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97° CONGRESS OF THE PIEDMONTESE-LIGURIAN-LOMBARD SOCIETY OF ORTHOPEDICS AND TRAUMATOLOGY (SPLLOT) - I (Alba, September 22-23, 2000)
In the light of personal experience, this study refers to subtalar arthropathies subdivided into inflammatory, osteodystrophic, neoplastic and degenerative forms. The septic and those generally referred to as rheumatic (rheumatoid arthritis and psoriasis) are included in the inflammatory disease, Paget's disease is classified among the osteodystrophic forms, while villous-nodular pigmented synovitis and mucous cysts form part of the neoplastic forms. There is a higher incidence of degenerative arthrosic arthropathies. Primary forms are not easy to identify; secondary forms may be related to macrotraumatic (talus, heel, calcaneum, subtalar dislocation) or microtraumatic pathologies. The latter are important in chronic laxity of the talo-calcaneal interosseous ligament. Lesions caused by chondral and subchondral traumatic impact, now diagnosed using MNR, can be present with chondromalacic symptoms of the subastragalar joint, likewise a suprasegmentary axial pathology with a biomechanical pathogenesis. Lastly, arthropathies as a consequence of earlier surgery (arhroereisis, Grice, sequelae to synostosis resection, etc.) are discussed.