Richard Rose, the Hereford United defender, will miss Saturday's FA Cup game against Hartlepool and is expected to miss several future matches.
Rose came off during the first half of last Saturday's League Two match against Accrington.
"It was first feared after an x-ray that he had cracked a bone in his ankle but when he has been up again they are not sure about it," manager Graham Turner told BBC Hereford and Worcester.
"So they put him in a semi-cast.
"He'll go back in ten days time and that will be removed and we will see what he is like after that."
Trent McClenahan is likely to take the place of Rose at right back.
Turner also spoke about two other players recently injured.
"Luke Webb could be fit and Karl Broadhurst is making good progress but probably won't be fit for this weekend but certainly next week he should be joining in."
Text at top (next game etc)
Next Game: Scarborough In The League At Edgar Street On Tuesday 19th November At 7.45pm