ORTHOPAEDICS
Robotic Assisted,
Computer Navigated
Total Hip, Total Knee,
and Partial Knee
Replacement
RICHARD V. ABDO, MD
Total hip, knee and partial knee replacements are considered for painful
osteoarthritis of the hip and knee when non-operative treatment fails
to control the patient’s symptoms.
Total Hip Replacement (THR), Total
Knee Replacement (TKR), and Partial
Knee Replacement surgery all involve
resurfacing the damaged arthritic
surfaces with implants. These
implants are typically made of metal
alloys and strong plastic (polyethylene).
HIP REPLACEMENT
The hip consists of a ball and socket
joint. In hip replacement surgery, we
replace the socket, or acetabulum,
with a metal cup. A layer of polyethylene
is inserted into the metal cup
to allow for a smooth gliding surface.
The ball is replaced with a metal
stem inserted into the femoral canal
(thigh bone). A metal or ceramic ball
is attached to the stem.
KNEE REPLACEMENT
The knee has three compartments
– medial (inside), lateral (outside),
and patellofemoral (kneecap). Partial
knee replacement is performed when
only one of these knee compartments
is arthritic. A total knee replacement
is performed when 2 or more of the
knee compartments are arthritic.
COMPUTER PRECISION
Robotic-assisted, computer navigated
replacement of the hip and knee
provides a precise customized plan
based on a preoperative CT scan. The
CT scan is combined with real time
navigation of the patient’s specific
bone anatomy during surgery to provide
accurate and consistent implant
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