No evidence has been found to suggest 83-year-old Olive Jagger's injury was due to poor care.

But Calderdale Council's head of social care, Phil Shire, said: "The investigation report produced by former manager Heather McGrath was inadequate and of poor quality."

Claire Jagger, of Turner Avenue North, Illingworth, Halifax, made a formal complaint after her grandmother suffered a broken femur last summer at Brackenbed View Nursing Home, Pellon Lane, Halifax.

She was told by the home the injury might have been caused when Mrs Jagger was "bumped" while being hoisted in a sling.

"It was such a vague explanation and I wanted someone to accept responsibility for what had happened," said Miss Jagger.

"I hoped that by making a complaint it would improve the care others receive."

Council investigating officer Stuart Green said the night nurse recorded Mrs Jagger's injury as "unexplained."

The home went on to produce an undated report that did not say how the injury happened.

Mr Green said: "The report was deficient in a number of areas and no reference was made to the outcome, the action taken or recommendations.

"The absence of a satisfactory explanation reinforced the view that there was a failure by staff at Brackenbed View to accept responsibility."

The council has now asked the home to give Miss Jagger a copy of the report, along with an apology.

Miss Jagger said she felt let down by the people caring for her grandmother, who died in November.

A spokesmann for Four Seasons Homes, which owns Brackenbed View, said: "The vigilance of our staff identified Mrs Jagger's injury and ensured she received prompt medical attention.

"We believe the home acted appropriately. The issue was fully investigated, both internally and by external authorities.

"Mrs Jagger's next of kin was aware of the situation.

"Due to Mrs Jagger's frail condition it was not possible to ascertain the cause of the hairline fracture."