Clinical and radiological outcome of the Chimaera short nailing system in inter- and subtrochanteric fractures

Traverso, Aurélien; Ngo, Trieu-Hoai-Nam; Gil, Guillem Fernandez; Lannes, Xavier; Steinmetz, Sylvain; Moerenhout, Kevin

doi:10.1016/j.injury.2023.01.027

Cited by 2 publications

(2 citation statements)

References 15 publications

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“…This is not the first telescoping lag screw system and clinical results of telescoping devices have already been published in the literature. The results of the Chimaera trochanteric nail (Orthofix®, Lewisville, Texas, USA) were recently reported by Traverso et al [ 21 ]. The study considered a small cohort of 99 proximal femur fractures treated with the same nail system and reported 1 case of cut-out.…”

Section: Discussionmentioning

confidence: 90%

A dual telescoping lag screw nailing system for intertrochanteric fractures: retrospective analysis of clinical and radiologic outcomes

Innocenti,

Leggieri,

Secci

et al. 2024

Eur J Orthop Surg Traumatol

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Background and purpose The aim of this study was to evaluate whether this system is associated with a reduced rate of failure and complications in patients treated for proximal femoral fractures with intramedullary nailing. Materials and methods 742 Patients with AO-OTA 31-A intertrochanteric fractures were enrolled at a single Institution. Functional evaluation was assessed through the Functional Independence Measure (FIM™) instrument and Parker’s New Mobility Score (NMS). Radiological follow-up included the degree of the reduction according to the Baumgartner criteria, the Tip-Apex Distance, and the shortening of the telescoping screws and its lateral protrusion. Results Pre-operative mean FIM™ and NMS were 4.3 (range 1–9) and 98.7 (range 22–126), respectively. At the 12-month follow-up the average FIM™ and NMS were 95.3 (range 22–126) and 3.7 (range 1–9), respectively. Mean shortening of the lag screws was 4.3 mm (range 1–8) and mean lateral protrusion was 1.7 mm (range 0–3). 3 Cases (0.70%) of non-consolidation requiring reoperation were recorded. 1 Case (0.24%) of these cases was also characterized by nail breakage. No case of cut-out has been reported at our follow-up. Conclusions This dual telescoping nail system is effective and safe. The sliding of the telescoping screws within the barrel is able to decrease strain from the femoral head during weight bearing reducing the risk of cut-out.

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Section: Discussionmentioning

confidence: 90%

A dual telescoping lag screw nailing system for intertrochanteric fractures: retrospective analysis of clinical and radiologic outcomes

Innocenti,

Leggieri,

Secci

et al. 2024

Eur J Orthop Surg Traumatol

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show abstract

“…Intramedullary nailing is one possible surgical treatment option for intertrochanteric and subtrochanteric, as well as diaphyseal femoral fractures 1 . A Swedish national data study showed the annual incidence of femoral shaft fractures (6409 fracture identi ed in a period of 7 years) to be 1 per 10 000 person per years 2 . A bimodal age distribution is usually found, with high velocity trauma responsible for fractures in young men and mainly low energy fracture in the female geriatric population 2 .…”

Section: Introductionmentioning

confidence: 99%

Clinical and radiological outcomes of patients treated with the Orthofix Chimaera Long nailing system for proximal and diaphyseal femoral fracture

Traverso

Steinmetz

Ngo

et al. 2023

Preprint

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Background Intramedullary long nailing is a popular method to treat femoral shaft or sub-trochanteric fractures. Various complications have been described such as intraoperative anterior cortical perforation of the distal femoral shaft or post-surgical lateral thigh pain. In order to prevent those possible complications, a new intramedullary nailing system (Chimaera, Orthofix®) was designed. This study aims to evaluate the clinical and radiological results after antegrade intramedullary nailing of traumatic femoral shaft and inter-/subtrochantreric fractures.Methods A prospective cohort study was conducted on 20 consecutive patients with AO/OTA type 31A2.3-A3.3 and type 32A-C fractures treated with the Chimaera long nailing system from December 2017 to January 2021 at our level 1 trauma center. Parker & Palmer and Jenson scores were assessed at 3 months and compared to before the surgery. Radiologic assessment consisted in checking the position of the cephalic screw, using the tip-apex distance (TAD) and Cleveland zone. The mean follow-up was 12.5 (1–33) months.Results Parker and Palmer scores were equivalent to before the fracture for 4 patients (31%); minor changes were seen in 6 patients (46%). Jensen score was equivalent or with maximum gain of 1 point for 11 patients (87%) at 3 months. No intra-operative major complication was recorded. The median TAD was 16.4 mm (IQR 14.0-20.2) and lag screw position was in 85% of patients in the Cleveland central zone. Two patients needed revision surgery. Fracture union occurred in all patient.Conclusion The long Chimaera nailing device showed good functional and radiological outcomes.

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Clinical and radiological outcome of the Chimaera short nailing system in inter- and subtrochanteric fractures

Cited by 2 publications

References 15 publications

A dual telescoping lag screw nailing system for intertrochanteric fractures: retrospective analysis of clinical and radiologic outcomes

A dual telescoping lag screw nailing system for intertrochanteric fractures: retrospective analysis of clinical and radiologic outcomes

Clinical and radiological outcomes of patients treated with the Orthofix Chimaera Long nailing system for proximal and diaphyseal femoral fracture

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