POSTER ABSTRACTS - ISAKOS

A notch view provides useful information about
the femoral tunnel o’clock position. The axis of
the femoral tunnel on a notch view could be the
most reliable index on one-incision technique
ACL reconstruction.
E-poster #354
Anterior Cruciate Ligament Reconstruction
Using the Gracilis Tendon
Sung-Gon Kim, Tokyo, JAPAN, Presenter
Hisashi Kurosawa, Tokyo, JAPAN
Keishoku Sakuraba, Chibaken,
Hiroshi Ikeda, Tokyo, JAPAN
Shunji Takazawa, Tokyo, JAPAN
Hiroaki Seto, Tokyo, JAPAN
Muneaki Ishijima Tokyo, JAPAN
Juntendo University, Tokyo, JAPAN
In anterior cruciate ligament (ACL) injury,
especially subacute injury, the torn ACL often
remains on the tibial side. This study presents the
method and early results of ACL reconstruction
using a gracilis tendon alone. This method
indicated when the considerable volume of the
remnant of the injured ACL remains.
The gracilis tendon is folded 5 times, and is
connected with extension polyester tapes at the
distal and proximal ends of the tendon loop. The
graft is passed through the ACL remnant, and is
secured with a small metal button introduced
through a small incision on the lateral thigh at the
femur side. Thereafter the graft is pulled distally
through the tibial tunnel and is fixed with two
staples.
This method was performed in 18 cases, and we
studied seven cases who had been followed for 12
months or longer. The average diameter and
length of the graft were 7.6 mm and 43.4 mm,
respectively. The postoperative side-to-side
anterior laxity difference measured by KT2000
arthrometer at 30 lbs averaged 0.6 mm.
Good clinical results of the reconstruction with a
gracilis tendon were shown in this study, so the
donor site morbidity can be minimized if smaller
tendon is chosen as a graft.
E-poster #355
Dynamic Function After Anterior Cruciate
Ligament Reconstruction is Related to Graft
Type
Kate E Webster, Melbourne, VIC AUSTRALIA,
Julian A Feller, Melbourne, VIC AUSTRALIA
Presenter
La Trobe Univ. Musculoskeletal Research Centre,
Melbourne, Victoria, AUSTRALIA
Background: Anterior cruciate ligament (ACL)
reconstruction is a common procedure. However,
considerable debate continues as to whether the
patellar tendon (PT) or the hamstring tendon (HS)
graft is preferable. It is therefore important that
functional differences associated with these two
graft types are understood. The purpose of this
study was to examine lower limb biomechanics
after HS and PT ACL reconstruction.
Methods: Two experiments were conducted. In
experiment 1, the gait patterns of 18 PT ACL
reconstruction patients, 18 HS ACL reconstruction
patients and 18 matched controls were compared.
In experiment 2, single-limb landing patterns were
compared between 17 PT ACL reconstruction
patients, 17 HS ACL reconstruction patients, and
12 controls. For both experiments a 3-dimensional
motion analysis and force plate system was used
to determine sagittal plane kinematics and
kinetics of the lower limb.
Results: In experiment 1 there were significant
differences in the moments about the knee that
related to graft type. The PT patients had a
reduced external knee flexion moment at mid
stance whilst the HS patients had a reduced
external extension moment at terminal stance.
Experiment 2 results also showed a reduction in
the external flexion moment about the operated
knee for the PT group compared to both the HS
and control groups.
Conclusion: These combined results suggest that
there are graft specific differences in knee
biomechanics following ACL reconstruction that
appear to relate to the donor site.
E-poster #356
Relationship Between Eccentric Contraction
Strength of Knee Extensor and Joint Stability
Before and After Anterior Cruciate Ligament
Reconstruction
Hiroshi Ikeda, Tokyo, JAPAN, Presenter
Hisashi Kurosawa, Tokyo, JAPAN
Shunji Takazawa, Tokyo, JAPAN
Sung-Gon Kim, Tokyo, JAPAN
Yuuji Takazawa, Tokyo, JAPAN
Hiroaki Seto, Tokyo, JAPAN
Muneaki Ishijima Tokyo, JAPAN
Juntendo University, Tokyo, JAPAN
Twelve men and 18 women with mean age of 22 (
15-32 ) years who underwent anterior cruciate