The severity of your injury can vary from a simple sprain to a posh tear. ACL tear symptoms include swelling from the affected knee along with pain or instability in/from the knee Any time going for walks, managing or climbing stairs. Achilles Tendinitis: An overuse injury with the Achilles tendon, https://www.theorthopaedicandpainpractice.com/do-i-have-a-knee-tendon-injury/?_gl=1*xbbxlb*_up*MQ..&gclid=Cj0KCQjwkt6aBhDKARIsAAyeLJ2krYJSOuy5mZksrNqH-VDjQwW1ScD49yD8BUWysDG6u6bJPCSbXVUaAuCPEALw_wcB