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. 2017 Jun 1;11(3):191-194.
doi: 10.1302/1863-2548.11.160212.

Femoral neck fractures in osteogenesis imperfecta treated with bisphosphonates

M C Papanna  1 , S Tafazal  2 , M J Bell  2 , S N Giles  2 , J A Fernandes  2
Affiliations

Femoral neck fractures in osteogenesis imperfecta treated with bisphosphonates

M C Papanna et al. J Child Orthop. .

Abstract

Purpose: Osteogenesis imperfecta (OI) is a condition characterised by bone fragility and multiple fractures, which cause considerable morbidity in the affected patients. Most cases are associated with mutations in one of the type I collagen genes. Recently, bisphosponates have been used widely to reduce pain and the incidence of fragility fractures in OI in children, even though there have been concerns raised regarding the long-term complications of it due to their effect on the bone. The fragility fractures involving the neck of the femur in children with intramedullary rods in the femoral shaft are very difficult to treat. Although these fractures are frequently un-displaced, they require optimal internal fixation to achieve fracture union. The aim of this study was to assess the clinical and radiological outcomes of OI patients with intracapsular femoral neck fracture treated with headless compression screws.

Method and results: At our institute, we identified seven patients (11 hips) with OI who underwent internal fixation with headless compression screws for a neck of femur fracture between June 2010 and Dec 2012. The time to fractures healing was on average 14 weeks (12 to 16). All patients gained their pre-injury ambulatory status.

Conclusion: It is very challenging and technically demanding for orthopaedic surgeons when treating the fragility fracture of the neck of femur in patients with intramedullary rod in the femoral shaft. The published data regarding the management of these complex conditions are very limited. We describe our experience with the technique of percutaneous headless compression screw fixation for treating the femoral neck fractures in OI patients.

Keywords: Osteogenesis imperfecta; femoral neck fracture; fragility fractures; headless compression screws.

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Figures

Fig. 1
Fig. 1
CT scan showing bilateral femoral neck fractures in an OI patient with an intramedullary rod in situ on the right side.
Fig. 2
Fig. 2
(a, b) Follow-up images showing healed femoral neck fracture with screw in situ.
See this image and copyright information in PMC

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