Acquired flexural deformity of the metacarpophalangeal joint in five horses associated with tendonous damage in the palmar metacarpus

caballos cheval diagnosis diagnostic echographie echography ecografia enfermedades de las articulaciones horses huesos de los miembros joint diseases lesiones lesions ligament ligamentos ligaments limb bones limbs maladie des articulations membre metacarpus miembros os des membres pathogenese pathogenesis phalanges tendon tendones tendonitis tendons trauma ultrason ultrasonics ultrasonido ultrasonography