Abstract
Introduction and Aims: The Ponseti technique of clubfoot treatment consists of serial manipulation and casting. Most cases require a percutaneous Achilles tenotomy. Very few cases, if any, require surgical correction. This paper reports the short- to medium-term results of the Ponseti technique at one centre.
Method: All idiopathic clubfeet presenting at the clinic over a two-year period from October 2001 to September 2003 were included in the study. The feet were graded weekly using the Pirani score. The first cast attempts to correct the cavus by lifting the first metatarsal. Subsequently, the foot is manipulated and caste weekly, to obtain maximum forefoot abduction, against a fulcrum at the lateral aspect of the talar head. The heel (calcaneum) is free to rotate under the talus at the subtalar joint. No attempt is made to correct the equinus till Achilles tenotomy.
Results: Fifty-four idiopathic clubfeet in 38 consecutive babies were treated using the Ponseti technique. All cases scored five or 6/6 on the Pirani score on presentation. Ten babies had been manipulated elsewhere and offered surgery due to ‘failure to respond’ to the manipulation. Four feet presented late at between six and 12 months of age. An average of six casts were applied prior to the Achilles tenotomy. Six feet (four babies) corrected without a tenotomy. Forty-eight feet required the tenotomy, with a score of 1.5/6 prior to the tenotomy. Four of these six feet required a delayed tenotomy. Correction without surgery was obtained in all cases. All feet were maintained in straight lace shoes with abduction bar, with the feet externally rotated to 45 degrees. Abduction bar compliance issues were seen in three babies. At walking age the babies wore straight last high-top lace-up shoes. Residual dynamic forefoot adductus was seen in 11 feet and may require a tibialis anterior tendon transfer at age three years. Inadequate heel descent was seen in four cases. Residual internal tibial torsion was seen in one case.
Conclusions: The Ponseti method offers a reliable alternative to ‘traditional’ casting and surgery. Babies presenting early had an excellent chance of achieving full correction without surgery. We included children older than six months in the Ponseti program; the treatment is considered to work best with children under three months at presentation.
These abstracts were prepared by Editorial Secretary, George Sikorski. Correspondence should be addressed to Australian Orthopaedic Association, Ground Floor, The William Bland Centre, 229 Macquarie Street, Sydney, NSW 2000, Australia.
None of the authors is receiving any financial benefit or support from any source.
