Pelvic Support Osteotomy; Salvage Procedure in Chronically Dislocated Hips
Case Report: Technical Note on the On-lay Bone Positioning of a Lengthening Nail and Review of the Literature

Pieter Reynders-Frederix*, 1, Cristina Reynders-Frederix2, Muhammad Wajid3
1 CHU Brussels - Orthopedics Arthur van Gehuchtenplein 4, Brussels 1020, Belgium
2 CHU Brussels, Saint-Pierre - Rehabilitation Medecin Brussels, Belgium
3 Shalamar Medical & Dental College Shalamar Road, Department of Orthopedics, Lahore 54580, Pakistan

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© Reynders-Frederix et al.; Licensee Bentham Open.

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (, which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

* Address correspondence to this author at the CHU Brussels - Orthopedics Arthur van Gehuchtenplein 4, Brussels 1020 Belgium; Tel: 32473361420; E-mail:



Young patients with a acquired dislocation of the hip with concomitant shortening of the lower limb is a difficult diagnostic problem with few definite treatment options.


We used the technique, originally described by Ilizarov, with a double femur osteotomy and lengthening the femur. Lengthening was done with a sub muscular placed on-lay femur distraction rod. Distraction of the rod was done by fluid mechanics. After lengthening, the distraction was secured by a parked plate by locking the distal part of the plate.


This patient needed a lengthening of 60 mm, distraction time was 36 days with a distraction index of 1.61 mm per day and a healing index of 31.4 days per cm lengthening.We encountered one complication in which an exchange of the plastic feeding tube was needed at 20 days post-surgery.


In the reported case we could improve gait with reduced limping and equalizing her leg length discrepancy.

Keywords: Bone lengthening, Congenital hip dislocation, Hydraulics Ilizarov technique, Lengthening nails, Pelvic osteotomies.