All surgery requires the set of medical tools in the Operating Theatre, along with a table (a surgical table gives no negative results). For the most part, only medical doctors and the Chief Medical Officer can perform advanced surgery.
Surgical Tools
Information about every tool used in surgery can be found here.
For every tools there are ghetto analogues. Using them lowers chances of performing a surgical step correctly, wounding your patient. Hover your cursor over the item's picture to see its name. Next to the items are the success rates.
Beginning of any Operation
Step 1: 
Place the patient onto the operating table.
- If there is no table, you can use: any table (80%), any bed (70%), ask them to lie on the floor (50%). Chances of successfully completing every step will be reduced.
Step 1.5: 
(Optional) Use a tank of anesthetic and a breath mask to make your patient sleep. Use sterilizine if you want to improve your success chance.
Step 2: 
Place drapes or bedsheet over the part of body you are operating.
Step 3: 
Switch to help intent.
Step 4: 
Aim at the appropriate body part (important!).
Step 5: 
Do the surgery (see the steps below!). Afterwards congratulate the patient and kick them out.
To interrupt a surgery, hold a cautery in one hand and drapes in the other, and use the drapes on the patient.
Surgical Procedures
Organ Manipulation
This surgery covers operations to remove/insert organs(brain, heart, appendix), cyber implants and alien embryos. The body part target depends on which procedure you want to do. See below for details about each procedure.
| Procedure | Ghetto Analogues |
| Step 1: Scalpel: make an incision. |
 (65%)  (45%)  (75%)
|
Step 2:  Retractor: retract the skin. |
 (45%)  (35%)
|
Step 3(Head/Chest only):  Circular Saw: saw through bones. |
 (65%)  (50%) (50%)  (35%)  (25%)  (75%)
|
Step 4:  Hemostat: clamp the bleeders. |
(60%)  (35%)  (15%)
|
| Step 5: Scalpel: make an incision. |
(65%) (45%) (75%)
|
| Step 6 Remove: Hemostat: remove something. |
 (55%)
|
Step 6 Insert:  Hands: insert something.
| |
Step 7:  Cautery: seal the wound. |
 (90%)  (70%)  (45%)  (20%)
|
(Alien Organ Manipulation variant for xenos)
| Procedure | Ghetto Analogues |
| Step 1: Circular Saw: saw through the bone. |
(65%) (50%) (50%) (35%) (25%) (75%)
|
| Step 2: Scalpel: make an incision. |
(65%) (45%) (75%)
|
| Step 3: Retractor: retract the skin. |
(45%) (35%)
|
| Step 4: Circular Saw: saw through the bone. |
(65%) (50%) (50%) (35%) (25%) (75%)
|
| Step 5 Remove: Hemostat: remove something. |
(55%)
|
| Step 5 Insert: Hands: Insert something.
| |
| Step 6: Cautery: seal the wound. |
(90%) (70%) (45%) (20%)
|
Organs
- Brain
Target: Head
Note: Brains can also be removed by beheading the target and using a sharp object on the head to extract the brain.
Note: There's also a non-surgery method to put a brain back in:
Step 1: Place the patient onto the operating table.
Step 2: 
Cram their brain back into their skull.
Step 3: 
Usually, you take the body to be cloned.
- Appendix
Removing it cures appendicitis and prevents it in the future, too.
Target: Groin
- Heart
Target: Chest
- Lungs
Target: Chest
- Tongue
Target: Mouth
- Cybernetic Implant File:Chestimplant.pngFile:Brainimplant.pngFile:Eyeimplant.pngFile:Toolkitimplant.png
Target: Chest/Head/Eyes/Arms
- Xenomorph Embryo
Target: Chest
- Plasma Vessel
Implanting this allows for your plasma count to be raised. It allows you to plant alien weeds and heal from standing on them, and transfer plasma to others.
Target: Chest
- Neurotoxin Gland
Implanting this allows for you to spit neurotoxin.
Target: Mouth
- Acid Gland
Implanting this allows for you to spit corrossive acid at an object, which will remove it slowly over-time.
Target: Mouth
- Hive Node
Implanting this allows for you to speak with others who also have this (using .a). It will also stop NPC xenos from attacking you.
Target: Head
- Resin Spinner
Implanting this allows for you to secrete resin to create walls and nests.
Target: Mouth
- Egg Sac
Implanting this allows for you to lay xeno eggs.
Target: Groin
- Legion Soul
Implanting this allows for you to summon weak beings made of your blood which will attack anyone nearby you. It also heals you slowly over-time.
Target: Chest
Cavity Implant
Implant/Remove an object in the chest. Tiny and small items can be implanted. Implanting a flashlight allows the patient to toggle it on or off.
File:Hud target torso.gif Target: Chest
| Procedure | Ghetto Analogues |
| Step 1: Scalpel: make an incision. |
(65%) (45%) (75%)
|
| Step 2: Hemostat: clamp bleeders. |
(60%) (35%) (15%)
|
| Step 3: Retractor: retract the skin. |
(45%) (35%)
|
| Step 4: Scalpel: make an incision. |
(65%) (45%) (75%)
|
| Step 5: Place an item in the cavity / Use your hands to check for items in the cavity.
| |
| Step 6: Cautery: seal the wound. |
(90%) (70%) (45%) (20%)
|
Eye Surgery
This fixes all damage done to eyes (fixing blindness), except genetic. Failing the step 4 will cause 100 brain damage to the patient.
Target: Eyes
| Procedure | Ghetto Analogues |
| Step 1: Scalpel: make an incision. |
(65%) (45%) (75%)
|
| Step 2: Retractor: retract the skin. |
(45%) (35%)
|
| Step 3: Hemostat: clamp bleeders. |
(60%) (35%) (15%)
|
| Step 4: Hemostat: fix the patient's eyes. |
(45%)  (25%)
|
| Step 5: Cautery: mend the incision. |
(90%) (70%) (45%) (20%)
|
Dental Implant
This allows you to insert pills/patches into a tooth cavity, allowing you to pop it any time to ingest it.
Target: Mouth
| Procedure | Ghetto Analogues |
Step 1:  Surgical Drill: Drill a hole in a tooth. |
 (60%)  (60%) (20%)
|
Step 2:  Pill/Patch: Insert a pill/patch.
|
Removal of Embedded Objects
Extracts objects stuck in the body such as throwing stars or spears.
Target: Head, chest, legs, or arms
| Procedure | Ghetto Analogues |
| Step 1: Scalpel: make an incision. |
(65%) (45%) (75%)
|
| Step 2: Hemostat: clamp bleeders. |
(60%) (35%) (15%)
|
| Step 3: Retractor: retract the skin. |
(45%) (35%)
|
| Step 4: Remove: Hands: Remove object.
|
Implant Removal
Extracts loyalty, tracking, chemical, traitor, explosive implants and such. They won't be reusable.
File:Hud target torso.gif Target: Chest
| Procedure | Ghetto Analogues |
| Step 1: Scalpel: make an incision. |
(65%) (45%) (75%)
|
| Step 2: Hemostat: clamp bleeders. |
(60%) (35%) (15%)
|
| Step 3: Retractor: retract the skin. |
(45%) (35%)
|
| Step 4: Hemostat: extract the implant. |
(65%)
|
| Step 5: Cautery: seal the wound. |
(90%) (70%) (45%) (20%)
|
Limb Augmentation
Replace a limb with a robot part. The head, torso, arms, and legs can all be augmented. Augmenting torso makes you immune to appendicitis and xeno larva. Robot limbs are tougher. They need welding to "heal" brute damage and wires for burn damage, and cannot be otherwise healed. EMP pulses will hurt augmented humans.
We can rebuild him. We have the technology.
Target: Head, chest, legs or arms
| Procedure | Ghetto Analogues |
| Step 0: Create the cyborg limb(s) using an Exosuit Fabricator. | |
| Step 1: Scalpel: make an incision. |
(65%) (45%) (75%)
|
| Step 2: Hemostat: clamp bleeders. |
(60%) (35%) (15%)
|
| Step 3: Retractor: retract the skin. |
(45%) (35%)
|
| Step 4: Scalpel: sever the muscles. |
(55%)
|
| Step 5: Circular Saw: cut through the bone. |
(65%) (50%) (50%) (35%) (25%) (75%)
|
| Step 7: Cyborg limb: augment the limb. | |
Chainsaw Augmentation
Replaces an arm with a chainsaw.
Target: Arms
| Procedure | Ghetto Analogues |
| Step 1: Scalpel: make an incision. |
(65%) (45%) (75%)
|
| Step 2: Retractor: retract the skin. |
(45%) (35%)
|
| Step 3: Circular Saw: cut through the bone. |
(65%) (50%) (50%) (35%) (25%) (75%)
|
| Step 4: Hemostat: clamp bleeders. |
(60%) (35%) (15%)
|
| Step 5: Scalpel: make an incision. |
(65%) (45%) (75%)
|
| Step 6: Chainsaw: attach chainsaw.
|
Chainsaw Removal
Removes a chainsaw from the arm it is attached to.
Target: Arms
| Procedure | Ghetto Analogues |
| Step 1: Circular Saw: saw off chainsaw. |
(65%) (50%) (50%) (35%) (25%) (75%)
|
Amputation
Sever a limb from the torso.
Target: Head, legs, or arms
| Procedure | Ghetto Analogues |
| Step 1: Scalpel: make an incision. |
(65%) (45%) (75%)
|
| Step 2: Hemostat: clamp bleeders. |
(60%) (35%) (15%)
|
| Step 3: Retractor: retract the skin. |
(45%) (35%)
|
| Step 4: Circular Saw: cut through the bone. |
(65%) (50%) (50%) (35%) (25%) (75%)
|
| Step 5: Hemostat: clamp bleeders. |
(60%) (35%) (15%)
|
| Step 6: Scalpel or Circular Saw: sever the limb. |
(80%) (50%) (40%) (25%) (80%)
|
Prosthetic Replacement
Replace a severed limb with either a normal or a robotic limb.
Target: Head, legs or arms
| Procedure | Ghetto Analogues |
| Step 0: Acquire the required limb. | |
| Step 1: Scalpel: make an incision. |
(65%) (45%) (75%)
|
| Step 2: Hemostat: clamp bleeders. |
(60%) (35%) (15%)
|
| Step 3: Retractor: retract the skin. |
(45%) (35%)
|
| Step 4: Limb/Cyborg limb: replace the limb. | |
Lipoplasty
Target: Chest
| Procedure | Ghetto Analogues |
| Step 1: Scalpel: make an incision. |
(65%) (45%) (75%)
|
| Step 2: Hemostat: clamp bleeders. |
(60%) (35%) (15%)
|
| Step 3: Circular Saw: cut up the fat. |
(35%) (25%)
|
| Step 4: Retractor: remove the fat. |
(45%) (35%)
|
| Step 5: Cautery: seal the wound. |
(90%) (70%) (45%) (20%)
|
Plastic Surgery
If the patient's face is damaged and unrecognizable it restores it, otherwise it change the face and identity of the patient.
Target: Head
| Procedure | Ghetto Analogues |
| Step 1: Scalpel: make an incision. |
(65%) (45%) (75%)
|
| Step 2: Retractor: retract the skin. |
(45%) (35%)
|
| Step 3: Scalpel: alter the patient's appearance. |
(50%) (35%)
|
| Step 4: Cautery: seal the wound. |
(90%) (70%) (45%) (20%)
|
Slime Core Removal
Remove core from slime. Step 3 must be repeated for every core if slime has several. Mostly obsolete with existence of slime grinder, but still possible.
| Procedure | Ghetto Analogues |
| Step 1: Scalpel: make an incision. |
(65%) (45%) (75%)
|
| Step 2: Scalpel: make an incision again. |
(65%) (45%) (75%)
|
| Step 3: Circular Saw: extract the core. |
(100%)
|
Tail Removal
The lizard cannot wag if you disable its tail.
Target: Groin
| Procedure | Ghetto Analogues |
| Step 1: Scalpel or Circular Saw: sever the tail. |
(80%) (50%) (40%) (25%) (80%)
|
| Step 2: Cautery: seal the wound. |
(90%) (70%) (45%) (20%)
|
Tail Attachment
WHAT HAS SCIENCE DONE?
Target: Groin
| Procedure | Ghetto Analogues |
| Step 1: Scalpel: make an incision. |
(65%) (45%) (75%)
|
| Step 2: Hemostat: clamp bleeders. |
(60%) (35%) (15%)
|
| Step 3: Retractor: retract the skin. |
(45%) (35%)
|
| Step 4: Scalpel: sever the muscles. |
(55%)
|
| Step 5: Tail: Attach the tail. |
Patch Wounds
Target: Body part with damage
| Procedure | Ghetto Analogues |
| Step 1: Scalpel: make an incision. |
(65%) (45%) (75%)
|
| Step 2: Hemostat: clamp bleeders. |
(60%) (35%) (15%)
|
| Step 3: Scalpel: clean wound. |
(65%) (45%) (75%)
|
| Step 4: Standard NT-issue emergency bandage Standard NT-issue emergency bandage: apply bandage. |
Treat Burns
Target: Body part with damage
| Procedure | Ghetto Analogues |
| Step 1: Scalpel: make an incision. |
(65%) (45%) (75%)
|
| Step 2: Hemostat: clamp bleeders. |
(60%) (35%) (15%)
|
| Step 3: Scalpel: clean wound. |
(65%) (45%) (75%)
|
| Step 4: Standard NT-issue burn dressing Standard NT-issue burn dressing: apply bandage. | |
| Step 5: Cautery: seal the wound. |
(90%) (70%) (45%) (20%)
|