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Reply to Letter to the Editor: Use of Morphometry to Quantify Osteolysis after Total Hip Arthroplasty

Smith, L., K., MSc1, a

Clinical Orthopaedics and Related Research: February 2011 - Volume 469 - Issue 2 - p 618–618
doi: 10.1007/s11999-010-1724-7
Reply to Letter to the Editor
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1 Department of Trauma and Orthopaedic Surgery, Weston General Hospital, Grange Road, Uphill, BS23 4TQ, Weston-s-Mare, England, UK

a e-mail; smith@unforgettable.com

(Re: Smith LK, Cramp F, Palmer S, Coghill N, Spencer RF. Use of morphometry to quantify osteolysis after total hip arthroplasty. Clin Orthop Relat Res. 2010;468:3077-3083.)

I thank Dr. Mehin for his comments regarding our paper [2] describing the use of a morphometric grid to quantify osteolysis seen on radiographs.

I agree with him regarding the importance of the location and size of retroacetabular osteolytic lesions in the assessment of a THA. The availability of a simple and reliable tool to quantify these lesions is important for long-term THA surveillance and also can be useful to explain to asymptomatic patients the significance of radiographic changes.

Further research with the morphometric grid may help to describe the extent of osteolysis, which predicts instability of an acetabular component. This, along with other work including that of Dr. Mehin and his colleagues [1], will contribute to the decision-making process for revision hip surgery.

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References

1. Mehin, R., Yuan, X., Haydon, C., Rorabeck, CH., Bourne, RB., McCalden, RW. and MacDonald, SJ. Retroacetabular osteolysis: when to operate? Clin Orthop Relat Res. 2004; 428: 247-255. 10.1097/01.blo.0000137562.89722.64
2. Smith, LK., Cramp, F., Palmer, S., Coghill, N. and Spencer, RF. Use of morphometry to quantify osteolysis after total hip arthroplasty. Clin Orthop Relat Res. 2010; 468: 3077-3083. 10.1007/s11999-010-1377-6
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