Video Technique on Medial Open Reduction for DDH.

BACKGROUND

The most common approach for the open reduction of DDH is the anterolateral approach. After an initial report by Weinstein and Ponseti, the medial approach for DDH has garnered great interest.

PURPOSE

The medial approach for DDH allows easy access to the structures which block the reduction of the femoral head into the acetabulum; namely the psoas tendon, inferior capsule, and ligamentum teres. It uses a skin crease small incision in the groin with excellent cosmetic outcome and is very well hidden.

METHOD

The classical medial approach described by Ludloff uses interval between the adductor brevis and pectineus. The anteromedial approach to the hip uses the same incision but interval between the pectineus and femoral neurovascular bundle and allows better handling of medial circumflex vessels. A technical modification suggested by Late Ian Torode involves tenodesis of the ligamentum teres which improves the stability of the hip reduction. This video demonstrates the medial approach for the open reduction of DDH in a fourteen months old girl with medium-term follow-up results. The technique of the tenodesis of ligamentum teres is also shown.

RESULT

The medial approach is safe with a low rate of re-dislocation; it does not violate the hip abductors and iliac apophysis. The major disadvantage of the medial approach is the restricted operative field and a higher rate of AVN. Many authors have found the rate of AVN comparable to other approaches and the grade of AVN milder culminating in good long-term results.

CONCLUSION

We have found this approach very useful in children with DDH, before they start walking (when the closed reduction is unstable) and arthrogrypotic children with hip dislocation.

SUPPLEMENTARY INFORMATION

The online version contains supplementary material available at 10.1007/s43465-021-00502-6.