[When the leg is the victim of the foot]

Man (homo-erectus, plantigrade) is in constant contact with the ground via his feet which are platforms on which the legs and, above all, the entire body rest. When the body moves, the only segment which remains stable and fixed is the foot, which forms the point of departure of all the muscular actions of this moving body. The slightest deformity of this platform, this foot, will lead to skeletal, musculotendinous and neurovascular problems in the legs, and to pain. Pain due to skeletal problems may be related to fatigue fractures (tibia, fibula) and to posterior tibial periostitis. Pain may also be due to musculotendinous problems which are characterised by a muscle bed syndrome (anterolateral, posterior) or tensosynovitis. Neurovascular problems are typified by a tarsal sinus syndrome, a musculocutaneous nerve syndrome and dysfunction of Lejears' sole during filling in flat feet and during emptying in hollow feet.