Intermediate bone callus (lat. Callus intermedius; synonym Hansen-Frommella orthcallus, intermedial stratum corneum of bone) - radiographically determined in the form of clearing of the average thickness of the membranous-cartilaginous or bone layer between the epiphyses and metaphyses, characterized by the proliferation of cartilaginous and bone tissue. A callus is formed due to excess pressure of soft tissues, when they are compressed or rubbed. Prolonged friction of one surface against another also leads to the formation of calluses. Calluses take the longest to form when moving on the extremities. There are soft calluses and ossified calluses.
Deposition of salts on the mucous membrane of the interphalangeal joints (the so-called “bone callus”) is usually a unilateral deposition of characteristic calcified masses on the surface of the articular areas of the bones (phalangeal fingers), in which the interphalangeal joints become completely or partially immobile. As a rule, men aged 45-60 years are affected. This condition may