PURPOSE OF THE STUDY To present the results of a trial of the non-cemented Beznoska cup.

MATERIÁL

During the preriod from 1993 to 1997, a total of 43 Beznoska cups were implanted in 40 patients, 17 men and 23 women, with the average age of 61 and 65 years, respectively. Primary hip arthritis was the most frequent indication for arthro­plasty. Most cups were ušed in combination with a cemented stem.

METHODS

In 2002, 37 patients were examined. The follow-up period ranged from 5 to 10 years. Clinical evaluation was based on the Harris hip scores. X-ray films were examined for cup osteointegration and wear, and para-articular ossification.

RESULTS

During the follow-up period, two patients died and one underwent reimplantation.The remaining 37 patients were satis-fied with the surgical outcome. The Harris hip scores higher than 80 points were achieved in 80 % of the patients. No loos-ening or wear of the cup was found at the follow-up.

DISCUSSION

Good primary fixation in the acetabulum is the results of reliable anchorage by means of 16 spikes on the metal surface of the cup. Good secondary fixation is shown by the results of this study, aithough to confirm that the incorporation of a surface without a bioactive coat is long lasting will require at least 5 more years of follow-up.

CONCLUSIONS

Total hip arthroplasty with the Beznoska cup achieved good outcomes. It was ušed several times to manage situations in which a press-fit cup initially indicated lacked sufficient primary retention because of the bone being too soft or the ace­tabulum defective.

Key words: total hip replacement, non-cemented cup.

Celý článek ke stažení zde:

Necementovaná plášťová jamka Beznoska v aloplastice kyčelního kloubu 145.5 KB