POSTER ABSTRACTS - ISAKOS

the time of the checkup. The index of convexity(IC)
of the tibial lateral condyle is equal to the height
from the joint line of the mid-sagittal section to
the top of the condyle divided by the length of the
joint line.
< Results > In the control group, there was no
statistically significant difference in IC between
males and females. The mean IC for females was
0.187 for the bilateral group, 0.175 for the
unilateral group, and 0.143 for the control group
(P < 0.05). The mean IC for males was 0.161 for the
unilateral group, and 0.126 for the control group
(P < 0.05).
< Discussion > IC was higher for the ACL rupture
group, than for the control group. The tibial and
femoral articular surfaces can be divided into
anterior and posterior segments. The femoral
articular surfaces contact to the posterior
segment of tibial articular surface from 20 ±10
degree to 120 degree of flexion. The femur can
easily move to the back when the knee is bent. We
hypothesize that the lateral femoral condyle then
slides down to the posterior of the tibial lateral
condyle resulting in ACL rupture, particularly if
the IC is high. The degree of convexity of the
lateral tibial condyle appears to be an intrinsic
risk factor of non-contact ACL injury.
E-poster #320
Reconstruction of the Anterior Cruciate
Ligament Using Mid-Third Patellar Tendon -
Evaluation of Quality of Life Measures After 1-
15 Year Follow-Up
Joicemar Amaro, Sao Paulo, BRAZIL
Benno Ejnisman, Sao Paulo, BRAZIL
Cristiano Frota de Souza Laurino, Sao Paulo,
BRAZIL
Rogerio Carvalho, Sao Paulo, BRAZIL
Kleber Nakano, Sao Paulo, BRAZIL
Maria Stella Peccin, Sao Paulo, BRAZIL
Rogerio Teixeira Da Silva, Sao Paulo, BRAZIL
Moises Cohen, Sao Paulo, BRAZIL, Presenter
University of Sao Paulo, Sao Paulo, BRAZIL
Background: there are many publications on ACL
reconstruction but few studies with a 10-15- year
follow-up.
Purpose: to evaluate return to sports level
associated with subjective generic quality of life
(SF-36 and Lysholm) and objective (IKDC)
indicators for the knee after a 10-15- year followup.
Study design: retrospective study.
Methods: 62 patients were evaluated on LCA
reconstruction after 10-15- year follow-up by
means of physical test, functional test, KT1000
arthrometer. XR and SF-36, Lysholm score and
IKDC.
Results: mean of Lysholm score was 89.3,
Lachman test negative in 27.4%, (1+) in 40.3%.
Pivot shift test was negative in 33.9% and 56.5%
slight (+). In the KT1000, 32.3% of the patients had
a level above 3mmm. Subjective satisfaction level
was 91.9%. By the objective IKDC, 50% of the
patients were almost normal (B), 37.1% abnormal
and 12.9% very abnormal. Return to the same
sports occurred in 66.1% of the patients, change of
sports in 16.1 and no return in 17.7%.
Conclusions: generic and specific indicators of
quality of life for the knee are less strict than the
objective indicators. The best levels of return to
sports corresponded to the best degrees of
protocols of subjective and objective evaluations.
E-poster #321
Self-Efficacy Beliefs in Patients with an ACL
Injury
Pia Thomee, Goteborg, SWEDEN, Presenter
Mats Borjesson, Goteborg, SWEDEN
Bengt Eriksson, Goteborg, SWEDEN
Jon Karlsson, Goteborg, SWEDEN
Roland Thomee, Goteborg, SWEDEN
Peter Wahrborg, Goteborg, SWEDEN
Dept of Orthopaedics, Goteborg, SWEDEN
The emotional reaction to an anterior cruciate
ligament (ACL) injury seem to have important
implications not only for the injured athlete’s
subjective well-being, but also for their
rehabilitation behavior and clinical outcome
(Brewer 1994, Wiese-Bjornstal et al 1998). Athletes
have cited the fear of reinjury as a salient emotion
associated with resuming sports participation
(Bianco et al 1999, Johnston and Carroll 1998).
The patients perceived self-efficacy and outcome
expectations are according to Crossman (2001)
the most predictive factor for patient behavior
after an injury. Self-efficacy is a belief in one’s
potential ability to carry out a task, rather than a
measure of whether or not one actually can or
does perform the task. The purpose of this study
was to describe self-efficacy beliefs, as measured
with the new instrument Knee Self-Efficacy Scale
(K-SES), in patients with an ACL injury both
before and after surgery. The study is part of a
larger prospective project on patients with ACL
injury aiming for establishing criteria to return to