Preventing ceramic liner fracture after Delta ceramic-on-ceramic total hip arthroplasty.
Arch Orthop Trauma Surg
; 141(7): 1155-1162, 2021 Jul.
Article
en En
| MEDLINE
| ID: mdl-32529389
BACKGROUND: The results of total hip arthroplasty (THA) with use of Delta ceramic articulation were successful at medium term follow-up. The use of this newest ceramic has markedly reduced the incidence of ceramic head fractures, but not the incidence of ceramic liner fractures. We tested a hypothesis that the ceramic fractures are prevented by use of a metal shell with 18° inner taper angle and a stem design with a reduced neck geometry. METHODS: We conducted a prospective multicenter study of cementless THA with use of 32/36-mm Delta ceramic bearing, Exceed ABT metal shell and Taperloc stem. We evaluated ceramic fracture, noise, clinical results, radiological changes and survival rate at a minimum of 5-year follow-up. RESULTS: From April 2010 to February 2012, 246 patients (274 THAs) were enrolled. Among them, 224 patients (130 men and 94 women, 250 hips) were followed-up for 5-8 years (mean 6.0 years). Ceramic malseating or fracture did not occur in any patient. Eight patients (8 hips, 3.2%) reported noise. Mean Harris hip score was 84 points at the latest follow-up. All acetabular and femoral components had bone-ingrown stability. Two hips were revised due to recurrent dislocation and periprosthetic fracture. The survival rate was 99.6% at 8 years postoperatively. CONCLUSION: Ceramic fractures can be prevented by a use of (1) 32/36-mm Delta ceramic bearing, (2) metal shell with 18° taper angle, and (2) stem with a reduced neck geometry. However, noise remains a concern of the Delta ceramic bearing. LEVEL OF EVIDENCE: Therapeutic level II.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Complicaciones Posoperatorias
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Falla de Prótesis
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Cerámica
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Artroplastia de Reemplazo de Cadera
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Prótesis de Cadera
Tipo de estudio:
Clinical_trials
/
Observational_studies
Límite:
Humans
Idioma:
En
Revista:
Arch Orthop Trauma Surg
Año:
2021
Tipo del documento:
Article
País de afiliación:
Corea del Sur