Traction alone may convert simple MCP dislocation may convert it to a complex dislocation 
Dorsal dislocation
Flex the wrist to relax the flexor tendon
Hyperextend the joint
Apply pressure over dorsum of proximal phalanx in distal and volar direction
Volar dislocation
Rare, will likely need open reduction
If attempting closed reduction, push finger into the MCP joint and then hyperflex joint
After hyperflexing, pull traction and extend finger, using thumbs to guide proximal finger into place 
Flex the wrist to relax the flexor tendon
Hyperextend the joint
Apply pressure over dorsum of proximal phalanx in distal and volar direction
Rare, will likely need open reduction
If attempting closed reduction, push finger into the MCP joint and then hyperflex joint
After hyperflexing, pull traction and extend finger, using thumbs to guide proximal finger into place 
Splint with MCP joint in flexion
Refer to hand surgeon within 2 weeks
Metacarpophalangeal dislocation 
Finger dislocations
Carpometacarpal dislocation
Distal interphalangeal dislocation 
Interphalangeal dislocation 
Proximal interphalangeal dislocation 
Metatarsophalangeal joint sprain
Carpal dislocations