Also known as "turf toe"
Acute or chronic hyperdorsiflexion of 1st MTP joint while foot remains in plantarflexion
Metatarsophalangeal joint sprain
Foot and toe fractures
Carpometacarpal dislocation
Subtalar dislocation
Humerus fracture
Metatarsophalangeal joint sprain 
Degloving injury
Acute arterial ischemia