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BACKGROUND: A smaller humerus in some patients makes the use of a large fragment fixation plate difficult. Dual small fragment plate constructs have been suggested as an alternative. OBJECTIVE: This study compares the biomechanical performance of three single and one dual plate construct for mid-diaphyseal humeral fracture fixation. METHODS: Five humeral shaft finite element models (1 intact and 4 fixation) were loaded in torsion, compression, posterior-anterior (PA) bending, and lateral-medial (LM) bending. A comminuted fracture was simulated by a 1-cm gap. Fracture fixation was modelled by: (A) 4.5-mm 9-hole large fragment plate (wide), (B) 4.5-mm 9-hole large fragment plate (narrow), (C) 3.5-mm 9-hole small fragment plate, and (D) one 3.5-mm 9-hole small fragment plate and one 3.5-mm 7-hole small fragment plate. RESULTS: Model A showed the best outcomes in torsion and PA bending, whereas Model D outperformed the others in compression and LM bending. Stress concentrations were located near and around the unused screw holes for each of the single plate models and at the neck of the screws just below the plates for all the models studied. Other than in PA bending, Model D showed the best overall screw-to-screw load sharing characteristics. CONCLUSION: The results support using a dual small fragment locking plate construct as an alternative in cases where crutch weight-bearing (compression) tolerance may be important and where anatomy limits the size of the humerus bone segment available for large fragment plate fixation. [ABSTRACT FROM AUTHOR]

El artículo discute el tratamiento para las fracturas del radio distal. Algunas de las recomendaciones conocidas incluyen el acortamiento radial, la inclinación radial y la escalón articular de la articulación radiocarpiana. Estas opciones van desde la reducción cerrada hasta la reducción abierta con placas. Estas placas permiten el restablecimiento directo de la anatomía y una más rápida recuperación.

It is now recognized that the treatment of many orthopaedic injuries can be, and in many cases should be, deferred until a later date. For example, surgical repair of most fractures of the proximal and distal tibia is now delayed until soft-tissue healing has occurred. Acute treatment involves only provisionally reducing and stabilizing such fractures using a joint-spanning external fixator. However, situations occur in the emergency department in which emergency treatment, even if it is just temporizing in nature, must be done immediately. Often, such treatment is outside the comfort zone of the responsible orthopaedic surgeon, even physicians with training and experience in orthopaedic trauma. Orthopaedic surgeons will benefit from updated information on current methods for the emergency management of limb- and/or life-threatening injuries in adults. Such treatment is often provisional in nature, treating only the urgent component of the injury (such as a compartment syndrome associated with a complex tibial plateau fracture). It is important for orthopaedic surgeons to understand how to get "through the night" so that later appropriate definitive care is facilitated to optimize patient outcomes.