An Oscar for the orthopedic surgeons at the Hôpital Maisonneuve-Rosemont

    MONTREAL, Feb. 25 /CNW Telbec/ - A clinical research team of orthopedic
surgeons from the Maisonneuve-Rosemont Hospital Research Centre will be
honoured with the Hip Society's John Charnley Award, the most prestigious
award in the field of hip surgery.
    True North American pioneers in the development of new knee and hip
replacement technologies, Drs. Pascal-André Vendittoli, Martin Lavigne, and
Alain Roy, in collaboration with kinesiologists Marc Therrien, Julie Nantel,
and François Prince, have carried out an important study assessing the
performance of hip resurfacing surgery compared with total hip replacement
using large-diameter heads. Their award will be presented on February 28,
2009, in Las Vegas.
    "It's the highest honour that we could have ever expected to receive,"
said Dr. Vendittoli as he acknowledged his entire team.

    Much less invasive than a total hip replacement

    Dr. Roy, Dr. Vendittoli and Dr. Lavigne were the first in North America
to introduce the use of a hip resurfacing prosthesis back in 2003. The
Durom(R) prosthesis, which they used, is a small metal cup that is placed on
the femoral head. It is used as an alternative to a total hip prosthesis,
which is usually implanted in the femur. Hip resurfacing is hugely
advantageous because it is bone-conserving and much less invasive than a total
hip replacement.
    For the first time, these studies provide solid scientific data
highlighting the pros and cons of new joint replacement implants for active
young subjects.
    In a first two-year study, researchers conducted a comparative on hip
resurfacing and total hip prostheses with metal on metal surfaces of 28 mm.
Their findings revealed that hip resurfacing demonstrated some functional
superiority and little chance of luxation. This study will be published in the
American Journal of Bone and Joint Surgery in 2009.
    Researchers took their investigation one step further with a second study
in which they conducted a comparative on hip resurfacing and total hip
prostheses with metal on metal surfaces of large diameter. It is this second
study that is being recognized with the John Charnley Award. The study was
conducted without any of the patients' or examiners' knowledge of which
implant was used. Sophisticated methods such as Vicon cameras were used to
examine all of the patients in the Ambulation Clinic. The study showed that
both groups received equivalent results after six months, and concluded that
the single advantage of hip resurfacing over total hip prostheses of large
diameter is femoral conservation.
    Arthrosis of the hip joint, or coxarthrosis, is the most common joint
disorder after arthrosis of the knee, afflicting almost 15% of the population.

    About the Hôpital Maisonneuve-Rosemont

    The Hôpital Maisonneuve-Rosemont is a hospital centre affiliated with
Université de Montréal for the provision of care, teaching, and scientific
research. It has achieved international recognition for its work in
orthopedics, specializing in the assessment of new joint replacement

For further information:

For further information: Pascal Mailhot, Director, External
communications, (514) 942-0186

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