Meyer dysplasia
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Meyer dysplasia (also known asdysplasia epiphysealis capitis femoris) is a fragmentation and delayed ossification of the femoral capital epiphyses that affects affects the paediatric hips. It is considered more of a normal hip developmental variation rather than a true dysplasia. It can be bilateral in ~50% of cases 3.
Epidemiology
It tends to present at around 2-3 years of age 2. There is a recognised male predilection 3.
Clinical presentation
Patients are usually asymptomatic.
Pathology
There is a delay in development of the nucleus of ossification in the hip which does not occur until ~1,5 years of age. The epiphysis does not collapse and density and structure remain preserved preserved. It usually resolves spontaneously later in childhood.
Radiographic features
Plain film
- the affected epiphysis is smaller in size
- there are often multiple nuclei of ossification, giving the epiphysis a "morulated" appearance; these then tend to fuse at ~5 years of age.
History and etymology
First described by J Meyer in 1964 4.
Differential diagnosis
-<p><strong>Meyer dysplasia</strong> (also known as <strong>dysplasia epiphysealis capitis femoris</strong>) is a fragmentation and delayed ossification of the femoral capital epiphyses that affects the paediatric hips. It is considered more of a normal hip developmental variation rather than a true dysplasia. It can be bilateral in ~50% of cases <sup>3</sup>.</p><h4>Epidemiology</h4><p>It tends to present at around 2-3 years of age <sup>2</sup>. There is a recognised male predilection <sup>3</sup>.</p><h4>Clinical presentation</h4><p>Patients are usually asymptomatic.</p><h4>Pathology</h4><p>There is a delay in development of the nucleus of ossification in the hip which does not occur until ~1,5 years of age. The epiphysis does not collapse and density and structure remain preserved. It usually resolves spontaneously later in childhood.</p><h4>Radiographic features </h4><h5>Plain film</h5><ul>- +<p><strong>Meyer dysplasia</strong> (also known as <strong>dysplasia epiphysealis capitis femoris</strong>) is a fragmentation and delayed ossification of the femoral capital epiphyses that affects the paediatric hips. It is considered more of a normal hip developmental variation rather than a true dysplasia. It can be bilateral in ~50% of cases <sup>3</sup>.</p><h4>Epidemiology</h4><p>It tends to present at around 2-3 years of age <sup>2</sup>. There is a recognised male predilection <sup>3</sup>.</p><h4>Clinical presentation</h4><p>Patients are usually asymptomatic.</p><h4>Pathology</h4><p>There is a delay in development of the nucleus of ossification in the hip which does not occur until ~1,5 years of age. The epiphysis does not collapse and density and structure remain preserved. It usually resolves spontaneously later in childhood.</p><h4>Radiographic features </h4><h5>Plain film</h5><ul>
-</ul><h4>History and etymology</h4><p>First described by <strong>J Meyer</strong> in 1964 <sup>4</sup>.</p><h4>Differential diagnosis</h4><ul><li>- +</ul><h4>History and etymology</h4><p>First described by <strong>J Meyer</strong> in 1964 <sup>4</sup>.</p><h4>Differential diagnosis</h4><ul>
- +<li>
-<a href="/articles/legg-calve-perthes-disease-2">Legg-Calv</a><a title="Legg-Calve-Perthes disease" href="/articles/legg-calve-perthes-disease-2">é</a><a href="/articles/legg-calve-perthes-disease-2">-Perthes disease</a>- +<a href="/articles/perthes-disease">Legg-Calv</a><a href="/articles/perthes-disease">é</a><a href="/articles/perthes-disease">-Perthes disease</a>
-</li></ul>- +</li>
- +<li><a title="multiple epiphyseal dysplasia" href="/articles/multiple-epiphyseal-dysplasia">multiple epiphyseal dysplasia</a></li>
- +</ul>
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