DISCOVERY® ELBOW SYSTEM ARTHROPLASTY – RESULTS OF 10-YEAR FOLLOW-UP
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Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty.
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Verkkojulkaisu
DOI
Tiivistelmä
Background
The semi-constrained Discovery® Elbow System (LimaCorporate, San Daniele del Friuli, Italy) allows varus-valgus laxity of 7°[1]. The Discovery® Elbow System has been reported to provide good pain relief and increased range of motion[2, 3] on mid-term follow-up. The aim for the study was to evaluate long-term outcomes of total elbow arthroplasty using Discovery® Elbow System.
Materials and methods
The Mayo Elbow Performance Score (MEPS) and Elbow Range of motion (ROM) were assessed. Plain radiographs were obtained to assess radiolucency in humerus and ulna.
Results
During the follow-up of 105,4 (range 24.6 to 179,9) months, 132 patients (153 elbows) were operated. The cause of surgery was rheumatoid arthritis in 105 (71%) cases, post-traumatic or primary arthritis in 17 (13%) and fracture in 10 (6%) patients. The MEPS total score increased on average by 31.6 points. Respectively, elbow extension improved by 5.3°, flexion by 10.3° pronation by 5.3° and supination by 3.0°. Pain severity eased by 5.2 points in motion and by 2.8 points at rest. During the follow-up, 24 (16%) patients needed revision surgery. Most common cause for revision was periprosthetic fracture. Radiolucent lines were seen in all zones both in ulna and humerus. The Kaplan-Meier survival at five years was 88% and 79% at 10-14 years.
Conclusion
Discovery® Elbow System provides good results in range of motion of the elbow and in pain relief. The revision rate was relatively high (16% of patients).