Hinata Hyuga suffered a serious injury during a semi-final match against her cousin Neiji in theChunin exam

Despite receiving treatment, Neji's injury flared up again as she watched the final against Naruto

 To her surprise, only Yakushi Kabuto, her right-hand man of her Orochimaru, gave her her first aid.

Kabuto had no reason to intervene in a timely manner.Hyuga Hinata is seriously

injured in the semifinal match against her cousin Neiji in the master test. Despite receiving her treatment,

her injury flared up again as she watched Neji's final against Naruto. To her surprise, only Yakushi Kabuto,

her right-hand man of her Orochimaru, gave her her first aid. Kabuto had no reason to intervene in a timely manner.

Although not on the level of Tsunadenim, Kabuto was a skilled medical ninja. Before entering Orochimaru's employment, 

he receives medical ninjutsu training from an elite spy for his adoptive mother Konohagakure