BBC Sport rounds up the casualties as the 2004 Six Nations championship prepares for kick-off.

While England, Ireland, France and Italy are feeling the effects of their World Cup efforts, Scotland and Wales are at virtually full strength ahead of this season's campaign.

Jonny Wilkinson
England's star turn will undergo surgery on his shoulder on Wednesday and will miss the whole of the Six Nations.
Likely return: 0%

Mike Tindall
The impressive Bath centre may make it back for the latter stages of the tournament after damaging his ankle ligaments.
Likely return: 10%

Julian White
The Leicester tighthead is on crutches after knee surgery which will keep him out of the entire Six Nations campaign.
Likely return: 0%

Lewis Moody
Moody is recovering from a stress fracture of the foot and is not expected to return until early March, ruling him out of England's opening two matches at least.
Likely return: 50%

Mike Catt
Catt has not played since the week after the World Cup final with a recurring hamstring problem, although hopes to return in the coming weeks.
Likely return: 30%

Stuart Abbott
The South African-born centre aggravated his ankle in his second match back from the same injury against Calvisano and will miss England's first two games.
Likely return: 75%

Charlie Hodgson
The Sale star is still waiting to see whether he will need surgery after suffering a knee injury in a Heineken Cup match. Out of the first two matches at least.
Likely return: 20%

Steve Thompson
The Northampton hooker had to be helped off the field after suffering a sprained ankle against Llanelli and faces a race to be fit for the opening match in Italy.
Likely return: 80%

Matt Dawson
The Saints scrum-half made his return from calf and shoulder injuries in Saints' win over Rotherham, meaning he should be in contention to face Italy.
Likely return: 90%

Fabien Pelous
New France captain Fabien Pelous is winning his race to be fit for the opening clash against Ireland, after twisting a knee on club duty on 3 January.
Likely return: 100%

Olivier Brouzet
Brouzet hopes to return in early March after dislocating his right shoulder in France's World Cup quarter-final win over Ireland, but will miss the opening games.
Likely return: 50%

David Auradou
The Stade Francais lock has missed a number of club matches with a calf injury he picked up against Ulster, though he looks set to make a quick return.
Likely return: 100%

Jerome Thion
France's very-own 'Robocop' is suffering from an Achilles tendon injury that will rule him out for six months.
Likely return: 0%

Tony Marsh
The man who beat testicular cancer to play at the World Cup is still suffering with an Achilles injury, and will miss the opening matches.
Likely return: 80%

Brian O'Driscoll
Ireland captain Brian O'Driscoll is suffering a hamstring injury and remains a huge doubt for the opening Six Nations clash against France.
Likely return: 100%

Geordan Murphy
Leicester Tigers full-back Geordan Murphy is ahead of schedule in his recovery from a broken leg and hopes to back by the end of February.
Likely return: 20%

Alan Quinlan
Munster flanker Alan Quinlan suffered a dislocated shoulder while scoring against Argentina in the World Cup.
Likely return: 60%

Denis Hickie
Ireland regular Denis Hickie will miss the entire campaign after becoming another victim of an Achilles injury.
Likely return: 0%

Alessandro Troncon
The Italian live-wire scrum-half has undergone extensive knee surgery but hopes to make it back onto the international field before the championship is out.
Likely return: 55%

Mauro Bergamasco
Italy's inspirational flanker has undergone a shoulder reconstruction which will rule him out of the opening matches.
Likely return: 60%

Gonzalo Canale
The Treviso full-back has been ruled out of the Six Nations opener against England after suffering a thigh injury against Gloucester.
Likely return 90%

A new Scottish line-up will hope to build on Edinburgh's impressive Heineken Cup campaign and have no major injury worries as they prepare for their opening clash against Wales.

Kevin Morgan
The injury-prone full-back suffered another setback when he tripped on his shoelace during indoor training. Morgan had only just returned from six months out with a knee injury.
Likely return: 50%

Mark Jones
The Welsh flyer has undergone knee surgery and is likely to miss the start of the Six Nations.
Likely return: 50%