Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_

Poster
Topic: Navigation
Abstract number: 24944
HEALTH-RELATED QUALITY OF LIFE IN TOTAL KNEE ARTHROPLASTY.
SIMILAR RESULTS USING STANDARD, MIS AND NAVIGATION TECHNIQUE
Daniel HERNANDEZ-VAQUERO 1 , Alfonso NORIEGA-FERNANDEZ 2 , Manuel Angel
SANDOVAL-GARCIA 2 , Jose Manuel FERNANDEZ-CARREIRA 2
1 School of Medicine. University of Oviedo, Oviedo (SPAIN), 2 Hospital St Agustin,
Aviles (SPAIN)
Introduction: Despite substantial advances in primary Total Knee Arthroplasty (TKA)
patient selection, surgical technique, and implant design, numerous studies indicate
only 80% of patients were satisfied with their primary TKA. The patient evaluation of
health perception and functional results sometimes is not the same as the surgeon
appreciation after the surgery. Patient satisfaction is an important outcome measure
because there is a well documented discrepancy between clinician and patient
ratings of health status. Material and Methods: Prospective randomized study
comparing four groups of 25 patients with different surgical techniques (standard with
and without navigation, MIS with and without navigation), using the same prosthesis
model (Triathlon-Stryker). Mean age: 71.63 (SD 6.68), 81% are women. Visual
analog scale (VAS) for satisfaction, pain and improvement, Western-Ontario-
McMaster Osteoarthritis Index (WOMAC) and SF-12 questionnaires are used to
measure the quality of life six months after surgery. ANOVA is used to find significant
differences and Bonferroni test for multiple comparisons. Results: No differences are
found in the VAS test for pain (p=0.93), satisfaction (p=0.73) or improvement
(p=0.96). There are not differences neither in the WOMAC questionnaire pain
subscale (p= 0.75), stiffness (p= 0.61), function (p= 0.97) or for the total score (p=
0.87) nor in SF-12 physical subscale (p=0.85), mental subscale (p=0.51) or for total
score (p=0.87). Conclusions: Six months after TKA the patient’s health perception is
similar independently of the technique choose (conventional, MIS or navigation).
341