Migration of the humeral component of the Souter-Strathclyde elbow prosthesis: a long-term RSA study

The Journal of Bone and Joint Surgery. British Volume
Joris C T van der LugtRob G H H Nelissen

Abstract

Mechanical loosening which begins with early-onset migration of the prosthesis is the major reason for failure of the Souter-Strathclyde elbow replacement. In a prospective study of 18 Souter-Strathclyde replacements we evaluated the patterns of migration using roentgen stereophotogrammetric analysis. We had previously reported the short-term results after a follow-up of two years which we have now extended to a mean follow-up of 8.2 years (1 to 11.3). Migration was assessed along the co-ordinal axes and overall micromovement was expressed as the maximum total point movement. The alignment of the prosthesis and the presence of radiolucent lines were examined on conventional standardised radiographs. All the humeral components showed increased and variable patterns of migration at the extended follow-up and four humeral components were revised. The maximum total point movement at two years in the revised prostheses was 1.8 mm (sd 1.0) and in the non-revised 0.7 mm (sd 0.5, p = 0.01). Most humeral components migrated into external rotation resulting in an anterior and varus tilt. The ulnar components remained stable.

References

Mar 1, 1995·The Journal of Bone and Joint Surgery. American Volume·R G NelissenW E Mikhail
Jan 23, 1998·Journal of Shoulder and Elbow Surgery·M E TorchiaC R Settergren
Jan 5, 2000·Clinical Biomechanics·M StokdijkP M Rozing
Mar 5, 2004·The Journal of Bone and Joint Surgery. American Volume·J C T van der LugtP M Rozing
Jan 7, 2005·The Journal of Bone and Joint Surgery. American Volume·Mark I LoebenbergBernard F Morrey
Nov 1, 2006·The Journal of Bone and Joint Surgery. British Volume·I LandorA Sosna
Jul 7, 2007·The Journal of Bone and Joint Surgery. British Volume·B Derbyshire, M L Porter
Oct 2, 2007·The Journal of Bone and Joint Surgery. British Volume·R ItayemA Lundberg
May 3, 2008·The Journal of Bone and Joint Surgery. British Volume·S Glyn-JonesD W Murray

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Citations

Jul 16, 2014·Clinical Orthopaedics and Related Research·Mark P FiggieUNKNOWN Bioengineering Working Group
May 4, 2017·Acta Orthopaedica·Bart Ten BrinkeNina M C Mathijssen
Oct 5, 2010·The Journal of Bone and Joint Surgery. British Volume·F QureshiD Stanley
May 4, 2010·The Journal of Bone and Joint Surgery. British Volume·M IkävalkoE A Belt

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