SPECIAL court procedures designed to protect mentally handicapped people involved in sensitive cases have yet to be adopted by the judiciary. Mr Justice Wong recommended dropping many of the formal trappings of court after the collapse of a rape trial in September in which a mentally handicapped girl became distressed under cross-examination. However, virtually none of the 17 recommendations made in Mr Justice Wong's final report on the case were used at a hearing last week in which a teacher admitted sexually abusing a mentally retarded pupil. It was the first case in which Mr Justice Wong'sproposals could have been applied. Some of them, such as taking evidence via television link or video-taped recordings, require a change in the law before they can be implemented; others were to be introduced immediately. Those in the latter category include judge and counsel not wearing wigs and gowns; a social worker being allowed to accompany a mentally retarded witness; the relaxation of proceedings such as those occurring in juvenile court; the use of Cantonese during the trial; and cases involving the mentally handicapped being brought forward in time to aid recall. But virtually none of these measures were adopted, disappointing members of the Parents Association of Pre-School Handicapped Children, who attended last week's hearing. The association's chairwoman, Julie Lee, said: ''We were greatly encouraged by our meeting with Mr Justice Wong last December, and to hear that some of the recommendations could be implemented at once. But this has not been the case, except for one - thetrial did jump the queue. It moved up from September to March 28. ''But it was done only because the association mentioned this case to him at our last meeting,'' she said. Ms Lee criticised the judiciary for having no clear guidelines on how and when the recommendations should be implemented. ''They [the judiciary] have no idea when and how to put the proposals into practice.'' More cases involving mentally handicapped witnesses are due to come to trial this month and next, and the association hopes the judiciary will address the problem. ''We are drafting a letter to Chief Justice Sir Ti Liang Yang to urge the implementation of the 17 recommendations and the setting up of a time scale as soon as possible. I hope we receive a positive response,'' she said. The Sunday Morning Post tried to contact Sir Ti Liang, but he was away on leave. Ms Lee also claimed that parents were stopping their children from attending special schools and workshops because of fears they were not safe. The association had noted a drop in attendances at the centres following the assault on the girl by her teacher, Ms Lee said. ''We all hope our children can live a normal life as others do, but if it is so dangerous for them to go out, it is better we keep them home. We don't want them to get hurt,'' Ms Lee said. In another rape case, a man walked into Princess Margaret Hospital and abducted a girl. The incidents have highlighted the problems of protecting vulnerable children while in Education Department and Department of Health care, and now the association wants a series of measures to rebuild parental trust in the services. It wants schools to introduce sex education for the mentally handicapped and crisis centres to help parents and children deal with the aftermath of such assaults.