diff --git a/code/__DEFINES/dcs/signals/signals_mob/signals_mob_main.dm b/code/__DEFINES/dcs/signals/signals_mob/signals_mob_main.dm
index d8fd784b007..e21789fccbf 100644
--- a/code/__DEFINES/dcs/signals/signals_mob/signals_mob_main.dm
+++ b/code/__DEFINES/dcs/signals/signals_mob/signals_mob_main.dm
@@ -45,3 +45,6 @@
 
 /// From /obj/item/organ/external/take_damage. Updates the limb's colour matrix. Very laggy, so we do it on reaction to stuff.
 #define COMSIG_UPDATE_LIMB_IMAGE "update_limb_image"
+
+/// For when bone is fixed with surgery
+#define COMSIG_BEGIN_SURGERY "begin_surgery"
diff --git a/code/modules/customitems/item_defines.dm b/code/modules/customitems/item_defines.dm
index 61d487b0c13..90dea2dd4bd 100644
--- a/code/modules/customitems/item_defines.dm
+++ b/code/modules/customitems/item_defines.dm
@@ -2087,6 +2087,38 @@ All custom items with worn sprites must follow the contained sprite system: http
 		else
 			collapse()
 
+/obj/item/organ/internal/augment/fluff/kath_legbrace/Initialize()
+	. = ..()
+	if(!owner)
+		return
+	RegisterSignal(owner, COMSIG_BEGIN_SURGERY, PROC_REF(negate_healing), override = TRUE)
+	var/obj/item/organ/external/parent = owner.get_organ(parent_organ)
+	parent.fracture(TRUE)
+
+/obj/item/organ/internal/augment/fluff/kath_legbrace/replaced()
+	. = ..()
+	if(!owner)
+		return
+	RegisterSignal(owner, COMSIG_BEGIN_SURGERY, PROC_REF(negate_healing), override = TRUE)
+	var/obj/item/organ/external/parent = owner.get_organ(parent_organ)
+	parent.fracture(TRUE)
+
+/obj/item/organ/internal/augment/fluff/kath_legbrace/removed()
+	if(!owner)
+		return ..()
+	UnregisterSignal(owner, COMSIG_BEGIN_SURGERY)
+	return ..()
+
+/obj/item/organ/internal/augment/fluff/kath_legbrace/proc/negate_healing(var/owner, var/canceled, var/obj/item/organ/external/affected, var/mob/living/user, var/singleton/surgery_step/surgery)
+	SIGNAL_HANDLER
+	if(!istype(surgery, /singleton/surgery_step/glue_bone) && !istype(surgery, /singleton/surgery_step/set_bone))
+		return
+	if(affected.limb_name != parent_organ)
+		return
+	*canceled = TRUE
+	user.visible_message(SPAN_WARNING("[user] seems to be unable to set the bone in [owner]'s [affected.name]."), \
+		SPAN_WARNING("The bone in [owner]'s [affected.name] appears to be impossible to set correctly!"))
+
 /obj/item/organ/internal/augment/fluff/kath_legbrace/proc/collapse(var/prob_chance = 20, var/weaken_strength = 2, var/pain_strength = 40)
 	if(prob(prob_chance))
 		var/obj/item/organ/external/E = owner.organs_by_name[parent_organ]
diff --git a/code/modules/surgery/surgery.dm b/code/modules/surgery/surgery.dm
index 715e2196301..e485b741ab3 100644
--- a/code/modules/surgery/surgery.dm
+++ b/code/modules/surgery/surgery.dm
@@ -53,6 +53,13 @@
 /singleton/surgery_step/proc/can_use(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
 	if(!ishuman(target))
 		return FALSE
+
+	var/obj/item/organ/external/affected = target.get_organ(target_zone)
+	var/canceled = FALSE
+	SEND_SIGNAL(target, COMSIG_BEGIN_SURGERY, &canceled, affected, user, src)
+	if(canceled)
+		return FALSE
+
 	return TRUE
 
 /// Does stuff to begin the step, usually just printing messages. Moved germs transfering and bloodying here too
diff --git a/html/changelogs/LegBreaker.yml b/html/changelogs/LegBreaker.yml
new file mode 100644
index 00000000000..c6a668f005a
--- /dev/null
+++ b/html/changelogs/LegBreaker.yml
@@ -0,0 +1,6 @@
+author: TheGreyWolf
+
+delete-after: True
+
+changes:
+  - rscadd: "A signal was added to bone fixing surgery, for potential future uses where a bone repair surgery might not work."