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99.9% 5 Year Midterm Survival of
the Pinnacle" Multi-liner Acetabular Cup
in a Prospective Multi-Center Study
A single acetabular system that accommodates
a variety of liner and head size options can be
advantageous in Total Hip Arthroplasty.
Methods.
Mean Harris Hip Scores
1 183 Primary, Consecutive, Multi-liner, Acetabular,
Pinnacle" Cup THA's
Performed between 2000 & 2006
Metal-on-Polyethylene
16 Surgeons
. 9 different cemented & uncemented stems implanted
463 left, 546 right, 87 bilateral
. Mean follow-up: 2 years
Total patients: 1, 183 (622 females, 561 males)
. Mean age 62 (range: 18 to 91)
Mean BMI: 30 (range: 16 to 65)
Results:
. At 5 years, acetabular cup survival Was 99.9%
0% aseptic loosening
. 17 dislocating hips:
- 76% (28mm heads)
18%(32mm heads)
- 6% (36mm heads)
11 re-operations where a stable cup was retained
Mean Flexion Scores
- 5 hips treated conservatively
Metal-on-Metal
- 1 hip revised for instability at 2 weeks post-op
. 12 Additional re-operations.
- 5 Hematomas
3 Femoral fractures
- 2 Stem loosenings
1 Superficial infection
:::1 modulus mismatch
Conclusion:
Outstanding mid-term survival
. Differences between patients, surgeons, femoral stems,
head size, & articulation types did not affect survival
Re-operation for instability was aided by an acetabular
system that accommodates a variety of liner & head
size options
11 Out of 12 re operations for dislocations, stability
Ceramic-on-Polyethylene
achieved with cup retention
Study conducted by
Valley Cithe Associate
Proliance Surgeons
Cast ( 4 EN Orthopaedic Center of : Jordan Young
Renton. WA USA
:Orthopaedics, Inc.
Warsaw. IN. USA
Fort Collins, CO. USA
Virginia Bee
ON
never stop moving
DePuy
Orthopaedics Ina.
a Johnionofohmion company
PROTECTED DOCUMENT. DOCUMENT SUBJECT TO PROTECTIVE ORDER.
DEPUY000529087
P-00937-00001
Source: https://www.industrydocuments.ucsf.edu/docs/gmwn0226

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