Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_

Poster
Topic: Arthroplasty - Knee
Abstract number: 24176
THINNING PATELLOPLASTY IN TOTAL KNEE ARTHROPLASTY -
PRELIMINARY RESULTS
Vane ANTOLIC, Borut POMPE, Ziga SNOJ, Ladislav SIMNIC, Blaz MAVCIC
Dept. Orthopaedic Surgery, University Medical Centre Ljubljana, Ljubljana
(SLOVENIA)
Total knee arthroplasty is traditionally performed either with or without patellar
resurfacing. Some orthopaedic surgeons believe, however, patellar resurfacing can
be avoided even in painful patella if its articular surface is properly thinned and
reshaped to glide in the femoral trochlear groove. The aim of our work was to
evaluate the results of thinning patelloplasty and compare them with the control
group.60 total knee arthroplasties of the same type (Genesis II, Smith & Nephew)
were analyzed retrospectively. In the study group (n = 30) thinning patelloplasty was
performed by removing entire patellar cartilage through tangential sawing whereby
the concave shape of the original patellar facets remained unchanged. Control group
(n = 30) consisted of age- and gender matched individuals with the same implanted
type of knee endoprosthesis, but no patelloplasty was performed and only excessive
osteophytes were removed with a rongeur. In both the study group and the control
group the synovium surrounding patella was thoroughly removed and cauterized.
Other preoperative, perioperative and postoperative procedures were identical in
both groups. There was no significant difference between the study group and the
control group in terms of age, gender proportion, body mass index and radiographic
index of Insall-Salvati. Clinical status of patients evaluated with the Hospital for
Special Surgery Patellar Score showed the trend of less patellar pain in the group
with the thinning patelloplasty. In conclusion, preliminary results indicate thinning
patelloplasty may represent an alternative for painful patella management in total
knee arthroplasty.
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