title: A cementless elastic monoblock socket in young patients: a ten to 18-year clinical and radiological follow-up.
abstract: The survival of acetabular components depends on several factors: wear, osteolysis and septic or aseptic loosening. Osteolysis seems to be the main cause for concern in cementless arthroplasties. Acetabular osteolysis results from particle debris and segmental unloading of acetabular bone by rigid sockets. We investigated a cementless elastic monoblock socket with regard to acetabular osteolysis and aseptic loosening in a cohort of young patients. We evaluated 158 hip arthroplasties with a minimum follow-up of ten years (ten to 18) and a mean age of 42 years (18-50). The overall revision rate at 14 years was 80% with a 98% survival rate for aseptic loosening. The mean polyethylene wear rate was 0.11 mm/year. Progressive acetabular osteolysis was seen in 3% of patients evaluated. In conclusion, we found low pelvic osteolysis rates, acceptable overall wear rates, satisfactory overall survival and excellent survival rates for aseptic loosening of a cementless elastic monoblock socket in patients younger than 50 years. Ongoing tribology developments and knowledge about acetabular bone adaptations behind acetabular implants will further lower wear and osteolysis rates and optimise survival rates of cementless sockets.
authors.affiliation: Department of Orthopaedic Surgery, St. Maartenskliniek Hospital, P.O. Box 9011, 6500 GM, Nijmegen, The Netherlands. D.Pakvis@maartenskliniek.nl
authors.forename: Dean
authors.initials: D
authors.lastname: Pakvis
authors.forename: Liesbeth
authors.initials: L
authors.lastname: Biemond
authors.forename: Gijs
authors.initials: G
authors.lastname: van Hellemondt
authors.forename: Maarten
authors.initials: M
authors.lastname: Spruit
mesh_terms: D000293:Adolescent; D000328:Adult; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation / Q000379:methods*; D001843:Bone Cements; D002484:Cementation; D005260:Female; D005500:Follow-Up Studies; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D012189:Retrospective Studies; D055815:Young Adult
chemical_list: D001843:Bone Cements
references.citation: J Arthroplasty. 2006 Feb;21(2):185-90
references.pmid: 16520205
references.citation: Clin Orthop Relat Res. 2004 Feb;(419):98-106
references.pmid: 15021139
references.citation: J Bone Joint Surg Br. 2008 Oct;90(10):1284-90
references.pmid: 18827236
references.citation: J Am Acad Orthop Surg. 2009 Feb;17(2):63-8
references.pmid: 19202119
references.citation: J Bone Joint Surg Am. 1973 Dec;55(8):1629-32
references.pmid: 4217797
references.citation: J Bone Joint Surg Am. 2002 May;84(5):729-35
references.pmid: 12004013
references.citation: J Bone Joint Surg Br. 2008 Nov;90(11):1422-7
references.pmid: 18978259
references.citation: J Arthroplasty. 1989 Sep;4(3):245-51
references.pmid: 2795031
references.citation: Clin Orthop Relat Res. 2000 Dec;(381):120-8
references.pmid: 11127648
references.citation: Yonsei Med J. 2003 Jun 30;44(3):473-8
references.pmid: 12833585
references.citation: Clin Orthop Relat Res. 1976 Nov-Dec;(121):20-32
references.pmid: 991504
references.citation: Clin Orthop Relat Res. 2000 Apr;(373):153-63
references.pmid: 10810473
references.citation: Clin Orthop Relat Res. 2006 Dec;453:103-9
references.pmid: 17006361
references.citation: J Bone Joint Surg Br. 1990 Jan;72(1):53-9
references.pmid: 2298795
references.citation: J Bone Joint Surg Am. 2003 Jan;85(1):109-14
references.pmid: 12533580
references.citation: J Bone Joint Surg Am. 1994 Jul;76(7):959-64
references.pmid: 8027123
references.citation: Clin Orthop Relat Res. 2004 Oct;(427):157-61
references.pmid: 15552152
references.citation: Lancet. 2007 Oct 27;370(9597):1508-19
references.pmid: 17964352
references.citation: Clin Orthop Relat Res. 2007 Aug;461:114-21
references.pmid: 17415011
references.citation: J Bone Joint Surg Br. 2009 Apr;91(4):447-50
references.pmid: 19336802
references.citation: Z Orthop Ihre Grenzgeb. 2001 May-Jun;139(3):212-6
references.pmid: 11486623
references.citation: J Bone Joint Surg Am. 2009 May;91(5):1130-5
references.pmid: 19411461
references.citation: J Bone Joint Surg Am. 2008 Oct;90(10):2160-70
references.pmid: 18829914
references.citation: J Bone Joint Surg Am. 2002 Jan;84(1):58-63
references.pmid: 11792780
references.citation: Acta Orthop. 2005 Feb;76(1):28-41
references.pmid: 15788305
references.citation: J Arthroplasty. 2009 Aug;24(5):705-9
references.pmid: 18703310
references.citation: J Bone Joint Surg Br. 2009 Aug;91(8):1037-43
references.pmid: 19651830
references.citation: J Bone Joint Surg Br. 2001 May;83(4):579-86
references.pmid: 11380136
references.citation: Int Orthop. 2010 Dec;34(8):1123-7
references.pmid: 19784647