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A D Delgado-Martinez1, E C Rodríguez-Merchán2, C Zarzuela-Jiménez3

  • 1Servicio de Cirugía Ortopédica, Hospital Universitario de Jaén, 23007 Jaén, Spain; Área de Cirugía, Departamento de ciencias de la salud, Universidad de Jaén, 23071 Jaén, Spain.

Revista Espanola De Cirugia Ortopedica Y Traumatologia
|April 23, 2026
PubMed
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A new dynamic fixation technique effectively addresses subtrochanteric nonunion, enabling healing, alignment correction, and immediate weight-bearing. Further multicenter studies are ongoing to validate this promising surgical approach for complex fractures.

Area of Science:

  • Orthopedic surgery
  • Trauma surgery
  • Bone healing

Background:

  • Subtrochanteric nonunion presents a significant clinical challenge with varied treatment outcomes.
  • Existing surgical techniques for subtrochanteric nonunion have limitations in addressing all aspects of fracture healing and patient recovery.
  • A comprehensive literature review is needed to evaluate current fixation methods and introduce novel solutions.

Purpose of the Study:

  • To present a novel dynamic fixation system for subtrochanteric nonunion.
  • To critically analyze existing literature on surgical techniques for subtrochanteric nonunion from 2000 to 2025.
  • To compare the effectiveness of different methods regarding alignment, bone grafting, and weight-bearing protocols.

Main Methods:

  • Detailed surgical technique of a new dynamic fixation system for subtrochanteric nonunion.
Keywords:
CaderaHipNo uniónNonunionOsteosynthesisOsteosíntesisPseudoartrosisSubtrocantéricoSubtrochanteric

Related Experiment Videos

  • Systematic literature review of aseptic subtrochanteric nonunion fixation (2000-2025).
  • Analysis of 26 selected studies focusing on varus/shortening correction, debridement, bone grafting, device type, and immediate weight bearing.

    • Main Results:

    • Extramedullary systems showed superior varus correction when needed.
    • Leg shortening was often accepted, unlike varus correction.
    • Debridement and bone grafting were common, effective for atrophic but not hypertrophic nonunions.
    • Most devices lacked dynamic compression and immediate weight-bearing capability, crucial for elderly patients.

    Conclusions:

    • The novel dynamic technique addresses key issues in subtrochanteric nonunion: promoting healing, correcting alignment and leg length, and allowing immediate weight bearing.
    • While initial results are promising, a prospective, multicenter study is necessary to confirm efficacy and long-term outcomes.
    • The dynamic system offers a potential advancement in managing challenging subtrochanteric nonunion cases.