Hard knots in the center of the foot after metatarsal fracture should be given physical therapy, medication surgery and so on. Hard knots in the center of the foot after metatarsal fracture may be due to the long-term cast immobilization after the fracture, resulting in local skin friction with the cast and thickening of the skin cuticle in the center of the foot, it is recommended to apply local hot compresses for softening, and slowly scrape off the thickened skin with a foot knife. It is also possible that the local blood seepage during the fracture, after the absorption of the bruise, the local parcel is mechanized to form a hard knot, you can take oral medication to reduce the swelling, if it is not effective, you may need to perform surgical treatment if necessary. It is also possible that the metatarsal fracture damages the local soft tissues, and the local contracture forms a hard knot after the repair of the fascia or muscle. Local massage, physical therapy (microwave), and anti-swelling medication can be given first, and if the effect is poor, surgery may be needed. If the effect is poor, surgery is needed. If there is a hard knot in the center of the foot after a metatarsal fracture, it is recommended to actively consult a physician for treatment under the guidance of a physician.