Bilateral congenital radioulnar synostosis
Diagnosis certain
Updates to Case Attributes
Presentation
was changed:
Limited forearm range of motion in supination/pronation.
Body
was changed:
Congenital radioulnar synostosis is the most common congenital functional disorder of the elbow. It demonstrates an autosomal dominant pattern of inheritance with no sex predilection, and is bilateral in 60-80% of cases. Approximately 400 cases of congenital radioulnar synostosis have been documented in the worldwide literature, and the average age at diagnosis is 6 years.
Four types of congenital synostosis are described, as follows:
- type I
-: fibrous synostosis, does not involve bone,and is associated with a normal, articulating radial head. - type II
-: osseous synostosis, associated with a normal, articulating radial head. - type III
-: osseous synostosis, with a hypoplastic and posteriorly dislocated radial head. - type IV
-: short osseous synostosis with an anteriorly dislocated, mushroomshaped-shaped radial head.
-<p><strong>Congenital radioulnar synostosis</strong> is the most common congenital functional disorder of the elbow. It demonstrates an autosomal dominant pattern of inheritance with no sex predilection, and is bilateral in 60-80% of cases. Approximately 400 cases of congenital radioulnar synostosis have been documented in the worldwide literature, and the average age at diagnosis is 6 years.</p><p>Four types of congenital synostosis are described, as follows: </p><ul>-<li>type I - fibrous synostosis, does not involve bone, and is associated with a normal, articulating radial head. </li>-<li>type II - osseous synostosis, associated with a normal, articulating radial head. </li>-<li>type III - osseous synostosis, with a hypoplastic and posteriorly dislocated radial head. </li>-<li>type IV - short osseous synostosis with an anteriorly dislocated, mushroom shaped radial head.</li>- +<p><strong>Congenital radioulnar synostosis</strong> is the most common congenital functional disorder of the elbow. It demonstrates an autosomal dominant pattern of inheritance with no sex predilection and is bilateral in 60-80% of cases. Approximately 400 cases of congenital radioulnar synostosis have been documented in the worldwide literature, and the average age at diagnosis is 6 years.</p><p>Four types of congenital synostosis are described, as follows: </p><ul>
- +<li>type I: fibrous synostosis, does not involve bone and is associated with a normal, articulating radial head</li>
- +<li>type II: osseous synostosis, associated with a normal, articulating radial head</li>
- +<li>type III: osseous synostosis, with a hypoplastic and posteriorly dislocated radial head</li>
- +<li>type IV: short osseous synostosis with an anteriorly dislocated, mushroom-shaped radial head</li>
Diagnostic Certainty
was set to
.
Systems changed:
- Paediatrics
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