Simple: subluxation
Joint appears hyperextended to 60-90 deg
Complex: dislocation
MCP joint is in moderate hyperextension with metacarpal head prominent in palm
Volar plate is interposed in MCP joint space
X-ray may show seasamoid within joint space (pathognomonic)
Closed reduction is not possible
Joint appears hyperextended to 60-90 deg
MCP joint is in moderate hyperextension with metacarpal head prominent in palm
Volar plate is interposed in MCP joint space
X-ray may show seasamoid within joint space (pathognomonic)
Closed reduction is not possible
Closed reduction is not possible
Metacarpophalangeal dislocation 
Finger dislocations
Carpometacarpal dislocation
Distal interphalangeal dislocation 
Interphalangeal dislocation 
Proximal interphalangeal dislocation 
Metatarsophalangeal joint sprain
Carpal dislocations