Coxa vara

Coxa vara
Coxa vara
Classification and external resources

Different femoral abnormalities.
ICD-10 M21.1, Q65.8
ICD-9 736.32, 755.62

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. 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, and post traumatic (due to improper healing of a fracture between the greater and lesser trochanter). 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 sequela of osteogenesis imperfecta, Pagets disease, osteomyelitis, tumour and tumour-like conditions (e.g. fibrous dysplasia).



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


The diagnosis is mainly radiological. Clinical signs include a widened bitrochanteric measurement. The patient may have a short limbed gait, or in severe cases a Trendelenburg gait (due to restriction of abduction). Trendelenburg's sign maybe positive.

Synonyms are Femoral Angle and Mikulicz's angle. When a patient is positioned for a radiographic image attempting to demonstrate Coxa Vara it is important that the technician insures that the patient medially rotates the foot 15° on the ipsilateral side (same side) being depicted in the film.


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 dynamic hip screw.

See also

Wikimedia Foundation. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • coxa vara — f. anat. patol. Deformidad del cuello del fémur con una disminución del ángulo formado por el eje de la diáfisis y el del cuello del fémur. En el adulto la causa suele ser traumática y en el adolescente puede ser debida al raquitismo. Se opone a… …   Diccionario médico

  • coxa vara — käk sə var ə n a deformed hip joint in which the neck of the femur is bent downward * * * deformity of the hip in which the angle formed by the axis of the head and neck of the femur and the axis of its shaft is materially decreased; called also… …   Medical dictionary

  • Coxa vara — Klassifikation nach ICD 10 Q65.8 Sonstige angeborene Deformitäten der Hüfte Coxa vara Coxa valga M21.05 Valgusdeformität, anderenorts nicht klassifiziert Hüft …   Deutsch Wikipedia

  • Coxa-vara — La coxa vara, appelée aussi épiphysiolyse des adolescents, coxa retrorsa ou encore épiphysiolyse fémorale supérieure essentielle, est une maladie rare qui apparaît entre 11 et 16 ans. Il s’agit d’un décollement épiphysaire pathologique du fémur… …   Wikipédia en Français

  • coxa vara ou coxa retrorsa — ● coxa vara ou coxa retrorsa nom féminin invariable (latin coxa, hanche, et varus, tourné en dehors) Atteinte de la hanche due à la fermeture de l angle formé par le col du fémur avec la diaphyse. ● coxa vara ou coxa retrorsa (synonymes) nom… …   Encyclopédie Universelle

  • coxa vara luxante — fisura o fractura del cuello del fémur con luxación de la cabeza producida por una coxa vara. Diccionario ilustrado de Términos Médicos.. Alvaro Galiano. 2010 …   Diccionario médico

  • coxa vara luxans — fissure of the neck of the femur with dislocation of the head developing from coxa vara …   Medical dictionary

  • Coxa valga — Classification and external resources Different femoral abnormalities. ICD 10 M21.0, Q65.8 ICD 9 …   Wikipedia

  • Coxa valga — Saltar a navegación, búsqueda Coxa valga segun wilmer y geiler es una deformidad de la cadera en el que el ángulo formado entre la cabeza y cuello del fémur y su diáfisis (la parte larga del hueso) está aumentado,[1] usualmente por encima de 135… …   Wikipedia Español

  • coxa valga — f. anat. patol. Deformidad del cuello del fémur que provoca rotación externa del miembro inferior y un aumento de la abducción, a la vez que disminuye la aducción. El ángulo formado por la diáfisis y el cuello del fémur supera los 120º. Puede ser …   Diccionario médico

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”