Knock knee also called "knock-knee deformity," "knock-knee syndrome," "knocked knee" or "genu valgum" is an incorrect alignment around the knee that can affect people of all ages. If left untreated, it can lead to knee pain and joint degeneration. Correction of the deformity will improve knee mechanics and walking capability, reduce pain and prevent a rapid progression of damage to the knee. Knock knee is a condition in which the knees bend inward and touch or "knock" against one another, even when a person is standing with their ankles apart. This places excessive force on the outer side of the knee, which can cause pain and damage over time. Knock knee is usually bilateral - affecting both legs - but in some cases, it may only affect one knee. Temporarily knocked knees are part of a standard developmental growth stage for most children.
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What is knock knees? Knock knees in infants: Knock knees are not typical in infants.
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However, many infants have bowlegs, a condition in which both legs curve outward, up until they are about 24 months old. Knock knees in toddlers: Knock knees usually become apparent when a child is 2 to years old.
The knees may tilt increasingly inward up until about age 4 or 5. Some children continue to have knock knees into adolescence. Stages of development What are the symptoms of knock knees?
Symptoms include: symmetric inward angulation of the knees ankles remain apart while the knees are touching unusual walking pattern outward rotated feet What causes knock knees? Less often, knock knees is caused by a more serious disorder: Genetic conditions such as skeletal dysplasias or metabolic bone disease such as rickets can cause knock knees.
Obesity can contribute to knock knees or cause gait abnormalities that resemble knock knees. An injury to the growth area of the shinbone tibia or thighbone femur may result in just one inward-tilting knee.
Bone corrective osteotomies and prosthetic joint replacement may be used depending upon the patient's age and symptomatology in terms of pain and functional impairment.
Weight loss and substitution of high-impact for low-impact exercise can help slow progression of the condition. With every step, the patient's weight places a distortion on the knee toward a knocked knee position, and the effect is increased with increased angle or increased weight.
Even in the normal knee position, the femurs function at an angle because they connect to the hip girdle at points much further apart than they connect at the knees. Working with a physical medicine specialist such as a physiatristor a physiotherapist may assist a patient learning how to improve outcomes and use the leg muscles properly to support the bone structures.
Alternative or complementary treatments may include certain procedures from Iyengar Yoga or the Feldenkrais Method.
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Paediatr Int Child Health". Paediatr Int Child Health.
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doi : PMID S2CID JAAOS: Global Research and Reviews. PMC J Musculoskelet Surg Res. Archives of Iranian Medicine.
A one year follow-up study". BMC Musculoskeletal Disorders.
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ISSN Current Reviews in Musculoskeletal Medicine. ISSN X. Analysis of long limb radiographs from the multicenter osteoarthritis MOST study". Osteoarthritis and Cartilage.
The Journal of Bone and Joint Surgery, American Volume. Surgery may be needed to treat the condition. X-rays: Left preoperative image showing knock knee.
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Right postoperative image showing leg alignment after surgical correction and removal of metal plates. Knock knee can be caused by an underlying congenital or developmental disease or arise after an infection or a traumatic knee injury.
Kissing knock knee
Common causes of knock knees include:. Other symptoms, including pain, are often a result of the gait manner of walking adopted by people with knock knees.
A person may also have other symptoms from an underlying condition that is causing the knock-knee syndrome. In people of all age groups who have knock knees, one or both knees is abnormally overloaded.
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This excessive force can lead to pain, further bone deformity, knee instability and progressive degeneration of the knee joint. In particular, adult patients who have been knock-kneed for many years often overload the outside lateral compartment of the knee, and stretch the inside medial collateral ligament - MCL. These forces can cause pain, knee instability and arthritis.
They will also do a physical examination of the legs and gait. Standing-alignment X-ray or EOS images will help confirm the diagnosis.
Knock knee (also called "knock-knee deformity," "knock-knee syndrome," "knocked knee" or "genu valgum") is an incorrect alignment around the knee that can affect people of all ages. If left untreated, it can lead to knee pain and joint degeneration. Correction of the deformity will improve knee mechanics and walking capability, reduce pain and Genu Varum = knock kneed; shortens lateral soft tissues. Commonly referred to as 'kissing kneecaps' or 'squinting patellas' Genu Recurvatum = hyperextension of the knees & increased patellofemoral contact pressures. External femoral rotation increases medial side patellar contactFile Size: 1MB Oct 01, Bone contusions in both surfaces of the knee (kissing contusion) are rather rare complex injuries of the knee, and their importance has not been well documented. These characteristic lesions, which occur on both the femoral and tibial condyle, are of great importance not only in that they are often a sign of more serious associated injury, but also because they may give rise to prolonged Cited by: 24
These are radiological images of the leg from hip down to the ankle, which help the doctor locate the exact location and mechanical axis of the deformity. For mild cases of knock knee in children or adolescents, bracing may reposition the knees.
When this does not work, or if the patient is an adult at the time of diagnosis, a knee-realignment osteotomy is done to prevent or delay the need for knee replacement. If knock knee is caused by an underlying disease or infection, that condition will be addressed before any orthopedic correction begins.
Treatment for mild cases of knock knee in children or adolescents may include braces to help bones grow in the correct position.
If a gradual correction does not occur, surgery may be recommended. In the growing child, guided-growth minimal-incision surgery may be used to encourage the leg to gradually grow straight.
Watch this story of Maggie, a teenager who had recurring knee sprains and other injuries before learning she had knock knee, which was causing these problems. In severe cases and in skeletally mature adolescents and in adults, an osteotomy - in which bone is cut and then realigned - may be needed to straighten the leg.
X-ray or EOS images are used to determine the location and magnitude of the deformity. In most cases, the femur thighbone is treated.
Genu valgum, commonly called " knock-knee ", is a condition in which the knees angle in and touch each other when the legs are straightened. Individuals with severe valgus deformities are typically unable to touch their feet together while simultaneously straightening the nhosabsafaris.comlty: Medical genetics Knock knees are usually part of a child's normal growth and development. Most young children have knock knees to some degree for a period of time, though in some children it is more visible. In rare cases, knock knees could be a sign of an underlying bone disease, particularly when the condition appears for the first time when a child is 6 or older