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Comparative Analysis of Long-Term Outcomes of Highly Porous Titanium Acetabular Cups in Primary Total Hip
R Fernández-Fernández1, L-R Merino-Rueda1, P Diaz-Freire1
1Unidad de Cadera, Servicio de Cirugía Ortopédica y Traumatología, Hospital La Paz, Madrid, España.
Objective:
An observational, ambispective study comparing the long-term clinical and radiological outcomes of two surface coatings (Porocoat® and Gription®) in Pinnacle® acetabular cups used for primary total hip arthroplasty.
Materials And Methods:
A total of 50 consecutively implanted cups between January 2012 and July 2013 were analyzed, categorized into Group A (n=25 Pinnacle®-Porocoat® cups) and Group B (n=25 Pinnacle®-Gription® cups). Clinical and radiological outcomes of both groups, including the need for surgical revision and time to revision, were compared over long-term follow-up, during the decade following the index procedure.
Results:
The study population had a median age of 70 [61-73] years and was predominantly male (64%, n=32). Preoperative BMI and functional evaluation were similar for both coating types. Revision-free survival was 96% in Group A and 92% in Group B (P=.591). Both groups showed significant and comparable clinical improvement, with no cases of aseptic loosening. Only two Pinnacle®-Gription® cups presented with non-progressive radiolucent lines.
Conclusions:
Both Porocoat® and Gription® demonstrated stable fixation and favorable long-term clinical and radiological outcomes, with no significant differences observed during follow-up after primary total hip arthroplasty.
