reinjury       
noun [ C or U ] (also re-injury) uk/ˌriːˈɪn.dʒər.i/ us/ˌriːˈɪn.dʒər.i/
 再受伤
the act of causing physical harm again to a person or animal who has had an injury
  She wore a brace on her knee to prevent reinjury.
 The doctor said that I would have to stop work because of the risk of re-injury. 
She feared that playing in the tournament might cause a re-injury. 她担心参加锦标赛可能会导致再次受伤。 
  - More examples
 - The injured muscle never fully recovered and was always susceptible to reinjury.
 - Doing gentle exercises will strengthen the damaged area and prevent re-injury.