The surgical anatomy of the interosseous ligament of the subtalar joint as it relates to clubfoot surgery.

Confusion exists as to the exact anatomical description of the interosseous ligament of the subtalar joint. An effort was made through anatomical dissections to elucidate the exact boundaries of this tiny ligament. It is the authors' belief that in some resistant clubfeet, unless this ligament is transected completely, a full correction of the clubfoot deformity will not be obtained and a less than satisfying result, or a recurrent clubfoot deformity, may be the sequela.