The Belgian, who fractured the joint in an accident competing in the Belgian Championship last weekend, decided to wait until his left limb was healed before opting for another procedure to fully-fix the right shoulder he dislocated two months ago which will need a three-week stint of convalescence.The fresh injury disruption for the Belgian team means that only Kevin Strijbos (pictured) is 100% confirmed to face the British Grand Prix this weekend at Matterley Basin for what will be the 13th round of 15 in the FIM Motocross World Championship.Kiwi Cody Cooper has been lined-up to replace Desalle and is set to steer the works RM-Z450 in both Germany and Italy for the final meetings of the season in September.Strijbos recorded third position overall at the Balen-Mol meeting where Desalle crashed and will take the factory RM-Z450 to the gate at the scenic circuit next to the town of Winchester, south east of London. Matterley Basin was inaugurated as a Grand Prix venue in 2006; the same year that it welcomed a record crowd for the Motocross of Nations.The local organisers, together with Championship promoters Youthstream, have worked hard to bring the competition back to the natural bowl setting with a fast, flowing and spectacular track. Strijbos has previous experience of Matterley from ’06 where he finished second overall to Stefan Everts and also ran out for his country.Kevin Strijbos says: “It was a pretty good meeting for me at Balen but it was too bad that Clement had his accident. It means I am the only one riding for the team this weekend so I hope to do well.”Strijbos has been selected for the 2011 Belgian Motocross of Nations team; the first time he will pull on the national colours since 2006. Desalle was due to be part of the line-up until his poor luck again in the domestic series.Kevin Strijbos says: “Matterley is a nice track with a big layout. It doesn’t feel like there are any sharp turns and you can really attack it. It feels good,” he added concerning his Nations berth. “Again it is a shame for Clement that he will not be there but I am looking forward to the race…even if St Jean is not my favourite track.”The early weather forecast for the weekend is typically British with a day of sunshine on Saturday to be replaced by grey clouds and rainfall on Sunday.