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The depressor labii inferioris muscle may be resected (cut and removed) using surgery to correct an asymmetry of the lower lip when smiling. [1] This asymmetry can be caused by paralysis of the marginal mandibular branch of the facial nerve on one side, so the healthy side may be cut to create symmetry. [ 1 ]
If facial paralysis is caused by trauma or tumour surgery, direct reinnervation of the facial muscles (ideally within 72 hours after facial nerve damage) can be achieved by neurorrhaphy, with or without an interposition nerve graft. (Algorithm 1) [7] Neurorrhaphy is a primary end-to-end reconnection of the facial nerve stumps. [8]
A common tradeoff when electing to a neurectomy is that numbness along the nerve distribution is expected. Studies that have measured how bothersome numbness is to patients have found that most patients are not bothered at all by the numbness, and the ones that are find the numbness minimally bothering. [16] [17]
The inferior alveolar nerve, which is a branch of the mandibular nerve, must be identified during surgery and worked around carefully in order to minimize nerve damage. The numbness may be either temporary, or more rarely, permanent. [25] Recovery from the nerve damage typically occurs within three months after repair.
The aim of decompression surgery is to open the affected area and nerve sheath, and to release pressure. This reduces compression on the nerve fibers, improves blood circulation and minimizes damage to distal nerve fibers. Several surgicala approaches are described to achieve decompression: Middle cranial fossa approach [2] Translabarynthine ...
In patients with severe injury, progress is followed with nerve conduction studies. If nerve conduction studies show a large (>90%) change in nerve conduction, the nerve should be decompressed. The facial paralysis can follow immediately the trauma due to direct damage to the facial nerve, in such cases a surgical treatment may be attempted.
Cell morphology observed in all nerve root schwannomas. Trigeminal schwannoma is a condition in which a tumor forms on the trigeminal nerve (also known as cranial nerve five). [1] This prevents sensation in the area associated with the nerve. In the case of the trigeminal nerve, this is the face, meaning hypoesthesia of the face is experienced.
The symptoms of nerve injury in the early 1900s were called nerve palsy (today neuropathy or neuritis are more common terms). [50] The concept of injuries causing nerve palsy was understood at that time. [49] For example, wrist fractures were known to be a cause of nerve palsy through compression, and this could be treated by liberating the nerve.