1.1
The limited quantity of evidence on the efficacy of phrenic nerve transfer in brachial plexus injury shows useful recovery of arm function in some patients, but there is very little information about long-term functional and quality-of-life outcomes, and evidence on safety shows some impairment of respiratory function. However, patients with brachial plexus injuries are often very disabled and treatment options may be limited. Therefore, this procedure may be used with normal arrangements for clinical governance, consent and audit.