Amitabh Bachchan surprised viewers of Kaun Banega Crorepati Season 18 (KBC 18) when he began the latest episode seated rather than delivering his customary opening monologue while standing at the centre of the stage.

The veteran actor subsequently explained the reason for the change, revealing that he had slipped and fallen during the previous day's shoot, injuring his knee.

Bachchan pointed towards his left knee while speaking about the incident and explained that he was finding it somewhat difficult to stand.

Despite the injury, Bachchan continued hosting the programme.

The actor told the audience that the injury was not a major one and reassured them about his condition. Although he began the episode sitting down because of the discomfort, he continued interacting with contestants during the show.

His decision to address the incident himself also clarified why his usual energetic opening was different in the episode.

According to Bachchan's account, the incident happened while he was shooting the previous episode of KBC 18.

He slipped while on the set and fell, resulting in the knee injury. The incident was subsequently mentioned by the actor at the beginning of the next episode.

Reports said Bachchan's opening monologue was delivered while seated, rather than from his customary position in the centre of the KBC stage.

There has been no report in the available coverage of a major medical complication or hospitalisation following the incident. Bachchan himself described the injury as not serious.

The knee injury did not prevent Bachchan from continuing with his hosting duties.

Kaun Banega Crorepati, commonly known as KBC, remains one of Indian television's best-known quiz shows, with Bachchan having become closely associated with the programme over multiple seasons.

His latest injury comes as he continues working at the age of 83, with the actor currently hosting the show's 18th season.

The episode also continued with contestant Shourjya Das, who progressed through the game and reached the ₹50 lakh question before choosing to walk away with ₹25 lakh, according to NDTV's report.

Bachchan's unexpected seated appearance immediately drew attention because his opening KBC routine normally involves him standing at the centre of the stage.

The actor's explanation helped put the audience at ease, particularly after he indicated that the injury was not severe.

While reports have described the injury as a knee injury and Bachchan himself identified his left knee, detailed medical information about the injury has not been publicly disclosed.

For now, the actor has continued with his television commitments while managing the discomfort.

The incident has attracted attention because of Bachchan's long-standing association with Kaun Banega Crorepati and his characteristic opening routine.

However, based on his own comments and current reports, the incident appears to have resulted in a knee injury that temporarily affected his ability to stand comfortably, rather than forcing him to stop hosting the programme.

Further details about his recovery or any medical treatment have not been publicly reported.