Country singer Loretta Lynn is to undergo surgery after she fell at her home on Sunday and broke her shoulder.
Lynn had to cancel two shows last year after a back injury
Lynn, 71, will have shoulder joint replacement surgery at a Nashville hospital on Thursday, her spokesman William Smithson said in a statement.
The accident has forced the singer to cancel nine concerts in June and July.
The Grammy winner best-known hits are Don't Come Home A Drinkin' (With Lovin' On Your Mind) and the autobiographical Coal Miner's Daughter.
Lynn's cancelled concerts include dates in Missouri, Ohio, Michigan, Tennessee, Oklahoma and Texas.
Re-scheduled dates are expected to be announced shortly.
Lynn was forced to cancel two concerts in Oklahoma and Texas last year because of pain from a back injury.
The country star grew up in Kentucky, before marrying at 14 and moving to Washington.
With her husband's encouragement, Lynn pursued a music career and her songs about the lives of working-class women struck a chord.
Sissy Spacek won the best actress Academy Award for her portrayal of Lynn in the 1980 film Coal Miner's Daughter.
Lynn's latest album, Van Lear Rose, was produced by White Stripes frontman Jack White, and includes the pair duetting on the track Portland Oregon.