Ansa cervicalis (AC) frequently shows its variations in the formation and distribution pattern. However, variation in its looping pattern associated with abnormal topographic disposition is relatively rare. Knowledge on the possible deviations in the looping pattern is clinically important, to avoid iatrogenic injuries in surgical procedures. We report here a concurrent rare case of double loop...

Introduction The infrahyoid (strap) muscles act on the thyroid cartilage of the larynx and the hyoid bone to function in speech, swallowing and mastication. The infrahyoid group consists of four paired muscles: sternohyoid, sternothyroid, omohyoid and thyrohyoid. The infrahyoid muscles are hypaxial derivatives, formed by moyblasts of cervical myotomes. The omohyoid consists of superior and infe...

OBJECTIVES/HYPOTHESIS To investigate the efficacy of laryngeal reinnervation with ansa cervicalis among unilateral vocal fold paralysis (UVFP) patients with different denervation durations. STUDY DESIGN We retrospectively reviewed 349 consecutive UVFP cases of delayed ansa cervicalis to the recurrent laryngeal nerve (RLN) anastomosis. Potential influencing factors were analyzed in multivariab...

OBJECTIVE To systematically review outcomes of reinnervation techniques for the management of unilateral vocal fold paralysis (UVFP). DATA SOURCES Medline and Cochrane databases for English-language studies published between 1966 and 2009 on the surgical management of UVFP. REVIEW METHODS Studies were excluded if they reported on bilateral vocal fold paralysis, used nonhuman subjects, or di...

BACKGROUND Vagus nerve stimulation (VNS) is a palliative treatment for drug resistant epilepsy for which the efficacy and safety are well established. Accumulating evidence suggests that ascending vagal signals modulate abnormal cortical excitability via various pathways. However, there is no direct evidence for an ascending conduction of neural impulses in a clinical case of VNS. OBJECTIVE W...

OBJECTIVE To evaluate the long-term efficacy of arytenoid adduction (AA) combined with ansa cervicalis-recurrent laryngeal nerve anastomosis (ACN-RLN) in the treatment of unilateral vocal fold paralysis. DESIGN Retrospective review of clinical records. SETTING Institutional practice. PATIENTS Nine patients with severe paralytic dysphonia with large glottal gap were included. Voice outcome...

OBJECTIVE To review surgical interventions for pediatric unilateral vocal fold immobility (UVFI). DESIGN Retrospective medical chart review. SETTING Two tertiary academic centers. PATIENTS All children who underwent vocal fold medialization for dysphonia, with or without aspiration, from January 2004 to September 2006. INTERVENTIONS Injection laryngoplasty, ansa cervicalis-recurrent lar...

A variety of substituted titanocene and ansa-titanocene complexes have been synthesized and characterized using traditional methods. The cytotoxic activity of the different titanocene complexes was tested against tumour cell lines human adenocarcinoma HeLa, human myelogenous leukemia K562, human malignant melanoma Fem-x and normal immunocompetent cells, peripheral blood mononuclear cells PBMC. ...

9 Titanocene and zirconocene complexes with a phenyl or I-naphthyl substituent in one ,B-position of each Cs-ring ligand and with an interannular tetramethylethanoor dimethylsilano-bridge have been prepared. Racemic complex isomers, which are formed together with varying amounts of their meso isomers, were separated from the latter and characterised by lH NMR spectroscopy and X-ray crystallogra...