Why can't Draper play & why won't surgery help?

Why can't Draper play & why won't surgery help?ByJonathan JurejkoBBC Sport tennis news reporterPublished5 minutes agoBy his own admission, the arm injury which has derailed Jack Draper's career is "complicated".Former British number one Draper withdrew from a planned comeback in Washington on Monday after feeling more discomfort from bone bruising in his serving arm.It is a similar situation to what happened at Wimbledon last month, where the 24-year-old Englishman also spoke positively about his fitness - and seemingly practised well - before pulling out on the eve of the tournament.Draper continues to insist "finding acceptance and being patient" remains the key - but his fans can be forgiven for fearing the worst.So what is bone bruising in the arm, how does it affect tennis players and would surgery solve Draper's long-standing issue?Get in touchSend us your questionsContact formContact formWhat is bone bruising and why do tennis players suffer?Image source, Getty ImagesImage caption, Jack Draper reached the Eastbourne semi-finals on his comeback in mid-June, but has not been fit enough to play sinceDraper has been hampered by the bone bruising in his left arm for more than a year, playing just 14 matches in the past 12 months and missing all three Grand Slam tournaments so far this year.He has dropped to the cusp of the world's top 150 as a result and will need to come through qualifying - or be given a wildcard - to play at the upcoming US Open, which starts on 30 August. Bone bruising is essentially internal bleeding in the centre of the humerus bone, according to Prof Amar Rangan, vice-president of the British Orthopaedic Association.The humerus is the long, tube-like bone between the shoulder and elbow joints, with the stronger outer layer - known as the cortical bone - protecting a spongier tissue called trabecular bone.When the trabeculae break, the bleeding increases pressure inside the bone - causing brui...