undergo physiotherapy
physiotherapy 是不可数名词，不能用 a physiotherapy。
After the knee injury, she had to undergo physiotherapy for three months.
膝盖受伤后，她不得不接受三个月的物理治疗。
物理疗法；理疗
理疗；[医] 物理治疗
therapy that uses physical agents such as exercise, massage, and other modalities
物理疗法
therapy that uses physical agents: exercise and massage and other modalities
After his knee surgery, the doctor recommended physiotherapy to help him regain strength.
膝盖手术后，医生建议他做理疗来恢复力气。
用法提示：此处“physiotherapy”是名词，表示“物理疗法、理疗”，作 recommended 的宾语。
She has been attending physiotherapy twice a week since her back injury.
自从背部受伤以来，她每周去做两次理疗。
用法提示：句中“physiotherapy”为名词，指“理疗”这一治疗方式，作 attending 的宾语。
The clinic offers physiotherapy for people recovering from sports injuries.
这家诊所提供针对运动损伤康复的理疗服务。
用法提示：这里“physiotherapy”是名词，表示“物理疗法”，作 offers 的宾语。
physiotherapy 是不可数名词，不能用 a physiotherapy。
After the knee injury, she had to undergo physiotherapy for three months.
膝盖受伤后，她不得不接受三个月的物理治疗。
refer sb for sth 表示“安排某人接受某种治疗”。
The doctor referred him for physiotherapy to help with his back pain.
医生让他转诊接受物理治疗，以缓解背痛。
course 在这里指“疗程”，是可数名词。
A course of physiotherapy helped her recover her shoulder mobility.
一个疗程的物理治疗帮助她恢复了肩部的活动能力。
美式英语的正式说法，与 physiotherapy 完全同义；在美式语境中可互换。
常用于英式口语，语气较随意；不可数名词指理疗，可数名词指理疗师。
grammar · medium
易错句子I had a physiotherapy last week.
正确表达I had physiotherapy last week.
physiotherapy 是不可数名词，不能直接加不定冠词 a；表示一次治疗可说 a session of physiotherapy 或 a physiotherapy session。去掉 a 即可。
grammar · medium
易错句子The physiotherapy said I should rest my ankle.
正确表达The physiotherapist said I should rest my ankle.
physiotherapy 指“理疗（疗法）”，不是人；表示“理疗师”要用 physiotherapist。这里主语应为“人”，所以用 physiotherapist。
grammar · medium
易错句子I took physiotherapy for my shoulder injury.
正确表达I had physiotherapy for my shoulder injury.
表示“接受理疗”时，动词常用 have、receive 或 undergo，不直接用 take；take 多用于 take medicine（服药）。此处应把 took 改为 had。
physiotherapy 是单个名词，physical therapy 是 physical + therapy 构成的短语，二者语义相同；句法上，作主语/宾语时两者皆可，但若需形容词修饰（如 physical therapy sessions）只能用短语形式。
physiotherapist 指提供理疗的人；physiotherapy 指疗法本身。选择时看主语/宾语是‘人’还是‘治疗过程’。
psychotherapy 与 physiotherapy 都含 therapy，但前者是‘心理治疗’，针对心理或情绪问题；后者是‘物理治疗/理疗’，针对身体功能恢复。两者不是同一疗法，不可混用。
接受理疗
After the accident, she had to undergo physiotherapy for six months.
事故后，她不得不接受六个月的理疗。
理疗疗程
Each physiotherapy session lasts about forty minutes.
每次理疗疗程大约持续四十分钟。
物理治疗
The doctor recommended physiotherapy treatment for his back injury.
医生建议他的背部损伤接受物理治疗。
理疗锻炼
She does the physiotherapy exercises every morning to strengthen her knee.
她每天早上做理疗锻炼以增强膝盖力量。
理疗诊所
The physiotherapy clinic is open from Monday to Saturday.
理疗诊所周一至周六开放。
physio-（身体的，物理的）+ therapy（治疗）；同根词：physical、physiology、therapist
理疗是康复治疗的一种重要手段。
按摩是理疗中常用的一种物理疗法。
理疗常通过特定锻炼帮助恢复功能。
理疗旨在改善患者的身体活动能力。
理疗的目标是促进伤病后的恢复过程。
Dictionary facts from ECDICT, WIKTIONARY.