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Replacement hips and knees last as long as 25 years - study


Hip and knee replacements last much longer than previously thought, according to a large-scale study from the UK. It’s a reality that will help both patients and surgeons determine when it is the right time to perform surgery. The study conducted by the University of Bristol analysed 25 years’ worth of operations data involving more than 500,000 patients. It found that eight out of 10 knee replacements (80%) and six out of 10 hip replacements (60%) last as long as 25 years. Until now, little has been known about the true success and longevity of replacement hips and knees – despite them being two of the most common forms of surgery carried out on the NHS. Previously, doctors have been unable to provide accurate estimates as to how long a patient’s replacement hip or knee might last. Now, they are in a much better position to give confident answers when questioned. Speaking about the findings of the research, which were published in The Lancet, Dr Jonathan Evans, orthopaedic registrar, lead study author and research fellow at Bristol Medical School, said: “At best, the NHS has only been able to say how long replacements are designed to last, rather than referring to actual evidence from multiple patients' experiences of joint replacement surgery. “Given the improvement in technology and techniques in the last 25 years, we expect that hip or knee replacements put in today may last even longer.” Follow these links to find out more about minimally invasive hip replacement surgery and minimally invasive knee surgery in France.

Minimally Invasive Hip Surgery


MINIMALLY INVASIVE HIP SURGERY Most of the orthopaedic surgeons you will be directed to, are specialised with minimally invasive hip surgery and have a great experience of these techniques. They routinely use minimally invasive surgery for primary osteoarthritis, osteonecrosis, etc. ... since 2005. Minimally invasive surgery is not just technical reducing the size of the incision, but a real non-invasive techniques without any muscular section. Compared to standard operations, minimally invasive hip surgery reduce complication's rate including a reduction (fewer of than 0.5% of dislocations) and patients benefit from a much faster recovery. This surgery is available in France at any age and with any degree of obesity. It is also suitable for sufferers of osteoporosis. Therefore a return to normal life can be expected within 3 to 4 weeks. Advantages of Minimally Invasive Hip replacement Surgery: Small Incision (3 to 4 inches) Reduced Pain Less muscles trauma Minimal scarring with a better looking scar Reduced risk of dislocation Faster recovery and more rapid return to normal life The hip replacement operation is one of the most reliable and well-tested operations in orthopaedic surgery and a consistent outcome is that it reduces or eliminates the pain of the arthritis in patients. Technique The artificial implants used for the minimally invasive hip replacement procedures are the same as those used for traditional hip replacement. Specially designed instruments are needed to prepare the socket and femur and to place the implants properly. The surgical procedure is similar, but there is less soft-tissue dissection. A single minimally invasive hip incision may measure only 3 to 6 inches. It depends on the size of the patient and the difficulty of the procedure. The incision is usually placed over the outside of the hip. The muscles and tendons are split or detached, but to a lesser extent than in the traditional hip replacement operation. They are routinely repaired after the surgeon places the implants. This encourages healing and helps prevent dislocation of the hip. To perform the two-incision procedure, the surgeon may need guidance from X-rays. It may take longer to perform this surgery than it does to perform traditional hip replacement surgery.

Computer Assisted Hip Replacement


COMPUTER ASSISTED HIP REPLACEMENT More and more French surgeons use computer-assisted navigation technology to perform hip replacement. Hip navigation helps ensure accurate restoration of leg length and offset in total hip replacement. Incorrect positioning of the implant components is the major cause of early joint dislocation, limited range of motion, early implant wear and leg length discrepancies. Hip navigation uses intra-operatively acquired 3D bone and soft tissue patient data for better implant placement. By continuously tracking surgical instruments and virtually guiding component placement, hip navigation overcomes accuracy and reproducibility challenges in standard and minimally invasive hip replacement surgery. Improved positioning of the implant components Accurate restoration of leg length and offset Intra-operative assessment of range of motion Universal and highly accurate instrumentation Improved Positioning of Implant Components Hip navigation’s visual guidance for component placement offers several tools to help lower dislocation rates and better implant conservation. Hip navigation is independent from surgical volumes, making it a powerful tool for quality assurance. Abduction and adduction and anteversion Implant sizing assistance Restoration of native joint centre Verification of full implant seating Anatomical implant placement Easy and Precise Restoration of Leg Length and Offset Managing leg length and femoral offset is critical to a successful total hip replacement surgery.Hip navigation’s leg length and offset control is a measurement tool to precisely and consistently affect these variables without changes in your surgical routine. No patient repositioning required for the posterior lateral approach No extra incision No femoral pin fixation necessary Also available as a standalone leg length-only application Intra-Operative Assessment of Range-of-Motion Limited range-of-motion and component impingement resulting from hip replacement surgery can lead to quality of life issues for the patient and earlier revision surgery. Hip navigation’s intuitive graphical representation offers intra-operative real-time assessment and visualisation of all degrees of movement freedom. Detection and documentation of impingement Recording of range-of-motion maximum value Instant and Precise Hip Navigation with Universal Instrumentation Universal instrumentation enables the orthopaedic surgeon to easily, accurately and reproducibly align implant components during total hip replacement surgery. No cumbersome intra-operative calibration necessary due to the interface Implant-specific inserts to navigate a variety of hip implant vendors Designed for both standard and MIS surgery