In a game where you can lose bits of yourself in combat, it's a good idea to have some way of fixing yourself up. If you don't go for regeneration or powerful healing magic, you can get replacement parts!
Made from wood, bone or metal, conventional prostheses often resemble the missing part or simpler shapes but have no ability to move on their own. Some more advanced pieces may be cleverly articulated, with joints and springs to aid movement.
Cheap, not subject to pain or energy loss, usually cannot restore full function.
A very recent development, a fabricant prosthesis is mechanically and mystically animated in a similar fashion to the fabricants themselves, and can be used by the wearer just like a real limb, albeit with some advantages and disadvantages due to being nonliving machinery.
Some fabricant parts may include intricate devices and tools, or even hidden weapons.
Expensive, not subject to pain or energy loss, cannot use talents that cost energy.
Getting a forgecursed prosthesis is easy. That is, if you can take the limb off a forgecursed. The tortured masses of metal and flesh are eager to reconnect with life and basically install themselves if surgically attached to the appropriate site. They function just like a normal limb. There is the downside of constant pain and a tendency toward gaining some of the negative forgecursed personality traits, making it the least popular option.
Rare, fully functional, constant pain and risk of madness.
Necromancers can animate dead parts and attach them to a living body. This may be nauseating to think about, but is perfectly safe and sanitary so long as the recipient does not let the part's reservoir of life force run empty. The limb may then attack the wearer and those around it in attempt to replenish itself. This can be particularly strange if the prosthesis is not a limb.
Creepy, fully functional, requires upkeep or risks becoming an uncontrolled undead.
A more exotic option, magewood replacements are not crafted, but planted in the wound and grow into the appropriate shape, albeit with a woody and sometimes leafy appearance. Magewood parts are tough and function well but require extra care, frequent sunlight and periodic watering.
Expensive, tough, fully functional, requires tending.