Welsh cyclist Nicole Cooke broke her collarbone in qualifying for the points race on the opening night of the Manchester leg of the World Cup.
UCI Track World Cup
Manchester, Dec 9-11
Coverage on BBC Sport:
Saturday, BBC One, 1305
Sunday, BBC Two, 1415
Cooke was taken to hospital where X-rays confirmed two hairline fractures to her left collarbone.
But the injury will not prevent the defending Commonwealth road race champion from defending her title.
Chris Hoy, who pipped Jason Queally, Victoria Pendleton and Paul Mannning all won golds on the first night.
Hoy and Queally, successive Olympic champions in the kilometre, are also likely to be on the podium at the Commonweath Games in Melbourne.
But it is Hoy who is on track to defend the title he won for Scotland in 2002, finishing 0.236 seconds quicker than Queally, who tops the World Cup standings after winning the Moscow leg.
The Scot is the only man to produce a sub 62-second ride this season but he played down the significance of his latest success.
"I'm sure Jason would be happy with a consistent ride," said Hoy.
"It's really about your own ride at the end of the day. It's just you against the clock."
Cooke, expected to announce she will compete for a Swiss-based team co-sponsored by the German bike manufacturer Univega and their UK distributors Raleigh next season, fell heavily after bumping elbows with a Canadian rider.
Both riders came down, Cooke landing heavily on her shoulder as she hit the track.
The other British rider entered in the event, Scot Kate Cullen, also fell in her heat but she was not seriously injured.
Meanwhile, Pendleton demonstrated how far she has matured as a cyclist since a disappointing Olympics in which she failed to make it past qualifying with victory.
She had to come through a difficult quarter-final which saw her paired with the Australian Anna Meares, world record holder and Olympic champion in the 500m time-trial.
Meares looked to have a tactical edge over Pendleton as she won the first of the best of three tie but the Briton won the next two, both of them leading from the front.
Her semi-final against Lithuania's Simona Krupeckaite was more straightforward before a final against the formidable Natallia Tsylinskaya of Belarus, a multiple world champion and the event's standard bearer.
Pendleton more than matched her for power in the first race and, when Tsylinskaya tried to cut inside her at the start of the final lap in the second, she strayed out of bounds and was disqualified.
Team pursuit world champion Mannning won gold in the individual event, the Great Britain rider competing in the colours of recycling.co.uk to become the first rider to win a World Cup medal for a trade team.
Manning produced a smooth but controlled ride in the final against Volodomyr Dyudya, allowing the Ukrainian's lead to nudge over the two-second mark before reeling him in and finishing a comfortable 0.835secs ahead.