All the operations were carried out in accordance with well established methods and by experienced surgeons. The sufferers were examined on many occasions over 2 yrs and gave their very own opinions of the position of the injured knee. Related StoriesFirst hospital installs Ortho Vision AnalyzerGlan Clwyd Medical center N Wales spend money on Esaote's G-Scan MRI unit for weight-bearing scanningPatients offered animal-assisted therapy at UCLA Health There are almost 10 000 scientific publications addressing the ACL and 50 per cent of these are about medical procedures.As the study can’t definitively show a cause-and-effect relationship, the researchers found that a 100 % smoke-free environment seemed to lower the odds of young people taking on smoking by one-third. The number of new smokers through the study period dropped significantly, and the number of nonsmokers exposure to harmful secondhand smoke cigarettes also went down, the researchers reported. During the study period, the number of people protected by smoking bans at work, restaurants and bars increased. Young people surviving in areas where smoking cigarettes bans were enforced in bars were 20 % less likely to start smoking.