Effect of surface replacement arthroplasty on stability of the ankle

Foot & Ankle
P Burge, M Evans

Abstract

Loosening after total ankle arthroplasty may result from absorption of tensile and shear forces by relatively small bone-cement interfaces. A surface replacement arthroplasty similar in principle to the Oxford knee arthroplasty offers theoretical advantages over other designs. The ability of such a prosthesis to provide a stable articulation was tested by examination of ankle laxity before and after replacement of the tibiotalar articular surfaces. The motion response characteristics of four specimens were measured for internal-external rotation moment (+/- 3 nm), inversion-eversion moment (+/- 3 nm), and anteroposterior displacement (+/- 50 N). The prosthesis restored normal internal-external and inversion-eversion rotatory stability, but the mean anteroposterior laxity was increased from 5.5 to 9.7 mm (P less than 0.05). Anteroposterior stability could not be restored by increasing the thickness of the bearing interposed between the prosthetic surfaces. The findings can be explained by consideration of the anatomy of the ligaments in relation to the contour of the normal and prosthetic articular surfaces. The normal tibial articular surface, which is concave in the sagittal plane, provides restraint against anteroposterior mo...Continue Reading

References

Aug 1, 1978·The Journal of Bone and Joint Surgery. British Volume·J Goodfellow, J O'Connor
Nov 1, 1985·The Journal of Bone and Joint Surgery. British Volume·B G Bolton-MaggsM A Freeman
Nov 1, 1980·The Journal of Bone and Joint Surgery. British Volume·C J McCullough, P D Burge

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Citations

May 10, 2011·Foot and Ankle Surgery : Official Journal of the European Society of Foot and Ankle Surgeons·Ajai Seth
Jul 25, 2009·Journal of the Mechanical Behavior of Biomedical Materials·Junitha M MichaelTarun Goswami
Jan 9, 2003·Foot and Ankle Clinics·Timothy D Henne, John G Anderson
May 15, 2013·Foot & Ankle International·Robert FlavinJames W Brodsky
Nov 26, 2008·Foot & Ankle International·Filip LeszkoSheldon S Lin
May 16, 2000·Foot & Ankle International·R D KomistekM E Hajner
Jul 9, 2004·Clinical Orthopaedics and Related Research·Hakon Kofoed
May 11, 2004·Foot & Ankle International·Lowell H Gill

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Methods Mentioned

BETA
total ankle arthroplasty

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