posterior region of knee

例句：

1. 1. Thepatient was diagnosed with a condition affecting the posterior region of his knee.
   患者被诊断出患有影响其膝盖后部的病症。
2. 2.During physical therapy, it is important to focus on strengthening the posterior region of the knee.
   在物理治疗期间，重点应放在加强膝盖后部肌肉上。
3. 3.The doctor advised the patient to avoid activities that could strain the posterior region of his knee.
   医生建议患者避免可能导致膝盖后部受伤的活动。