diff --git a/src/js/itemAvailability.js b/src/js/itemAvailability.js
index b70979fde292371e8f3421b07944bfc2a88b69c2..b2ced24f3d3cc17cb455a9a88cc17ad0a67d8f6c 100644
--- a/src/js/itemAvailability.js
+++ b/src/js/itemAvailability.js
@@ -189,6 +189,15 @@ window.addProsthetic = function(slave, prosthetic) {
 	}
 };
 
+/**
+ * @param {App.Entity.SlaveState} slave
+ * @param {string} prosthetic
+ * @returns {{}}
+ */
+window.findProsthetic = function(slave, prosthetic) {
+	return slave.readyProsthetics.find(p => p.id === prosthetic);
+};
+
 /**
  * @param {string} prosthetic
  * @returns {number}