Of the many different surgical techniques to treat peroneal tendon dislocations, transposition of the peroneal tendons under the calcaneofibular ligament has been used at the Orthopadisches Spital of ViennaIAustria since 1975. The method was first described by Platzgummer in 1967. After dividing the calcaneofibular ligament and removing the fatty tissue in the space between this ligament, the posterior talofibular ligament, and the lateral capsule of the subtalar joint, the peroneal tendons are placed behind the lateral rnalleolus and under the calcaneofibular ligament, which is reconstructed by suture to create an efficient retainment.Of 17 feet operated on, 13 were available for follow-up in 12 patients. Dislocation was idiopathic in three and traumatic in 10 feet. Criteria for evaluation were patient's satisfaction, absence of pain and swelling, and stability of tendon retention and of ankle and subtalar joints. Of the 13 operated feet, 11 showed an excellent result and two showed a good result.In the results graded as "good," occasional pain and swelling occurred in both feet of a patient belonging to the idiopathic group.

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Hallux valgus represents a combined deformity with malpositioning of the big toe in the metatarsophalangeal joint and metatarsal splaying due to metatarsus primus varus formation. It is defined on the basis of joint condition of the metatarsophalangeal and tarsometatarsal (TMT) joints, the extent and congruence or incongruence of malposition, mobility of the metatarsophalangeal joint and TMT stability. Basic resection appears to be indicated only in exceptional cases. Depending on the degree of severity, deformities can be corrected by means of distal, diaphyseal or proximal osteotomies and TMT arthrodeses. Any correction requires the use of subtle soft tissue surgery with recentering of the tendon, tightening of the medial capsule and abductor hallucis and releasing the lateral capsule. A check-list-like analysis of hallux valgus deformity helps determine the ideal procedure and avoid over- or under-treatment.