Lo-Fi Games

I apologize for this silly question but I haven´t found an answer in the forum, in the wikia or in the F1-help ingame:

My armorsmith Hobbs has lost his left arm and now I found a trader to buy an artificial arm for him. But I have no idea how to install the new limb? I have a doctor with medical-skill 55 but I don´t find an option to replace the missing limb? I exchanged the limb from medical to patient and back, put the patient into a bed, did rightklicks on any part but... nothing!

Please tell me how to replace the missing limb. Do I need a special technology in advance?

Thank you in advance for your help.

Its in your inventory screen. Just open and right click on artificial limb or drag and drop to right place.

Thanks a lot! I found it and replaced it. GREAT!