POSTER ABSTRACTS - ISAKOS

However, there was no significant difference in
VAS at rest after 3 hours. On movement, VAS was
lower in the Preoperative group at 3 hours
(p=0.018) and 6 hours (p=0.047) compared to the
Post-operative group. Again, there was no
significant difference in pain scores at 12 and 24
hours on movement. The analgesia requirement in
the Post-operative group was much higher than
that seen in the Pre-operative group. There were
no adverse effects reported.
Conclusion: This study validates the efficacy of
preemptive Valdecoxib to reduce post-operative
pain and analgesia consumption after
arthroscopic anterior cruciate ligament
reconstruction.
E-poster w/ Standard #421
Revision Anterior Cruciate Ligament
Reconstruction: The US Military Academy
Experience
Darryl B. Thomas, Ft. Sam Houston, TX, USA,
Presenter
Dean C Taylor, West Point, NY USA
Keller Army Community Hospital, West Point, NY,
USA
OBJECTIVES
Failure of primary anterior cruciate ligament (ACL)
reconstruction, resulting in symptomatic recurrent
instability, occurs in 3-10% of patients. Results of
revision ACL reconstruction are generally inferior
to primary reconstruction. This study was
performed to determine the results of revision
ACL reconstruction at our institution, and to
better identify and address those factors that lead
to primary ACL failure.
METHODS
Thirty-four patients who underwent revision
arthroscopic ACL reconstruction were
retrospectively reviewed. Grafts used for ACL
revision included BTB autografts (76%), HS
autografts (19%), and Achilles allografts (5%). Pre
and post-operative exams included
comprehensive subjective evaluation using the
SANE, Tegner, Lysholm, KOOS, and IKDC scoring
systems. Objective evaluation included manual
laxity testing, instrumented laxity testing,
isokinetic muscle testing, and functional activity
testing. The average age at revision was 26 years
and the average time from primary to revision
surgery was 48 months. Average length of followup
was 60 months. The results of these 34
patients were then compared to a cohort of 42
patients who underwent primary ACL
reconstruction at the same institution.
RESULTS
Anterior laxity was improved in all patients.
Eighty-two percent of patients had less than 5-
mm side-to-side difference on arthrometric
testing, and 78% had either a Grade 0 or grade 1
pivot shift. The mean Tegner score following
revision ACL reconstruction was 5.4, which was
significantly lower than the mean score for those
following primary reconstruction, 8.5 (p