Managing radial nerve injuries associated with humeral fracture

Abstract

The overall prevalence of radial nerve injury after humeral shaft fractures is up to 18% representing the most common peripheral nerve injury associated with long bone fractures. Spiral or oblique fractures of the junction between the middle and distal third of the humeral shaft are at greater risk for radial nerve injury. Iatrogenic damage to the radial nerve may also occur during manipulations of closed reduction. A prospective study between 2017-2019 following 5 patients (all male, with ages between 30 and 56 years old), who were treated at our clinic for complete radial nerve palsy after a high-energy fracture of the humerus. All the patients were followed-up for a mean of 6 months (range 4 - 15 months) post op. The first 3 cases showed the initial signs of recovery 4 weeks after the operation. In the last 2 cases a palliative radial intervention was required. The consequences of the radial nerve palsy associated with humeral fractures is strongly related to trauma mechanism. In high energy fractures, severe contusion or transection of the nerve must be expected. In this case, nerve recovery is unlikely and the patients should be informed of the poor prognosis and the need of tendon transfers.