理解的对吗？

A thorough history and physical exam are the cornerstone in any clinician’s armamentarium for the appropriate diagnosis and treatment of the patient. To develop the best differential diagnosis, one must be aware of correlative signs and symptoms. A key component in the initial evaluation of radicular pain is to rule out serious pathology and non- musculoskeletal diseases as a cause of pain and associated symptoms. Some symptoms that warrant further evaluation would include age less than 20 years old, history of trauma, presence of constitutional symptoms (i.e., fever, chills, weight loss, etc.), history of cancer, recent bacteremia, immunosuppression, unrelenting pain, or presence of cauda equina syndrome [49–51]. A comprehensive physical examination is necessary to aid in determining distributions of symptoms and identify all possible generators of pain. In the diagnosis of a radiculopathy, there is significant clinical utility in understanding the structures in the nervous system responsible for observed sensory deficits over a given area of the skin.Unfortunately, there has been a lack of consensus with regard to the precise localization of specific dermatomes. This variability among dermatomal maps arises from a number of difficulties encountered when attempting to create an accurate representation. Similar to a dermatome, the term myotome is used to describe all of the muscles that receive innervation from a single spinal segment or spinal nerve. Significant overlap in myotomes occurs in a similar fashion to dermatomes. Nearly every muscle receives motor nerve fibers from more than one spinal level [52]. Although many muscles have a dominant innervating nerve root, multiple spinal levels likely contribute to the complete innervation. Similar to dermatomes, there is some disagreement and overlap among varying sources with regard to the spinal levels responsible for the innervation of particular muscles. Despite the challenges present in dermatomal and myotomal mapping, they are very useful in the evaluation and diagnosis of radiculopathy.

全面的病史询问和体检是医生对患者做出恰当诊断和治疗的基础。为了制定最佳的鉴别诊断，必须了解相关的体征和症状。初步评估神经根痛的关键组成部分是需要排除以疼痛和相关症状为表现的严重病变或非肌肉骨骼疾病。若患者年龄小于20岁、有创伤史、有全身症状(即发热、发冷、体重减轻等)、癌症史、近期菌血症、免疫抑制、持续疼痛或马尾综合征则需要进一步评估[49–51]。全面的身体检查是必要的，以帮助确定症状的分布，并确定所有可能的致痛因素。在神经根病的诊断中，了解神经系统的结构对观察到特定皮肤区域的感觉缺陷有重要的临床价值。不幸的是，对特定皮节的精确定位一直缺乏共识。皮节分布图的这种变异性源于在试图创建准确的表示时遇到了许多困难。与皮节相似，肌节是用来描述单一脊髓节段或脊神经支配的所有肌肉。与皮节一样，肌节也存在显著重叠。几乎每块肌肉都接收多个脊髓节段的运动神经纤维支配[52]。虽然许多肌肉有主要的支配神经根，但完全的神经支配可能源自多节段神经支配。，与皮节相似，不同的来源的神经对特定肌肉的支配有有差异和重叠。尽管对皮节和肌节的测试存在困难，但它们对神经根病的评估和诊断非常有用。

Although many muscles have a dominant innervating nerve root, multiple spinal levels likely contribute to the complete innervation.

1虽然许多肌肉有主要的支配神经根，但完全的神经支配可能源自多节段神经支配。

2虽然许多肌肉有主要的支配神经根，但多节段神经支配可能构成了完全的神经支配。

理解的对吗？