Xrays in DDH — OrthopaedicPrinciples.com

</p> <p><a href="https://orthopaedicprinciples.com/wp-content/uploads/2020/07/radiographs-for-ddh.jpg"><img decoding="async" src="https://orthopaedicprinciples.com/wp-content/uploads/2020/07/radiographs-for-ddh.jpg" alt="" width="1676" height="1406" class="aligncenter size-full wp-image-32243" srcset="https://orthopaedicprinciples.com/wp-content/uploads/2020/07/radiographs-for-ddh.jpg 1676w, https://orthopaedicprinciples.com/wp-content/uploads/2020/07/radiographs-for-ddh-300x252.jpg 300w, https://orthopaedicprinciples.com/wp-content/uploads/2020/07/radiographs-for-ddh-768x644.jpg 768w, https://orthopaedicprinciples.com/wp-content/uploads/2020/07/radiographs-for-ddh-1024x859.jpg 1024w" sizes="(max-width: 1676px) 100vw, 1676px" /></a></p> <p>X-ray Findings in Developmental Dysplasia of Hip (DDH)<br /> Important X-ray Findings<br /> <strong>Acetabular Changes</strong><br /> Increased acetabular index<br /> Shallow acetabulum<br /> Increased acetabular slope<br /> Poor superolateral coverage of femoral head<br /> <strong>Femoral Head Findings</strong><br /> Lateral and superior displacement of femoral head<br /> Disruption of Normal Lines<br /> <strong>Hilgenreiner Line</strong><br /> Horizontal line through triradiate cartilages<br /> Femoral head should lie below this line<br /> <strong>Perkin Line</strong><br /> Vertical line drawn perpendicular to Hilgenreiner line at lateral acetabular edge<br /> Femoral head should lie in inferomedial quadrant<br /> <strong>Shenton Line</strong><br /> Smooth arc formed by inferior femoral neck and superior obturator foramen<br /> Broken/disrupted in DDH<br /> Quadrant Position<br /> Femoral head displaced into superolateral quadrant<br /> Other Findings<br /> Increased femoral neck anteversion<br /> Valgus neck-shaft angle (coxa valga)<br /> Secondary pelvic asymmetry in unilateral cases<br /> <strong>Important Angles</strong><br /> Acetabular Index</p> <p>Acetabular Index<25 after infancy Increased in DDH Normally decreases with age Classic Radiographic Signs Empty acetabulum Lateralization of proximal femur Delayed ossification of femoral head </p> <div class="post-views content-post post-43543 entry-meta load-static"> <span class="post-views-icon dashicons dashicons-chart-bar"></span> <span class="post-views-label">Post Views:</span> <span class="post-views-count">39</span> </div><div class='rp4wp-related-posts'> <h3>Related Posts</h3> <ul> <li><div class='rp4wp-related-post-content'> <a href='https://orthopaedicprinciples.com/generation-of-xrays-2/'>Generation of Xrays</a><p>Courtesy: Rishi Dhir</p></div> </li> <li><div class='rp4wp-related-post-image'> <a href='https://orthopaedicprinciples.com/ddh-screening-diagnosis-management/'><img width="150" height="150" src="https://orthopaedicprinciples.com/wp-content/uploads/2020/04/DDH-Closed-reduction-and-hip-spica-Cast-150x150.jpg" class="attachment-thumbnail size-thumbnail wp-post-image" alt="" 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