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Shorter Stem Hip Arthroplasty:
An evidence -based discussion

Shorter Stem Hip Arthroplasty:
An evidence -based discussion

jri orthopaedics

Interactive educational webinar on the critical design elements of a successful uncemented femoral implant and how it has evolved to suit contemporary MIS techniques.

Date: Wednesday 16th September
Time: 18.00
Duration: 70 minutes

Prof. Justin Cobb,  Dr Daniel Donaire, Prof. Gunnar Flivik, Mr Johan Witt

Event details

Learn why you would choose a short uncemented stem for hip arthroplasty patients and how an anterior approach can reduce recovery time and minimise scarring. Interact with Professor Justin Cobb, Dr Daniel Donaire, Mr Gunnar Flivik and Mr Johan Witt as they share their philosophies and technique for bikini incision anterior hip replacement.

Learning Objectives

By the end of this educational presentation delegates should be able to:


  • Understand the critical design criteria of a successful short uncemented femoral stem.
  • Identify patients that may be suitable for a short uncemented femoral stem design.
  • List the recommendations for achieving successful total hip replacement with a short stem implant.
  • Identify key surgical factors that support faster recovery times with an anterior approach.
  • Recognise and plan for the potential learning curve associated with an anterior approach.


Prof Justin Cobb

Professor Cobb studied medicine at Magdalen College Oxford, graduating in 1982. He trained in Oxford, London and Brighton.  He wrote his master’s thesis on ‘Prognostic factors in operable osteosarcoma’. In 1991 he was appointed consultant orthopaedic surgeon at The Middlesex. He was awarded a Hunterian Professorship in 1992. After 15 years as a consultant at UCLH and Hon Sen Lect at UCL, he joined Imperial as chair of orthopaedics in 2005

His principal research interests are in the fields of :
• the use of advanced technology to ensure accuracy and precision in surgery
• modelling joint surfaces in early joint disease, and the design of less invasive and better functioning devices  
• functional assessment of the injured joint and cost utility analysis.
As chair of Orthopaedics, and clinical lead at hospital, Professor Cobb leads a team of surgeons, investigators and educators training both under- and post-graduate students in surgical skills and the use of IC developed computer based and robotic technologies to improve outcomes.
Professor Cobb is advisor to the board of Stanmore Implants, a spinout from UCL. He is a civilian advisor in orthopaedics to the Royal Air Force. He is on the staff of  King Edward VII hospital for Officers, and is Orthopaedic Surgeon to Her Majesty the Queen.


Prof Gunnar Flivik

Gunnar Flivik is an Associate Professor in the Department of Orthopaedics at Lund University in Sweden.

Gunnar has written over 40 articles and is actively engaged in the study of Revision Hip Arthroplasty and other fields of joint arthroplasty.

Gunnar is project manager of Lund University’s Hip and Knee Joint Arthroplasty Research Group. The Group is studying different factors involved in the fixation and function of prosthesis components, how to optimize the biomechanical joint conditions during surgery, and evaluating new prosthesis designs and concepts including surgery assisted by computer navigation.

Gunnar’s special interests include osteoarthritis, knee and hip arthroplasty, Radiostereometry (RSA) and gait analysis. He also sits on the editorial board of Orthopaedics Today Europe.

Mr Johan Witt

Dr Daniel Donaire

Dr. Donaire received a degree in Medicine and Surgery from the University of Salamanca in 2003. His training as a specialist in orthopedic surgery and traumatology took place at the Virgen de las Nieves University Hospital in Granada (2004-2009).

Dr. Donaire performs hip surgery as his main area of work, encompassing hip arthroscopy, primary hip prostheses in both the young and the elderly, joint replacements in high hip dysplasias, complex revision surgery of hip prostheses, etc. He also performs lower limb trauma surgery including pelvic fractures.

As a research aspect, his collaboration in the development of surgical instruments for arthroplasties stands out and he also carries out clinical research in collaboration with the University of Granada.

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