Presentation
Patient can sit unsupported and has good head control. Bear weight on feet if pelvis and knees are supported, not able to stand independently or to walk.
Patient Data
X-ray pelvis frontal view, including both hip joints in AP and frog-leg lateral views. There is lateral subluxation of both hip joints on the frontal projection. The lateral migration index measures 60 degrees approximately on both sides. However, in frog-leg lateral view, both femoral heads are well seated within their respective acetabular cavities.
Shallow acetabular roofs. The acetabular angle on the right measures 35 degrees and on the left measures 29 degrees.
The joint spaces are maintained.
Conclusion
Bilateral lateral subluxation of the femoral heads as described above.
Case Discussion
Hip subluxation is considered a type of Developmental dysplasia of the hip. It is a state in which the hip joints gradually move out of the hip cavity. Children who are unable to stand or walk with poor muscle tone, e.g. patients suffering from cerebral palsy, and neuromuscular disorders are at higher risk of hip subluxations. Hip dislocation may cause pain and further disability to these children. the subluxation causes spasms, pain, and difficulty in weight-bearing. Therefore, it is important to monitor these kids routinely. This can be done with x-rays and physical examination. Early detection will help in treating these kids early.
Appreciation is extended to Dr. Ajay Prashanth Dsouza, Dr. Muhammad Anwar, Dr. Elham Ahmed Elgabaly, Jukha Shater Ali Ali AL Badawi, and fellow Radiographers / Radiology Nurses, Department of Radiology, Al Jalila Children's Speciality Hospital, Dubai, UAE, for contributing to this case.