metatarsalgia refers to pain in the metatarsal shafts and metatarsal heads of the forefoot, or the plantar surface (i.e., the bottom of the forefoot) due to overuse of the transverse arch of the forefoot or compression or stimulation of the metatarsal nerve. Clinically, it is divided into relaxed and compressive types. The relaxed metatarsalgia is mainly due to the congenital maldevelopment of the first cuneiform bone, leading to chronic injury of the transverse arch, and is the primary metatarsal varus deformity and metatarsal hyperactivity.
plantar metatarsalgia refers to pain in the metatarsal heads or metatarsal shafts of the forefoot sole, mostly congenital1metatarsal deformity, such as the1metatarsals are too short, inverted, or abnormally active, due to the1metatarsals cannot bear weight effectively and need the2Or the3The metatarsal substitution. Normally, the interosseous muscles contract to bring the metatarsal heads together. If, due to factors such as weight gain, long-distance walking, intense exercise, weak feet after illness, and other reasons, the interosseous muscles atrophy and weaken, the stability between the metatarsal heads decreases, leading to the collapse of the transverse arch of the foot, relaxation of the transverse ligament between the metatarsal heads, and pain occurs.