Sciver-Brunt first injured her calf on 29 April, suffering what was then described by England as a “minor” tear when playing in domestic cricket.
She subsequently sat out series against New Zealand and India at the start of the international summer before returning for England’s World Cup warm-up matches.
The England captain came through warm-ups against Australia and India and the first match of the World Cup against Sri Lanka but reported ‘tightness’ in a win over Ireland 10 days ago.
She has not played since and England will either play their semi-final on Tuesday or Thursday next week, depending on other results.
“The one thing you need is time,” Worth said.
“You need time to allow the muscle to repair and then strengthen in the right way. Those timelines are tight, particularly given a history of previous injuries in the same area, but not impossible.”
Calf injuries are a regular issue for cricketers. England’s leading wicket-taker James Anderson had calf problems in the latter part of his career.
Worth said this is because of issues specific to cricket, like batters having to sprint from a standing start or bowlers slamming their front foot into the crease in their delivery stride, and the make-up of the muscle.
“You have two different types of tissue that come together,” he said. “You have your calf which is the upper bit and then the Achilles tendon.
“Wherever there are two types of tissue in terms of composition, that is often where there is a weak point.
“Things like taking a run, going from 0 to 100mph, are really difficult to replicate in rehabilitation.
“You have the immediate calming down on inflammation but tendons like load and need to strengthen.
“It is very difficult to get the balance between working the muscle enough and not pushing it too far.
“Quite often calf injuries are tricky because you feel like you have done the work and you put them back onto the field in a match situation and something goes again.”
