POSTER ABSTRACTS - ISAKOS

E-poster #531
Relationship Between Age and the IKDC Knee
Score
Andrea Nelson, Alexandria, MN, USA, Presenter
Mike Doyle, Alexandria, MN USA
Jeff Brand, Alexandria, MN USA
Alexandria Orthopaedic Associates, Alexandria,
MN, USA
INTRODUCTION: The International Knee
Documentation Committee (IKDC) devised a
subjective knee scoring sheet to evaluate patient
knee pain and function. Our purpose was to
evaluate the subjective knee score in individuals
without known knee pathology of varying ages. We
proposed that the knee function as measured by
the IKDC subjective knee scoring sheet declines
with advancing age.
MATERIAL: Individuals of varying ages were
assessed with the subjective IKDC knee scoring
sheet. The individuals have no known knee
pathology, injury or previous surgery.
METHODS: Seventy four individuals answered the
IKDC subjective knee questions. The data was
divided into age groups: 10-19 (N=11), 20-
29(N=4), 30-39 (N=18),40-49 (N=18), 50-59
(N=18), and 60 and over (N=5). The data was
collected on an Access data base (MicrosoftTM,
Redmond, WA), downloaded to Statview (SAS,
Cary, NC). ANOVA for each age group was
compared with Scheffe post hoc statistics.
RESULTS: The mean subjective total score for
each group in parenthesis: 10-19 (89.1), 20-29
(99.2), 30-39 (88.2),40-49 (87.2), 50-59 (83.6), and
60 and over (85.0). These differences were not
statistically significant despite the slight decline
in knee score with advancing age. None of the
subcategories were significantly different.
DISCUSSION: In this investigation the mean knee
score in each age group despite a slight decrease
with advancing age, were not significantly
different. Individual knee scores as assessed by
the IKDC subjective knee sheet reflects knee
pathology rather than advancing age. Of all
subjects surveyed only 25% scored at or above 99
of a possible 100.
E-poster #536
Development and Validation of a Novel Activity
Scale Appropriate for Total Knee Arthroplasty
Revision.
Khaled J. Saleh, Charlottesville, VA, USA,
Kevin James Mulhall, Charlottesville, VA USA
Presenter
Edward Ranier Santos, Minneapolis, Minnesota
USA
Boris Bershadsky, Minneapolis, MN USA
Hassan Ghomrawi, Minneapolis, MN USA
Kenneth A Krackow, Buffalo, New York USA
University of Minnesota, Minneapolis, MN &,
Buffalo, NY, USA
Introduction
Improved outcome measurement tools are
required in order to demonstrate the effectiveness
and clinical outcomes of total knee arthroplasty
revision (TKAR). We describe the development
and validation an Activity Scale (AS) as an
instrument for assessing the frequency and
intensity level of daily physical activity of patients
to allow more reliable, objective and accurate
analysis of clinical outcomes in TKAR.
Methods
The scale was developed using a consensus group
process, and initially validated using pedometry
and by comparing self-assessment by patients
with a relatives assessment. As part of a
prospective seventeen-center study, 297
consecutive patients undergoing TKAR had data
collected on demographics, co-morbidities,
Activity Scale (AS) scores and the Western Ontario
and McMaster Universities Osteoarthritis
(WOMAC) Index. Statistical models were
developed in order to validate the activity scale.
Univariate, bivariate and multivariate analytic
methods were used to validate AS in this
population both at baseline and 6-month followup.
The scale was further tested for reliability over
time as well as sensitivity to change.
Results
Once initial content and construct validity
(p=0.0001) and reliability (p