Hyperextended Knee Symptoms: Symptoms are common with this condition. They include pain, swelling, stiffness, tenderness and weakness of the knee joint. The symptoms may appear suddenly or gradually over a period of weeks or months. Sometimes they last only a few days but other times they persist for several weeks or even longer. Some of the symptoms are:
Pain – The most obvious symptom is pain. Pain occurs when there is some kind of injury to your knee joint.
There are many causes for this type of pain such as trauma, cartilage damage, arthritis or even a tear in the ligaments (the connective tissue between bones). Other possible causes include degenerative changes in the cartilage itself or muscle spasms.
Swelling – Soreness and swelling occur when there is inflammation in the knee joint. Inflammation is caused by a variety of things including: blood vessels, bacteria, viruses, fungi and even fungus spores.
When these organisms cause irritation to the tissues surrounding your joints they produce fluid which collects under pressure. This fluid then forms a scab called a puss plug. Pus plugs are not good because it prevents proper healing of the damaged area around your knee joint.
Stiffness – Stiffness is the result of pain and swelling. As a result of these problems you have limited range of motion in your knee joint.
The better you take care of yourself the sooner you will be able to bend and flex your knee again. (See treatment).
Tenderness – Pain and swelling in your knee may cause you to feel extra tenderness around that area. You may hear popping and cracking sounds inside your knee joint.
This is caused by the synovial fluid (the fluid that allows your knee to move back and forth) as it moves around under pressure.
Weakness – It is common for weight bearing joints to experience weakness in some form or another. The knee joint, more than any other joint in your body is in a prone position to weakness and instability.
This causes the muscles that surround and support it to become fatigued more quickly.
Sources & references used in this article:
Gait and balance of transfemoral amputees using passive mechanical and microprocessor-controlled prosthetic knees by KR Kaufman, JA Levine, RH Brey, BK Iverson… – Gait & posture, 2007 – Elsevier
How to FIX my Hyperextended knees? by W KNEES – jointpainclinic.co.uk
Osteoarthritis of the knee joint and hyperextension of the knee joint after stroke by K Jefferis – 2002 – ourarchive.otago.ac.nz
Clinical features and treatment of “Non-dislocated hyperextension tibial plateau fracture” by J Liangjun, Z Qiang, P Zhijun… – … Surgery and …, 2020 – josr-online.biomedcentral.com
Persistently painful sprained ankle by PAFH Renström – JAAOS-Journal of the American Academy of …, 1994 – journals.lww.com
Deep transverse frictions in ligament healing by JM Walker – Journal of Orthopaedic & Sports Physical Therapy, 1984 – jospt.org
Treatment of knee sprains: modified Robert Jones or elastic support bandage? by DL Hughes, AC Crosby – Emergency Medicine Journal, 1995 – emj.bmj.com