Nuclear magnetic resonance as a contribution to the choice of technique in lengthening of the Achilles tendon in a spastic equinus foot.

In the search for a more accurate surgical programme for the correction of spastic equinus foot, the authors have studied the Achilles tendon with NMR before and after surgery. The results were quite interesting. Before operation, NMR provides indications as to the best technique to be adopted based on the finding of fibrotic processes involving the peritendinous tissue, in particular the Kager triangle, while, postoperatively, it allows us to evaluate the development of adherent fibrosis in relation to the different surgical techniques of lengthening adopted.