This is the 3712th most frequent Turkish word.
yaralıların
"Of the injured" or "belonging to the injured."
Here, "yaralıların" refers to 'of the injured people', showing possession in plural form in the genitive case.
Yaralıların tedavisi hastanede yapılıyor.
The treatment of the injured is being done in the hospital.
In this sentence, "yaralıların" again means 'of the injured people', used to show possession of needs in a general statement.
Yaralıların ihtiyaçları karşılanıyor.
The needs of the injured are being met.
Here, "yaralıların" indicates 'of the injured', specifically their 'condition', which is described as critical.