hip and knee practice, currently working in both the public and private sector. 

Dr. Hugh Blackley, BSc, MBChB, FRACS

Dr. Hugh Blackley is a New Zealand trained surgeon with overseas subspecialty training in lower limb surgery. He was was involved in the first use of computer assisted surgery (CAOS) and carried out the first minimally invasive surgery (MIS) joint replacement surgery and hip resurfacing in New Zealand. 

Dr. Blackley has been an orthopaedic specialist at Auckland City Hospital since 1999, and has also been in private practice since 1999. 

Hugh Blackley
Jacob Munro

Dr. Jacob Munroe,  MBChB, FRACS

After training as an Orthopaedic Surgeon in New Zealand, Dr Jacob Munroe undertook fellowships at the Royal Adelaide Hospital in South Australia and then at Vancouver General Hospital in Canada before returning to a Consultant position at Auckland City Hospital. 

Dr. Munroe specialises in hip and knee joint replacement, focusing on complex primary and revision surgery. Dr. Munroe also has a strong interest in managing hip problems in young patients and performing reconstructive procedures. 

Need more information? 

Visit Surface Hippy, a website and online community that provides information and support to people who are considering or have undergone hip resurfacing surgery. Patricia Walter has been an active member of the hip resurfacing community for over 17 years and has contributed her knowledge and experience to help patients and individuals seeking information about hip resurfacing.

If you have specific questions or need more information about  hip resurfacing, you can visit the Surface Hippy website and explore the resources and discussions available there.


Initially set up as a patient guide, the website has continued to grow over the years, now featuring medical articles about hip resurfacing, hundreds of patient stories, frequently asked questions and surgeon information.

Helpful links:

Pat Walters Surface Hippy

*Patricia Walter founder of SurfaceHippy. 

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