Coxa vara

Jump to navigation Jump to search
Coxa vara
FemurAngles.jpg
Different femoral abnormalities.
ICD-10 M21.1, Q65.8
ICD-9 736.32, 755.62

WikiDoc Resources for Coxa vara

Articles

Most recent articles on Coxa vara

Most cited articles on Coxa vara

Review articles on Coxa vara

Articles on Coxa vara in N Eng J Med, Lancet, BMJ

Media

Powerpoint slides on Coxa vara

Images of Coxa vara

Photos of Coxa vara

Podcasts & MP3s on Coxa vara

Videos on Coxa vara

Evidence Based Medicine

Cochrane Collaboration on Coxa vara

Bandolier on Coxa vara

TRIP on Coxa vara

Clinical Trials

Ongoing Trials on Coxa vara at Clinical Trials.gov

Trial results on Coxa vara

Clinical Trials on Coxa vara at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on Coxa vara

NICE Guidance on Coxa vara

NHS PRODIGY Guidance

FDA on Coxa vara

CDC on Coxa vara

Books

Books on Coxa vara

News

Coxa vara in the news

Be alerted to news on Coxa vara

News trends on Coxa vara

Commentary

Blogs on Coxa vara

Definitions

Definitions of Coxa vara

Patient Resources / Community

Patient resources on Coxa vara

Discussion groups on Coxa vara

Patient Handouts on Coxa vara

Directions to Hospitals Treating Coxa vara

Risk calculators and risk factors for Coxa vara

Healthcare Provider Resources

Symptoms of Coxa vara

Causes & Risk Factors for Coxa vara

Diagnostic studies for Coxa vara

Treatment of Coxa vara

Continuing Medical Education (CME)

CME Programs on Coxa vara

International

Coxa vara en Espanol

Coxa vara en Francais

Business

Coxa vara in the Marketplace

Patents on Coxa vara

Experimental / Informatics

List of terms related to Coxa vara

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]


Overview

A Coxa vara is a deformity of the hip, whereby the angle between the ball and the shaft of the femur is reduced to less than 120 degrees. This results in the leg being shortened, and therefore a limp occurs. It is commonly caused by injury, such as a fracture. It can also occur when the bone tissue in the neck of the femur is softer than normal, meaning it bends under the weight of the body. This may either be congenital, also known as Mau-Nilsonne Syndrome, or the result of a bone disorder.

Pathophysiology

The most common cause of coxa vara is either congenital or developmental. Other common causes include metabolic bone diseases (e.g. Paget's disease of bone), post Perthes deformity, osteomyelitis, post traumatic (due to a malunion of a intertrochanteric fracture). Shepherds Crook deformity is a severe form of coxa vara where the proximal femur is severely deformed with a reduction in the neck shaft angle beyond 90 degrees. It is most commonly a sequelae of osteogenesis imperfecta, Paget's disease, osteomyelitis, tumor and tumor-like conditions (e.g. fibrous dysplasia).

Diagnosis

Symptoms

The condition is usually asymptomatic if congenital or developmental. However in unilateral cases (e.g. post traumatic), there maybe shortening, leading to a short limb gait characterized by limp which is seen as a vertical dip on the affected side during the stance phase (as opposed to a lurch characterized in a Trendelenburg gait). In severe cases abduction maybe severely restricted, causing a waddling type gait.

Usual symptoms include pain, stiffness, and difficulty in walking.

The biomechanics of the hip will be affected as the lever arm is lengthened causing more shear forces through the femoral neck predisposing it to stress fractures. This may also lead to progression of the deformity.

Physical Examination

The patient may have a short limbed gait, or in severe cases a Trendelenburg gait (due to restriction of abduction). The Trendelenburg test maybe positive.

Imaging

The diagnosis is mainly radiological. Clinical signs include a widened bitrochanteric measurement.

Treatment

Treatment depends on the cause of the condition. Most cases do not require any treatment. If treatment is required, it is usually a valgus osteotomy of the femur fixed by an angled blade plate device or even a DHS.

See also

Template:Diseases of the musculoskeletal system and connective tissue

de:Coxa vara it:Coxa vara sv:Mau-Nilsonnes syndrom

Template:WH Template:WS