Multiple epiphyseal dysplasia type 7

What it is

A rare multiple epiphyseal dysplasia characterized by mild short stature, joint pain and early-onset osteoarthropathy, frequently requiring joint replacement. Radiographs from affected individuals may manifest features typical of Desbuquois dysplasia, including irregularly shaped capital femoral epiphyses, a short femoral neck (resembles the ''Swedish key'' appearance of the proximal femur) and advanced carpal ossification in the hands. However, some other features typical of Desbuquois dysplasia like joint dislocations, scoliosis, coronal clefts, or other hand anomalies including accessory ossification centers and/or delta phalanx are not observed. Anterior wedging of vertebral bodies, small epiphyses at the knees with metaphyseal flare may be present. Patients have normal metacarpal and phalangeal lengths, no distinctive facies nor neurologic complications.

Key facts

Prevalence

<1 / 1 000 000

Age of onset

Childhood

Inheritance

Autosomal recessive

Classified as

Disease

Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.

Gene

ICD-10 codes

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Cross-references