Accessory NerveAccessory Nerve InjuriesAccessory Nerve DiseasesNerve TransferShoulderNeck DissectionScapulaBrachial Plexus NeuropathiesMuscular Atrophy, SpinalParalysisBrachial PlexusShoulder JointShoulder PainSMN Complex ProteinsSurvival of Motor Neuron 1 ProteinSurvival of Motor Neuron 2 ProteinSpinal CordMuscular AtrophyNodose GanglionSpinal Muscular Atrophies of ChildhoodNeck MusclesGlossopharyngeal Nerve