深圳一名近三十岁的患者在车祸中遭受颅脑损伤，导致左侧肢体运动功能障碍、吞咽功能障碍、言语功能障碍及认知功能障碍1。受伤后，患者的左臂长期保持"屈肘抱胸握拳"的异常姿势，由于左上肢肌张力过高而无法正常活动1。
为改善这一状况，深圳恒生医院康复医学科对患者采取了A型肉毒毒素注射治疗1。医生在超声精准定位下针对患者左上肢屈肌肌群进行注射1。注射后6天，患者左上肢屈肌已明显放松，异常姿势得到显著改善1。A型肉毒毒素注射通常在3至7天后开始起效，2至4周效果达到高峰，单次注射的疗效一般可维持3至6个月1。
医生提醒，肉毒毒素注射治疗需要与系统康复训练相结合，才能更好地帮助患者恢复功能1。
A man in his late twenties from Shenzhen, who formerly served in the military before becoming an auxiliary police officer, sustained severe traumatic brain injury in a motor vehicle accident 1. The injury resulted in multiple functional impairments, including loss of motor function on his left side, difficulty swallowing, speech difficulties, and cognitive impairment 1. Due to these effects, the patient developed significantly elevated muscle tone that left his left arm locked in an abnormal posture—elbow bent, arm pulled to the chest with a closed fist 1.
Following medical evaluation at Shenzhen Hengshen Hospital's Department of Rehabilitation Medicine, the treating physician recommended treatment with Type A botulinum toxin injections. Under ultrasound guidance, the medical team precisely administered injections to the flexor muscle groups of the patient's left upper limb 1. Within six days of the procedure, the muscle tension in the patient's left upper arm had noticeably relaxed, successfully correcting the abnormal posture and creating conditions for continued rehabilitation training 1. According to clinical data, Type A botulinum toxin typically begins to take effect between three to seven days after injection, with peak efficacy achieved within two to four weeks, and effects generally sustained for three to six months with each treatment cycle 1. Medical professionals emphasize that botulinum toxin injection must be combined with systematic rehabilitation training to achieve optimal outcomes 1.
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