[Removal of a bent femoral nail : Case report: treatment strategy of a complex femoral deformity with a bent femoral nail in situ since 36 years]

To remove a bent femoral nail is always a challenging task for a surgeon. In the last 20 years several case reports and descriptions of techniques are to be found in literature, the goal being to weaken the nail at the apex and then straightening it in situ in most cases. Those reports all have one parameter in common: the necessity to remove the nail relates to a refracture of the femur.We report the case of a patient who presented with the explicit wish to have a bent femoral nail removed and a femoral angulation corrected because of pain in the ipsilateral hip. A femoral fracture had been treated by a Küntscher nail in 1982. A refracture with severe bending of the nail had occurred a short time later, which was treated conservatively without a second surgical procedure.We can show that a planned removal of a bent and well-osseointegrated Küntscher nail can be achieved without complications and that thereby a multiplane angulation in the femur can be corrected, paving the way for a future arthroplasty in this specific case.

A Novel, Low-Cost Telescopic Nail Design for Prevention and Treatment of Osteogenesis Imperfecta Associated Long-Bone Pathological Fractures in Children

Telescopic nailing and intermittent doses of bisphosphonates are now considered the standard treatment for preventing long bone pathological fractures in osteogenesis imperfecta (OI) children. Even though the telescopic nail designs have evolved over time, we are yet to get an affordable, worldwide uniformly and easily available, surgeon-friendly telescopic nail with good rotational stability. We designed a telescopic nail with modifications in Küntscher nail (outer, hollow component) and square nail (inner, solid component). The distal end of the square nail has a slot to allow locking in the distal epiphysis using a threaded K wire. The interlocking geometry between the two nails allows reasonable rotational control while allowing only longitudinal movements. This novel, low-cost, rotationally stable telescopic nail design is a good alternative to existing telescopic nails in the market, especially for children from low and middle-income countries (LMIC) where affordability and uniform availability are a concern.

[A minimally invasive technique for removal of a firmly fixed Küntscher nail in primary hip arthroplasty]

This article reports the case of an 80-year-old male patient who presented to this hospital with symptomatic arthritis of the left hip. The special feature of this case was a Küntscher nail in the left femur that had been in situ for more than 50 years. Before implantation of the total hip arthroplasty the nail first had to be removed. As the Küntscher nail is a rarity nowadays there is no standardized procedure for the removal of such a nail. This case report describes a minimally invasive possibility to remove a Küntscher nail in total hip arthroplasty.

[Medial fracture of the femoral neck with enclosed Küntscher nail]

We report about an 81-year-old male patient who suffered a medial femoral neck fracture after a fall on the left leg. A total hip arthroplasty was planned based on the appropriate indications. The planning was complicated by the presence of an intramedullary Küntscher femoral nail inserted after a motorcycle incident approximately 60 years ago. After fenestration of the proximal lateral femur, the nail was sawn off and a cemented total hip arthroplasty and plate osteosynthesis were performed.