EE was descending fixed ladder on lube truck when he slipped & fell to ground injuring Lt knee. EE stated knee was sore but didn't think it'd require med. attn. In Nov '14 EE went to dr as knee was still bothering him. Dr found small tear in meniscus, suggested surgery, scheduled for X-mas brk. Dr originally thought no restrictions needed but now suggests restr. duty till 2/14/15.