From 17d6672e1c1583c724bd8a01de6120ebd8209938 Mon Sep 17 00:00:00 2001
From: FabianK3 <21039694+FabianK3@users.noreply.github.com>
Date: Mon, 24 Aug 2026 21:40:14 +0000
Subject: [PATCH] Fix buta tendon reaction (#23137)

# Summary

This PR fixes the Butazoline OD/cryo treatment reaction not properly
healing cut tendons.
---
 .../Chemistry-Reagents/Chemistry-Reagents-Medicine.dm       | 4 ++--
 html/changelogs/fabiank3-fix-buta-tendon-reaction.yml       | 6 ++++++
 2 files changed, 8 insertions(+), 2 deletions(-)
 create mode 100644 html/changelogs/fabiank3-fix-buta-tendon-reaction.yml

diff --git a/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Medicine.dm b/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Medicine.dm
index b1479bd74ac..17d77f0ee61 100644
--- a/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Medicine.dm
+++ b/code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Medicine.dm
@@ -74,8 +74,8 @@
 	if(((M.chem_doses[type] > 30) && prob(2)) || ((M.bodytemperature < 189) && prob(10))) //Butazoline treats torn tendons when dose is greater than 30u. Alternatively, if the drug is used in a cryotube.
 		var/mob/living/carbon/human/H = M
 		for(var/obj/item/organ/external/E in H.organs)
-			if(E.status & TENDON_CUT)
-				E.status &= ~TENDON_CUT
+			if(E.tendon && (E.tendon_status() & TENDON_CUT) && E.tendon.can_recover())
+				E.tendon.rejuvenate()
 				M.visible_message("<b>[M]</b> spasms!", SPAN_DANGER("You feel a stabbing pain in your [E.name]!"))
 
 /singleton/reagent/kelotane
diff --git a/html/changelogs/fabiank3-fix-buta-tendon-reaction.yml b/html/changelogs/fabiank3-fix-buta-tendon-reaction.yml
new file mode 100644
index 00000000000..57d0f4ce38c
--- /dev/null
+++ b/html/changelogs/fabiank3-fix-buta-tendon-reaction.yml
@@ -0,0 +1,6 @@
+author: FabianK3
+
+delete-after: True
+
+changes:
+  - bugfix: "Fixed butazoline OD and cryotreatment not repairing cut tendons."