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Orthopedist cites advantages of custom-fit TKA
with guides
Link
http://www.orthosupersite.com/view.asp?rID=25732
January 2008
LAHAINA, Hawaii - Performing total knee arthroplasty using
custom-fit femoral and tibial cutting guides can be effective for
restoring natural alignment and motion to a valgus knee, said one
surgeon, Stephen M. Howell.
This custom-fit total knee arthroplasty (TKA) approach is also
effective at aligning the knee naturally similar to that of the
Oxford knee (Biomet), preserving the ligaments, including the PCL
and restoring ligament length by removing osteophytes, according to
Stephen M. Howell, MD. He discussed these principles at the
Orthopedics Today Hawaii 2008 meeting here.
Howell said orthopedic researchers have long been looking for better
ways to perform TKA.
To perform custom-fit TKA, a surgeon must first create a 3-D
arthritic knee model based on magnetic resonance images. Next, "We
naturally align the 3-D arthritic knee model and shape-match the
femoral and tibial components on the rotational axes," Howell said.
After that, Howell and his colleagues incorporate custom-fit femoral
and tibial cutting guides. In the end, this approach "simplifies the
operating room set-up" because it streamlines the number of tools
and components needed to do the TKA, he said.
Howell said that in more than 1,100 knees implanted nationwide using
the custom-fit approach, custom-fit positioning and naturally
aligning a TKA with the femoral component on the flexion/extension
rotational axis of the femur "restores alignment, motion, comfort
and stability without the need for ligament releases."
Furthermore, "custom femoral and tibial cutting guides give us an
accurate method to perform TKA with good results," he said.
For more information:
Stephen M. Howell, MD, is a co-founder and unpaid consultant for
OtisMed Corp., manufacturer of the OtisKnee.
Howell SM. Custom fit TKA with custom fit femoral and tibial cutting
guides. Presented at Orthopedics Today Hawaii 2008. Jan. 13-16,
2008. Lahaina, Maui, Hawaii.
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