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1.A study on current immunization status attending an above-middle from class primary school in Seoul.

3.Evaluation of Focal Bone Mineral Density Using Three-dimensional Measurement of Hounsfield Units in the Proximal Humerus.

Young Lae MOON ; Sung JUNG ; Sang Ha PARK ; Gwi Youn CHOI

Clinics in Shoulder and Elbow 2015;18(2):86-90

BACKGROUND: Although there are several methods for evaluating bone quality, Hounsfield units (HU), a standardized computed tomography (CT) attenuation coefficient, provide a useful tool for estimating focal bone mineral density (BMD). The aim of this study is to investigate the HU for evaluating the degree of osteoporosis in greater tuberosity with regard to anchor positioning. METHODS: Forty patients diagnosed as normal on shoulder CT were included and categorized according to age and gender. Axially sectioned CT images were processed to 3-dimensional models containing information about bone quality using Mimics (14.11 platform v14.1.1.1 Materialise). Three-dimensional anchors were simulated and positioned according to 6 regions of interest (ROI) in the greater tuberosity classified using Tingart's system. Mean HU of intra-anchor volumes in the 6 regions was measured. RESULTS: A significant decrease in HU was observed with increasing age (p=0.0001) and menopause (p<0.001). A significant difference in HU was found between male and female groups with males showing the higher values (p=0.0001). HU of proximal areas of ROI was higher than those of distal areas (p<0.005). However, although mean HU of distal posterior ROI showed the lowest values, no statistically significant difference was found between anterior, middle, and posterior regions (p=0.087). CONCLUSION: Mean HU of ROIs provides a tool for preoperative assessment of focal BMD, which is a factor of suture anchor stability and can be used to aid decision-making regarding secure anchor positioning for rotator cuff repair. Our data support that the most secure point is the proximal regions of ROI.
Bone Density* ; Female ; Humans ; Humerus* ; Male ; Menopause ; Osteoporosis ; Rotator Cuff ; Shoulder ; Suture Anchors

4.An experimental study of the electrical stimulation effect on the tendon healing in vitro.

Sung Chul HONG ; Duck Lae KIM ; Tae Yeon KIM ; Chun Eun CHUNG ; Gil Hong PARK

Journal of the Korean Society of Plastic and Reconstructive Surgeons 1991;18(1):66-74

5.The Clinical and Radiological Analysis of Shunt-Dependent Hydrocephalus after Acute Hydrocephalus in Surgical Aneurysmal Patients.

Yong Hwan SHIN ; Jeong Hyun HWANG ; In Suk HAMM ; Joo Kyung SUNG ; Sung Kyoo HWANG ; Yeun Mook PARK ; Seung Lae KIM

Journal of Korean Neurosurgical Society 2000;29(11):1476-1483

1.A study on current immunization status attending an above-middle from class primary school in Seoul.

2.An epidemiologic study of measles among hospitalized pediatric patients.

3.Evaluation of Focal Bone Mineral Density Using Three-dimensional Measurement of Hounsfield Units in the Proximal Humerus.

4.An experimental study of the electrical stimulation effect on the tendon healing in vitro.

5.The Clinical and Radiological Analysis of Shunt-Dependent Hydrocephalus after Acute Hydrocephalus in Surgical Aneurysmal Patients.

6.Posterior C1-2 Transarticular Screw Fixation without C1-2 Sublaminar Wiring in Atlantoaxial Instability.

7.Anterior Screw Fixation of Type II Odontoid Fracture.

8.Spontaneous Hematomyelia: Case Report.

9.A case of video game epilepsy.

10.A case of D13 ring chromosome syndrome.

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