British cyclist Mark Cavendish was assaulted by four armed men during a burglary at his home on 27 November.
Cavendish, 36, said he, his wife Peta and their children were threatened "at knifepoint" by the men and he was "violently attacked".
The Manx rider was suffering from two broken ribs and a collapsed lung sustained in a crash on 21 November.
Essex Police said none of the family sustained serious injuries but were "incredibly shaken" by the incident.
They added the group stole a Louis Vuitton suitcase and two "high-value" watches and that no arrests had yet been made.