The<unk>  joint is usually found at the base of the second and third metacarpal bones at the point where they meet the small bones of the wrist. Bosses are usually painless and will never cause more than a slight ache. They tend to be of manageable size, but on occasion the extensor tendons can slide over the bump, which can be annoying. Sometimes there is a ganglion cyst along with the boss. Often, this condition will be mistaken for a ganglion cyst because of its location and external appearance.<unk>  boss is uncommon and there is not much scientific data. Its etiology has yet to be fully defined, but can be congenital in the form of an accessory ossicle (os styloideum) or may be acquired from trauma, repetitive use, or degenerative osteophytosis. The condition usually begins to show in the 3rd or 4th decade.
Carpometacarpal bossing
Habit-tic deformity
Calcaneal pitch
Ulnar deviation
Planovalgus deformity
Sacral dimple
Swan neck deformity
Absence of gluteal muscle