cadera / hip - Active Congress.......

MARTES / TUESDAY
74
11.20 - 18.55 h
CADERA / HIP
Fijación de los componentes protésicos
Fixation of the prosthetic components
Moderadores / Moderators: Eduardo García-Cimbrelos, James Richardson, Charles Engh
CEMENT OR
CEMENTLESS FIXATION
R. Geesink
University Hospital Maastricht, Netherlands
ROLE OF THE CEMENT IN
THE FIXATION OF THE
PROSTHETIC COMPONENTS
J. Timperley
Princess Elisabeth Orthopeadic
Hospital, Exeter, UK
CHARNLEY LOW-FRICTIONAL
TORQUE ARTHROPLASTY
– 44 YEARS OF CLINICAL
EXPERIENCE:
B. M. Wroblewski, P. D. Siney,
P. A. Fleming
The John Charnley Research Institute,
Wrightington Hospital, Hall Lane,
Appley Bridge Near Wigan, U.K.
Charnley low-frictional torque arthroplasty
(LFA) was introduced into clinical practice in
November 1962 and to date over 35,000 have
been carried out at Wrightington Hospital.
The concept has remained, but modifi cations
and improvements and changes in the design
have been an integral part. The longest
surviving patient with a bilateral LFA that is
still attending and has not needed a revision
has just passed 40 years of clinical success.
Long-term follow-up naturally selects
only young patients where activity level, life
expectation and demand on the arthroplasty
is high. Forty-four patients (50 LFAs) have
now passed 30 years of follow-up. Their
mean age at surgery was 47.5 years (22-
65). Clinical results remain excellent. Mean
cup penetration was 0.06mm/year – high
wear was incompatible with long-term success.
Proximal strain shielding was the main
problem on the femoral side, but endosteal
cavitation did not occur if the stem was distally
unsupported by cement.