From CM Wiki

Tools of the Trade

Tool Function
Used for cutting through flesh.
Improvised Equivalents: Kitchen KnifeKitchen Knife.png, or Glass ShardShard.png.
1Incision manager.png
Incision Management System (IMS)
Used for cutting through flesh, skips bleeder clamping and organ rearranging. Basically acts as a scalpel, hemostat, and retractor in one step during the initial incision. Only functions as a scalpel in steps after the first.
Used to stop bleeding during an operation, or to remove foreign and undesirable objects from a patient's body.
Improvised Equivalents: WirecuttersWirecutters.png if you are going to use it to extract items from the patient or Cable Coil CableCoils.png if you are going to use it to stop the bleeding of a patient.
Bone Setter.png
Bone Setter
Used for setting bones back into place. If used on a bone that is not broken then you will break it.
Improvised Equivalents: Wrench Wrench.png
Bone Gel
Used for repairing broken/shattered bones.
Improvised Equivalents: ScrewdriverScrewdriver.png
Used for re-arranging organs, and moving cut ribcages & skulls.
Improvised Equivalents: CrowbarCrowbar.png
Used for sealing incisions in a patients skin. Burns skin together.
Improvised Equivalents: CigaretteCig.png, LighterLighter.png, or BlowtorchWelder.gif
Used for repairing veins and arteries.
Improvised Equivalents: Cable CoilCableCoils.png
Circular Saw
Used for cutting through bones.
Improvised Equivalents: HatchetHatchet.png or MacheteMachete.png
Advanced Trauma Kit
Used to patch all organs except for the brain and eyes.
  • Improvised tools generally have a fairly high failure chance starting at about 25%.


Surgery is a simple process with a series of steps. Once these steps are memorized it should become effortless and routine to perform. Keep in mind that once you have mastery over the basics, it's a good idea to aim to be as fast and efficient as possible due to the importance of recycling casualties back into the fight, or even preventing them from dying in the case of Foreign Object/Alien Embryo Removal.


There are two ways of doing this, anesthetic (with mask or using the surgery table) and powerful painkillers.

Note: if the patient's lungs are ruptured, they will occasionally not breath in the anesthetic. Depending on the damage to the lungs, they will either occasionally breath in the anesthetic or it won't work at all. Therefore, you will have to give the patient the anesthetic via Injection, until his lungs are not ruptured anymore.

Inserting an Anaesthetic Tank into the Surgery Table

Firstly click on the surgery table with an anaesthetic tank in hand. You must make sure your operating table has an anaesthetic to be able to put your patient to sleep. If the tank runs out, simply click on the table with no patient on it, with an empty hand and pop in a new one.

Anesthetic tank and medical mask

If there is no available operating table then, the first step is applying anesthetic to the patient via the anesthetic tank and medical mask and turning on its internals (encourage your patient to put on the tank and mask, and turn the internals on as this is fastest and allows you to proceed with step two immediately). It is advisable to remove the anesthetic tank and medical mask during the cauterizing step for maximum efficiency.


If in a rush, or you just want to do things quickly, you can give your patients Oxycodone for quick surgeries without anesthetic (15-20U recommended). You need to work quick though. Note that every form of anesthetic other than the anesthetic tank has a chance of causing your patient to flinch during the surgery, you can supplement the oxycodone with Tramadol, Inaprovaline or Paracetamol to eliminate any flinch chance. Use your medical scanner to monitor your patient's painkiller levels and re-dose as necessary. Using painkillers can cause distress in the patient (screaming over the radio about getting operated on without anesthetics, standing up and trying to leave or fight back).

Surgical table

The third step is to place your patient on the surgical table (grab your patient, then click the table with your grabbing hand selected). After words you must hook up the anaesthetic to the patient (click hold and drag the surgery table to the patient). After a short delay, your patient will be under general anaesthetic which will allow you to operate safely.

If you must do to circumstances, you can improvise with a roller bed or even a table, but these improvised surfaces add a failure chance to each surgical step (a table's failure chance is higher). This will also require your patient to wear the anaesthetic tank and medical mask. Now that the preparations are done, you can begin with the actual surgery.

Different surgeries

Surgery: Description:
Foreign Object/Alien Embryo Removal (Everywhere except mouth/eyes.) Removal of unknown objects, such as shrapnel, implants, or alien embryos from the body.
  • Alien embryos will always be in the chest behind the ribcage. Time is of the essence when removing them, and you must complete this surgery as quickly as possible; your patient will die instantly when it finishes gestating, resulting in the birth of an alien larva. Make haste in removing any embryos.
  • Incision Management System. Incision Management System OR Open the incision. (Scalpel->Hemostat->Retractor)
  • Open the skull or ribcage if necessary. (Bone Saw->Retractor)
  • Fish out the foreign objects until they are all removed.. (Hemostat)
  • Close the skull or ribcage if necessary.(Retractor->Bone Gel).
  • Close the incision (Cautery)
Bone Repair Surgery (Everywhere except mouth/eyes.) This surgery is used for mending broken bones and fractures.
  • Note that a repaired bone will rebreak if your patient has more than 50 brute damage.
  • Incision Management System. Incision Management System OR Open the incision. (Scalpel->Hemostat->Retractor)
  • Repair the bone. (Bone Gel->Bone Setter) (Use the Health Analyzer to double check)
  • Close the incision. (Cautery)
Internal Organs Surgery (Groin, Chest.) Mending broken internal organs such as the heart or appendix. Note that this surgery excludes the eyes and brain as they have their own surgeries respectively.
  • Peridaxon does not heal organ damage. This is the only way to heal organs in the chest and groin.
  • Incision Management System. Incision Management System OR Open the incision. (Scalpel->Hemostat->Retractor)
  • Open the ribcage if necessary. (Bone Saw->Retractor)
  • Repair the biological organ with a Trauma Kit, or the robotic organ with Nanopaste.(Advanced Trauma Kit/Nanopaste)
  • Close the ribcage if necessary. (Retractor->Bone Gel)
  • Close the incision. (Cautery)
Limb Replacement Surgery (Limbs: Legs, Arms, Hands, Feet.) The replacement of missing limbs with robotic ones. Robot arms and legs are used to replace hands and feet; there is no need to further amputate if that's all the patient has lost.
  • Seal the stump. (Scalpel->Retractor->Cautery)
  • Attach the robotic limb. (Robotic Limb)
  • Inform the patient that the robotic limb can be repaired with Blowtorch Welder.gif(brute) and Cable coilsCableCoils.png(burn).
Eye Surgery (Eyes.) Mending the eyes to cure blindness and eye damage.
  • Using imidazoline is usually faster than this surgery.
  • Mend the eyes. (Scalpel->Retractor->Hemostat->Cautery).
Brain Damage Surgery (Head.) Fixing up the brain.
  • Using alkysine is usually faster than this surgery.
  • Incision Management System. Incision Management System OR Open the incision. (Scalpel->Hemostat->Retractor)
  • Open the skull.(Bone Saw->Retractor)
  • Repair severe brain damage, if any. (Fix-O-Vein)
  • Extract embedded bone chips until they are all removed. (Hemostat) (Use Health Analyzer to double check)
  • Close the skull. (Retractor->Bone Gel)
  • Close the incision. (Cautery)
Internal Bleeding Surgery (Everywhere except mouth/eyes.) This surgery mends the torn/ripped arteries and veins within the body to stop internal bleeding.
  • Incision Management System. Incision Management System OR Open the incision. (Scalpel->Hemostat->Retractor)
  • Mend the artery. (Fix-o-Vein)
  • Close the incision. (Cautery)
Facial Reconstruction Surgery (Mouth.) This surgery fixes facial deformities caused by severe damage to the head. I.E. "Unknown as (name)" when speaking.
  • This surgery is of minimal priority and should only be done if you have literally nothing better to do. This is a combat operation, cosmetic surgery can wait.
  • Fix the facial deformities. (Scalpel->Hemostat->Retractor)
  • Close the incision. (Cautery)
Amputation (Limbs: Legs, Arms, Hands, Feet.) Removal of a limb.
  • Saw through the limb. (Bone Saw)
Synthetic Head Re-Attachment Surgery (Head.) Re-attaching a decapitated synthetic head.
  • Mend the torn silicone tissue. (Retractor->Fix-O-Vein->Hemostat->Cautery).
  • Attach the synthetic head.
  • Use a Defibrillator Defibrillator on the synthetic.

Note: There isn't a timer on defibbing a synthetic.

Necrosis Treatment Surgery (Limbs: Legs, Arms, Hands, Feet.)

Necrosis is currently disabled.

Treating necrosis by cutting away the necrotic tissues and treating the affected area.
  • Incision Management System. Incision Management System OR Open the incision. (Scalpel->Hemostat->Retractor)
  • Excise necrotic tissue as many times as needed and heal the area.(Scalpel->Advanced Trauma Kit)
  • Close the incision. (Cautery)
Organ Removal/Transplantation Surgery (Groin, Chest, Head.)

Currently disabled and not performable.

Removing an organ from the body and transplanting a new organ.
  • Incision Management System. Incision Management System OR Open the incision. (Scalpel->Hemostat->Retractor)
  • Open the skull or ribcage if necessary. (Bone Saw->Retractor).
  • Remove the old organ (Scalpel->Hemostat)
  • Attach the new organ. Use Trauma kit (biological) or Nanopaste (robotic). (New Organ ->Fix-O-Vein->Advanced Trauma Kit/Nanopaste)
  • Close the skull or ribcage if necessary. (Retractor->Bone Gel)
  • Close the incision. (Cautery)

The Autodoc System

The Autodoc system is located in the middle of the treatment center and is only usable by the medical staff (and Squad Medics during WO). Note that while the autodoc is an extremely useful machine in medical, it cannot conduct larva removal surgery.

AutoDoc.png Operating Mode:
Manual: Manual mode will fix everything of the selected surgery type, for example selecting broken bone surgery will fix all broken bones one by one. Note that the autodoc cannot remove larva as, narratively, a removal procedure for this has not yet been programmed.
Manual Surgery List:
Autodoc manual list.png

Trauma Surgeries

  • Brute Damage Treatment: Treats and removes brute damage from the patient.
  • Burn Damage Treatment: Treats and removes burn damage from the patient.

Orthopedic Surgeries

  • Broken Bone Surgery: Repairs any broken bones the patient has.
  • Internal Bleeding Surgery: Repairs any internal bleeding the patient has.
  • Shrapnel Removal Surgery: Removes all instances of shrapnel from the patient.

Organ Surgeries

  • Eye Surgery: Treats and repairs eye damage and vision problems.
  • Surgical Organ Treatment: Repairs any damage to organs the patient has other than the eyes.

Hematology Treatments

  • Blood Transfer: Transfers blood into the patient. The autodoc has an internal reservoir of O- blood that it refills as needed.
  • Dialysis: Purges chemicals from the patient's blood stream; use with toxin damage chelation to treat poisoning and overdoses.
  • Toxin Damage Chelation (Kelation): Removes toxin damage.

Special Surgeries

  • Close Open Incision: Closes all open surgical incisions on the patient.
  • Facial Surgery: Treats and repairs facial deformities (typically from physical damage) so the patient can be clearly identified and doesn't look like an unga.
  • Limb Replacement Surgery: Replaces any missing limbs the patient has with robotic prosthetics.

Combining Surgeries

Very often people will come in with multiple problems at once. For instance, you might have a patient who has a fractured skull, brain damage, and shrapnel in their head. Performing three separate surgeries is very time consuming when other marines may be waiting. It is possible to condense the surgery down to one in such a manner:

  • Broken skull, brain damage, and head shrapnel removal surgery
  1. Use the Incision Management System. Incision Management System OR (Scalpel->Hemostat->Retractor) to make an incision.
  2. Bone Saw Cut through the skull
  3. Retractor Open up the skull
  4. Hemostat Here it gets a bit tricky, use a hemostat repeatedly to pull out bone chips and shrapnel until you get a message that nothing more can be found in the brain. Both types of removal can take several rounds or attempts.
  5. Fix-O-Vein Advanced Trauma Kit Use the FixOVein and Trauma Kit to repair hematomas and damage to the brain and eyes if necessary
  6. Use the Health Analyzer to check that the patient does not have brain damage! If the patient still has brain damage go back and use the hemostat and FixOVein more until the Analyzer shows no brain damage.
  7. Retractor Close the skull back up
  8. Bone Gel Use bone gel on the damaged bones in the skull
  9. Bone Setter Piece together the broken or fractured skull
  10. Bone Gel Add bone gel once more
  11. Cautery Seal up the incision
  12. Use the Health Analyzer again to see if the patient needs antibiotics or anti-toxins and administer them as needed

What about an infected marine with a broken chest, internal bleeding, and a ruptured lung? Here you'll want to use medication from the vendors in medbay in order to tackle the problems at hand.

  • Alien embryo removal, ruptured lung, and broken chest surgery (with a side of internal bleeding)
  1. First use one Quick-clot and one Dexalin Plus injectors to stop internal bleeding and to halt suffocation damage from the ruptured lung. While you can stop internal bleeding surgically, in the vast majority of cases a quick jab with Quick-clot is preferable. Keep a couple of Dex+ injector on hand to keep the patient from dying from the ruptured lung.
  2. Scalpel Make an incision quickly
  3. Retractor Ignore bleeders and rearrange organs. Removing the larva ASAP is the top priority right now
  4. Bone Saw Cut open the rib cage
  5. Retractor Separate the rib cage
  6. Hemostat Begin pulling out the alien embryo
  7. Advanced Trauma Kit Repair the ruptured lungs and any other damaged organs, note that a mechanical heart requires Nanopaste to fix
  8. Hemostat Now stem the bleeders with the hemostat
  9. Retractor Close up the rib cage
  10. Bone Gel One application of bone gel for the cut rib cage. Cut rib cages and skulls require one application of bone gel after they've been pushed back together.
  11. Bone Setter Set the broken bones in the chest
  12. Bone Gel An application for the set bones. In general remember that fixing a broken bone requires two application of bone gel before the setting it.
  13. Cautery Cauterize the incision, your patient should be recovering nicely now
  14. Again, use the Health Analyzer to double-check your work and to dispense spaceacillin or dylovene as needed


  • Patients can often tell you where they need surgery if an advance scanner is not available.
  • The hemostat step can be saved for later in the surgery or skipped entirely at the cost of damaging your patient over time.