NFL star Maxx Crosby's knee surgeon is reacting to the Baltimore Ravens abruptly reversing their trade for Crosby over concerns about his health. "Maxx Crosby is doing very well in the early part of his rehab and recovery from surgery to treat a significant meniscus tear and the related stress injury to the bone and cartilage in his knee," Dr. Neal ElAttrache told ESPN on Wednesday, March 11. "He is certainly on track in his planned program. ElAttrache continued, "He feels very well and is already much improved compared to before surgery.