Comparison of Subchondral Fracture on Radiographs with MR Images in Evaluation of Osteonecrosis in LCP Patients

PURPOSE: To compare the subchondral fracture on plain radiography and MR image as a method for assessing osteonecrosis in Legg-Calve-Perthes(LCP) pateients. MATERIALS AND METHODS: We retrospetively reviewed 15 hip joint MR images and plain radiography which visualized subchondral fracture. With basis of the Salter-Thompson classification, extent of necrosis was graded group A to B, as follows; Group A= 50%. On PACS workstation, necrotic area of each MR image was measured to calculate the volume of necrotic portion: volume = necrotic area x slice thickness. Necrotic areas on MR images were graded group A to B and results were compared with that measured in Salter-Thompson classification. On follow up, bone resorption was measured and the extent was compared with subchondral fracture representing necrotic area and that on MR volume method respectively. RESULTS: In 9 joints of 15 hip joints (60%), the degree of necrosis in Salter-Thompson classification on plain radiographs was different from that on MR volume method. Based on plain radiographs by Salter-Thompson classification, the degree of necrosis was overestimated in 6 (67%) joints, and underestimated in 3(33%) joints compared with MR volume method. On follow up study, bone resorption was not correlated with necrotic extent of subchondral fracture and MR volume method. CONCLUSION: The extent of femoral head necrosis measured by subchondral fracture was different from that measured by MR and was not correlated with bone resorption on follow up. Therefore, usefulness of subchondral fracture as a prognostic factor may be limited.

Lipid Profiles in Patient with Ketogenic Diet for Intractable Childhood Epilepsy / 대한간질학회지

PURPOSE: Ketogenic diet has been frequently used in the treatment of intractable childhood epilepsy since proven strong antiepileptic effects. Because of prolonged maintenance of high fat diet, long-term side effects of hyperlipidemia and atherosclerosis has been concerned, but there are no sufficient data revealing lipid profile from ketogenic diet. This study is intended to investigate the changes of lipid profiles in patients with ketogenic diet. METHODS: Sixty-six children (0.8-14.7 yrs, mean age 4.6+/-3.6 yrs, 33 males and 33 females) with intractable epilepsy treated with the classic (4:1) ketogenic diet were studied at Inje University Sang-gye Paik Hospital, from January 1997 to July 2001. Follow-up period was more than 1year (range:1-2 yrs). Cholesterol, HDL-cholesterol and Triglyceride (TG) concentrations were measured at 1 day, 7 days, 6 months, 12 months, 18 months and 24 months, and LDL-cholesterol concentrations were measured. RESULTS: 1) Total cholesterol concentrations were significantly increased from 7 days to 24 months after ketogenic diet than that before ketogenic diet (p<0.05). 2) HDL-cholesterol concentrations were not significantly changed for 2 years. 3) LDL-cholesterol concentrations were significantly increased at 6 months (119.9 mg/dL, p<0.05), and 24 months (128.0 mg/dL, p<0.05). 4) TG concentrations were significantly increased at 7 days (164.9 mg/dL, p<0.05), 6 months (209.7 mg/dL, p<0.01), and 12 months (192.0 mg/dL, p<0.01), and were normalized at 18 months, 24 months. CONCLUSION: Most of lipid profiles were significantly changed during ketogenic diet. Long-term complication for cardio-vascular diseases should be further investigated.

Response of Growth Hormone Treatment to Final Height in Children with Growth Hormone Deficiency and Familial Short Stature / 대한소아내분비학회지

PURPOSE: A number of studies have been published on the effect of growth hormone therapy over 1-3 years in children with growth hormone deficiency(GHD) & Familial short stature(FSS). So far final height data are seldomly available. Final heights of GH treated children with GHD & FSS were evaluated. METHODS: 10 Children with GHD and 69 children with with FSS were enrolled for the study. They were treated with GH 0.1IU/kg/daily in 10 GHD and 20 children with FSS. They were grown up and reached adult height. 49 children with FSS were not treated at all. Facors influencing final height were investigated. RESULTS: 1) All patients with GHD(Idiopathic 8 cases, Organic 2 cases) had additional gonadotropin deficiency and had multiple pituitary hormone deficiency. 2) At start of GH treatment boys of idiopathic GHD were 9.8 years old and 12.4 years old in girls and their mean height was 114.8cm(-2.8SDS), 123.0cm(-2.9 SDS)in boys and girls respectively. Boy with orgnaic GHD was 11.1 years and 6.7 years old in girl. Their height were 126.0cm(-1.5SDS) and 104cm(-1.2SDS) respectively. 3) Mean final height of idiopathic GHD was 167.6cm(-0.5SDS) in male and 161.0 cm(0.7SDS) and that of organic GHD was 173.0cm(0.5SDS) in male and 157cm (0SDS) in girl. 4) Mean Final height in untreated children with FSS was 159.8+/-.2cm(-1.6 SDS)in male and 149.6+/-.3cm(-1.4SDS) in female. Mean final height of GH treated in FSS was 162.5+/-.1cm(-1.5SDS) in male and 152.0+/-.4cm(-1.2SDS) in female But there was no statiscally difference between untreated and treated children in final height. 5) The age of onset of menarche was 12.74+/-.78 years old in GH treated group (n=12) and 12.45+/-.16 years old in untreated group(n=34). CONCLUSION: The GH administration in patients with GHD has been confirmed for growth promotion. but in case of FSS there was no significant difference between treated and untreated group. More further studies are needed for the confirmation of the efficacy of GH therapy in patients with FSS.