Fatigue fracture of a short hip replacement: a failure analysis with electron microscopy and review of the literature
Ishaque BA 1, Stürz H, Basad E.
J Arthroplasty. 2011 Jun;26(4):665.e17-20. doi: 10.1016/j.arth.2010.05.021 .
Epub 2011 Apr 16. Review. PMID: 21498037
- Clinic and Policlinic for Orthopaedic Surgery, University Hospital Giessen and Marburg GmbH, Giessen, Germany.
Four years after primary implantation of an ESKA Cut short-stemmed prosthesis, a 61-year-old patient suffered fracture of the implant. The combination of missing proximal support of the prosthesis as well as enormous strain on the distal third of the stem can be considered as main reason for the fatigue failure. The special design of the modular implant with a small diameter and a spongy metal surface can be regarded as a contributing factor. This unique case demonstrates a possible failure mechanism of short- and ultra short-stemmed prostheses.