POSTER ABSTRACTS - ISAKOS

evaluate the clinical results and return to their
sports activity in these patients.
Materials and Methods : ACL injured 56 amateur
athletes who had experienced sports 3 times a
week more than 5 years, reconstructed with
Achilles allograft, and it was analyzed subjective
and objective parameter, Tegner scoring, Telos
stress arthrometer, Lysholm Knee Scoring System
and modified Feagin scoring system. The average
age was 25 years old (range:18~49), the average
follow up period was 15 months (range 12~19).
Morbid sports were football (29 cases), basket ball
(14 cases), badminton (5 cases), tennis (3 cases),
squash (2 cases) and otherwise (3 cases).
Result : The mean Lysholm Knee Scoring System
was improved to 88.2 from 60. Telos arthrometer
in anterior stress test revealed 2.3 mm improved
from 7.1 mm. The modified Feagin scoring system
showed 50 cases (89%) with excellent and good
results. We had obtained 12 cases (21%) of Tegner
score VI, 32 cases (57%) of score V, 20cases (35%)
of score IV, 3(5.3%) cases of score III.
Conclusion : Reconstruction of anterior cruciated
ligaments can restore stability sufficient to allow
sports activity in ACL injuried patients, but it’s
difficult to achive normal sports activity. So we
will have to solve the reasons of this
dissatisfaction at furthermore.
Key Words : ACL reconstruction, Achilles allograft,
Sports activity recovery
E-poster #360
A New Double Bundle Anterior Cruciate
Ligament Reconstruction with Hamstrings
Using the Posteromedial Portal Technique
Arai Yuji, Kyoto, JAPAN, Presenter
Hara Kunio, Kyoto, JAPAN
Ginjiro Minami, Kyoto, JAPAN
Urade Hidenori, Kyoto, JAPAN
Hirai Naofumi, Kyoto, JAPAN
Ohta Mitsuhiko, Kyoto, JAPAN
Watanabe Nobuyoshi, Kyoto, JAPAN
Kubo Toshikazu, Kyoto, JAPAN
Dept of Orthop, Kyoto Prefectural Univ of
Medicine, Kyoto, JAPAN
We established a new double bundle
reconstruction method for ruptured anterior
cruciate ligament using the posteromedial portal
technique. Reconstruction substitutes are
semitendinosus(ST), and gracilis (G) tendons. ST
is fixed for anteromedial bundle (AMB) in the
tunnels produced on the tibia and the femur. G is
fixed for posterolateral bundle (PLB) in the same
tibial tunnel and the femoral tunnel created using
the posteromedial portal. These procedures are
performed using the inside-out technique. The
posteromedial portal provides an accurate access
to the PLB femoral attachment. This surgical
technique can avoid the overlap of the both
femoral tunnels and the destruction of the
posterior cortex of the femoral lateral condyle
during preparation of PLB. Both femoral tunnels
can be created utilizing only one tibial bone
tunnel for preparation of AMB.
E-poster #361
Elucidation of a Potentially Destabilizing
Control Strategy in ACL Deficient Non-Copers
Terese L. Chmielewski, Gainesville, FL, USA,
Presenter
Wendy J. Hurd, Newark, DE USA
Lynn Snyder-Mackler, Newark, DE USA
University of Delaware, Newark, DE, USA
Introduction: Most active individuals with a
ruptured anterior cruciate ligament (ACL)
experience knee instability and difficulty
participating in physical activity (non-copers).
Non-copers implement a compensatory
stabilization strategy that involves reducing the
range of motion and increasing co-contraction
across the knee to stiffen and quasi-statically
stabilize the knee. Complex neuromuscular
control strategies appear to be responsible for the
ability of some individuals to dynamically
stabilize their knees and return to high-level
activities without surgery (copers). Copers have
knee kinematics and kinetics that are similar to
uninjured subjects, and use phasic, targeted
muscle activity to avoid functional instability.
Potential copers, those individuals identified early
after injury as having good potential to
dynamically stabilize the injured knee, display
characteristics that are intermediate between
copers and non-copers. The purpose was to
differentiate the dynamic knee stabilization
strategies of potential copers and non-copers.
Methods: Twenty subjects with ACL rupture were
assigned to potential coper (n = 10) and noncoper
(n = 10) groups via a screening examination.
Ten active people without lower extremity injury
were also tested. Knee angle, tibial position and
muscle activity data were collected while subjects
stood in unilateral stance on a platform that
moved horizontally in an anterior direction.
Analysis included the preparation for platform
movement; and short-loop, intermediate reflex