Our series demonstrated the excellent outcome of THA for patients with chronic autoimmune arthropathies at the time of follow-up. Careful patient selection remains a priority as long-term outcomes for such patients of a significantly younger population is yet to be determined.

purpose. To review 28 cases of paediatric triplane fractures of the distal tibia over a 7-year period in a tertiary paediatric hospital. Methods. Records of 21 boys and 7 girls aged 11 to 15 (mean, 13) years presented with triplane fractures of the left (n=14) and right (n=14) ankles were retrospectively reviewed. results. Injury mechanism included low-energy trauma (n=10) and moderate-energy trauma (n=18). Fractures were 2-part in 20 patients, 3-part in 6, and 4-part in 2. 11 patients had concomitant fibular fractures. Articular displacement was <2 mm in 17 patients and ≥2 mm in 11 patients. 17 patients were treated conservatively (cast immobilisation); 11 were treated surgically by closed reduction and percutaneous pinning (n=1), open reduction and percutaneous pinning (n=5), closed reduction and internal fixation (n=3), or open reduction and internal fixation (n=2). Transepiphyseal partially threaded cannulated screws were used for fixation. The mean period of casting was 5.8 weeks, and the mean nonweight bearing period was 6.1 weeks. The mean follow-up period was 14.2 (range, 9-20) weeks. All patients had excellent outcome. No patient had any infections, delayed or non-union. Six patients had decreased range of motion and 4 had pain 4 weeks after cast removal. conclusion. Treatment outcome of triplane fractures of the distal tibia in children is good when guidelines are closely adhered to.

Crohn's disease (CD) is rare in the Chinese population, but lately there seems to be an increasing trend of CD in the Singapore Chinese population. We carried out a retrospective study of all Chinese patients with CD seen from 1987 to 1993 at the Singapore General Hospital. All patients were regularly followed up and treated. Disease activity was defined by the Organisation Mondiale de Gastroenterologie index. We also compared our series with our first series reported in 1987 and a Western series. There were 32 patients (20 men, 12 women) giving a hospital prevalence of 26.7 per 100,000 patients compared with 3.5 per 100,000 patients in 1986. The mean age was 37.1 years (range, 19-80 years). Twelve patients had small intestinal disease, 9 had colonic disease, and 11 had both. The common presenting symptoms were bloody diarrhea (67%), abdominal pain (53%), loss of weight (47%), and fever (34%). Extraintestinal manifestations were rare. Six patients had no relapse during the follow-up period, whereas the remaining 26 patients had an average of two relapses (range, 1-5). These relapses were complicated by fistulas in 8 patients and strictures in 11 patients. Response to steroids and sulfasalazine was good in most patients. Four patients required repeated surgery despite medical treatment. The prevalence of CD appears to be increasing among the Singapore Chinese population. The clinical features are similar to those of the Western population. Most of our patients responded to standard medical therapy, but further follow-up is needed to assess their long-term clinical outcome.

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