We checked and analysed the clinical and radiological status of the upper extremities of 142 baseball player in childhood and adolescence. The results of this study were as follow:1. The oreder of frequency of pain locations in the upper extremities was elbow, shoulder, and then wrist joint. 2. There was colse relationship between elbow pain and career, but not in shoulder and wrist area. 3. The characteristics of shoulder or wrist pain were diffuse and vague nature, but elbow pain was located in medial aspect. 4. The cubitus valgus and limited elbow ROM in throwing side were found in pitchers or older careers. 5. All players showed cortiocotrabecular hypertrophy of humerus, and high incidence of medial epicondylar changes were noticed with career increased. 6. Main bony changes: Shoulder
Adolescent ; Baseball ; Elbow ; Epiphyses ; Growth Plate ; Humans ; Humerus ; Hypertrophy ; Incidence ; Joints ; Shoulder ; Upper Extremity ; Wrist ; Wrist Joint

OBJECTIVE: To realize the automated assessment of the levels of epiphysis of distal radius and ulna by support vector machine (SVM). METHODS: The X-ray films of the left wrist joints were taken from 140 teenagers aged from 11 to 19 years old as training samples. The levels of epiphysis of distal radius and ulna were divided into five developmental levels. Each level contained 28 samples. Another 35 cases were selected as independent verifying samples. SVM classification models of the five developmental levels of epiphysis of distal radius and ulna were established. The internal cross validation was made by leave one out cross validation (LOOCV), while the external validation was made by histogram of oriented gradient (HOG), and then the accuracy (PA) of testing results was calculated, respectively. RESULTS: The PA of SVM, LOOCV and HOG of distal radius epiphyseal level were 100%, 78.6%, and 82.8%, respectively; whereas the PA of SVM, LOOCV and HOG of distal ulna epiphyseal level were 100.0%, 80.0% and 88.6%, respectively. CONCLUSION The SVM-based automatic models of the growth stage of distal ra- dius and ulna appear to have certain feasibility, and may provide a foundation for software development of bone age assessment by forensic medicine.
Adolescent ; Bone Development/physiology* ; Child ; Epiphyses/growth & development* ; Female ; Humans ; Image Processing, Computer-Assisted/methods* ; Male ; Radius/growth & development* ; Support Vector Machine ; Ulna/growth & development* ; Wrist/growth & development* ; Wrist Joint/growth & development* ; Young Adult

Various types of horizontal reference planes are used for diagnosis, treatment planning and evaluation of treatment results. But these reference planes lack accuracy and repro- ducibility, and are mainly for Caucasian. Unlike the adult patients who have completed growth, the horizontal reference planes for growing children may change continuously during growth, Therefore this must be considered in selecting the horizontal reference plane. The purpose of this study was to investigate the angle formed by the Sella-Nasion(SN) plane and Frankfort-Horizontal(FH) plane and evaluate the angle formed by FH plane and other horizontal reference planes in relation to different skeletal maturity and malocclusion types. 540 subjects with no orthodontic treatment history were chosen, and hand wrist X-rays and lateral cephalometric X-rays were taken, According to SMA(Skeletal maturity Assessment)of hand -wrist X-rays, the subjects were classified into 3 skeletal maturity groups ; SMI 1-2 for group A, SMI 5-7 for group B and SMI 8-11 for group C. A second classification was made according to cephalometric analysis of lateral cephalograms. The subjects were classified into 3 malocclusion group ; Skeletal Class I,II and III malocclusion group. 10 measurements were evaluated. The results were as follow. 1. The angle formed by the SN plane and FH plane showed no difference among skeletal maturity groups, malocclusion groups, and between sexes. 2. The angles formed by the SN plane and FH plane were 8.27degrees+/-2.31degrees for males and 8.59degrees+/-2.24degrees for females. The average value for females and males was 8.42degrees+/-2.28degrees. 3. The angle formed by the FH plane and palatal plane was almost constant showing no difference among skeletal maturity groups, malocclusion groups, and between sexes( 1.0 9degrees+/- 3.21degrees).
Adult ; Child* ; Classification ; Diagnosis ; Female ; Growth and Development ; Hand ; Humans ; Male ; Malocclusion ; Wrist

Growth and development evaluation of patients with growth potential is of great importance for orthodontic treatment planning. Timing of orthodontic intervention greatly depends on one`s developmental status, thus if there is a difference in skeletal maturation among malocclusion types different treatment timing should be applied. The objective of this study was to evaluate and compare skeletal maturation among different malocclusion types. The samples used in this study was 38 ClassI. 36 ClassII and 33 ClassIII females aging from 8 to 10 years. Handwrist X-rays were taken with 6 month interval till 12-13 years of age. The results were as follows. 1. There was no skeletal maturity difference among different malocclusion types. 2. The hamular process of hamate was observed at 9.16+/-0.72 years, pisiform bone at 9.13+/-0.71 years and the ulnar sesamoid at 10.34+/-0.84 years. 3. The timing of epiphyseal capping on the third finger was 10.96+/-0.80 years for distal phalanx and 11.27+/-0.87 years for middle phalanx, 11.12+/-0.86 years for proximal phalanx of the first finger, 11.21+/-0.82 years for radius and 11.62+/-0.85 years for middle phalanx of the fifth finger. 4. The appearance of pisiform bone showed high correlation with appearance of hamular process of hamate(r=0.91), and ulnar sesamoid bone appearance showed high correlation with advanced ossification of hamular process(r=0.86). Timing of epiphyseal capping among different parts showed high correlation(r=0.80-0.90). 5. The shape of middle phalanx of the fifth finger showed the highest variability (20.6%).
Aging ; Female ; Fingers ; Growth and Development ; Hand* ; Humans ; Longitudinal Studies* ; Malocclusion* ; Pisiform Bone ; Radius ; Sesamoid Bones ; Wrist*

BACKGROUND AND OBJECTIVES: There is little data to indicate that hypertrophy of adenoid and tonsil may cause short stature. However, there is no data relating short stature to allergic rhinitis in the Korean population. The aim of this study was to investigate the effect of hypertrophy of adenoid and tonsil and allergic rhinitis on children with short stature. SUBJECTS AND METHOD: One hundred and ninety-one children were included in the disease group, which consisted of three groups, allergic rhinitis only (n=83), hypertrophy of adenoid and tonsil only (n=67), and combintorial of allergic rhinitis and hypertrophy of adenoid and tonsil (n=41). There were 174 pediatric patients in the control group. Growth hormone levels, thyroid function and both wrist X-rays were checked on the children with short stature in order to exclude other chief medical problems causing short stature. For the purpose of evaluating the relationship between short stature and clinical factors, allergy parameters, eosinophil partition rate and total IgE levels were checked in the allergic rhinitis group, and the size of the adenoid and tonsil were checked in the adenoid and tonsil hypertrophy group. The relationship between the incidence of short stature and above clinical factors was evaluated. RESULTS: The incidence of short stature was significantly higher in each disease group than in the control. However, there was no statistically significant differences between each disease group. The above clinical factors were not associated with short stature. CONCLUSION: Hypertrophy in adenoid and tonsil and allergic rhinitis might be an independent cause of short stature.
Adenoids* ; Body Height ; Child* ; Eosinophils ; Growth Hormone ; Humans ; Hypersensitivity ; Hypertrophy* ; Immunoglobulin E ; Incidence ; Palatine Tonsil* ; Rhinitis* ; Thyroid Gland ; Wrist

Septic arthritis of the shoulder joint in a neonate is very rare. Damage to the growth plate and ossification center of the proximal humerus may lead to disability of the shoulder joint. Therefore, early diagnosis and proper treatment are very important. We treated septic arthritis of the shoulder joint in a 9-day old newborn baby by arthroscopic irrigation and debridement using a 2.4 mm wrist arthroscope instrument. We could achieve a satisfactory result by inspecting the inside condition of the joint directly, removing granulation tissues and debris and washing out the joint by arthroscopy.
Arthritis, Infectious ; Arthroscopes ; Arthroscopy ; Debridement ; Early Diagnosis ; Granulation Tissue ; Growth Plate ; Humans ; Humerus ; Infant, Newborn ; Joints ; Shoulder ; Shoulder Joint ; Wrist

The purpose of this study was to assess the effect of basic-fibroblast growth factor (bFGF) on the xenograft for radial bone defect in adult rats. Twenty adult Wistar rats weighing between 200 and 250g were divided into two groups; bFGF group (10 rats, 20 radiuses) and non-bFGF group (10 rats, 20 radiuses). A segmental bone defect measuring 5mm in length was made at both radiuses 10mm proximal to the wrist joint. The defect was filled with xenograft (Lubboc) measuring 3x3x5 mm in size. The xenograft was treated with 400 ng/ml bFGF (recombinant human basic-fibroblast growth factor ) mixed with liquid collagen (Vitrogen 100) in the bFGF group, but with collagen alone in the non- bFGF group. At 6 and 12 weeks after the treatment, the radiuses were harvested and examined histologically and the area of the remained xenograft not replaced by host bone was measured by image analysis system (VIDAS) on mid-sagittal section. The new bone formation and maturation from the differentiation of osteoblast was more remarkable in the bFGF group than in the non-bFGF group. At the time of 6 and 12 weeks after the treatment, the mean of the remained xenograft area was significantly smaller in the bFGF (9.16+/-0.49mm2, 6.20+/-0.30mm2) than in the non-bFGF group (12.16+/-0.59mm2, 10.07+/-0.48mm2) (P<0.001). In comparison with the areas of new bone replacemet area between 6 week and 12 week groups, sigificant and remarkable new bone replacement area could be achieved in the bFGF group than in the non-bFGF group (P<0.05). From these results, it is suggested that bFGF might increase the replacement of xenograft by new host bone and accelerate the healing process for the segmental bone defect of the radius in adult rats.
Adult ; Animals ; Collagen ; Fibroblast Growth Factor 2 ; Heterografts ; Humans ; Osteoblasts ; Osteogenesis ; Radius ; Rats* ; Rats, Wistar ; Wrist Joint

We assessed genetic and environmental effects on bone development of the hand and wrist, and on key anthropometric measures in Chinese young twins. In total, 139 monozygotic and 95 dizygotic twin pairs aged from 5 to 18 years were recruited. The twin correlations of total hand and wrist scores for monozygotic (MZ) and dizygotic (DZ) twins were 0.71 and 0.36, respectively. Bivariate model analysis showed moderate genetic correlations only for total skeletal maturity vs. weight and total skeletal maturity vs. waist circumference (r, 0.51 and 0.46, respectively). Our findings demonstrated that genetic factors played important roles in bone development of the hand and wrist in Chinese young twins, and that these genetic effects might be distinct from those influencing anthropometric measures.
Adolescent ; Bone Development ; genetics ; Child ; Child, Preschool ; China ; Environmental Exposure ; Hand Bones ; growth & development ; Humans ; Twins, Dizygotic ; Twins, Monozygotic ; Wrist ; growth & development

OBJECTIVETo explore a method for objectively and accurately evaluating cervical vertebral bone age among Chinese growing subjects.

METHODSUsing cephalometric and hand-wrist radiographs of 90 boys and 90 girls who were during pubertal period, we measured the third and fourth cervical vertebral bodies and calculated hand bone age using Liaokawa's method. A formula for calculating cervical vertebral bone age was determined by stepwise multiple regression analysis.

RESULTSA method for objectively evaluating cervical vertebral bone age among Chinese growing subjects during pubertal period was established. Y (Y: cervical vertebral bone age) = -20.189 + 24.666X(1) (X(1): AH(4)/AP) +46.468X(2) (X(2): AH(3)/AP(3)) +39.854X(3) (X(3): AH(4)/H) (r = 0.901). The R square of the equation was 0.81. The mean and standard deviation were as follows: constant = -20.19 +/- 4.89 (t = -4.13, P < 0.01), AH(4)/AP(4) = 24.67 +/- 8.32 (t = 2.97, P < 0.01), AH(3)/AP(3) = 46.47 +/- 6.60 (t = 7.04, P < 0.01), AH(4)/H(4) = 39.85 +/- 7.04 (t = 5.66, P < 0.01).

CONCLUSIONSThis method could be used to evaluate Chinese growth stages objectively.

Adolescent ; Age Determination by Skeleton ; methods ; Cervical Vertebrae ; diagnostic imaging ; growth & development ; Female ; Humans ; Male ; Puberty ; Regression Analysis ; Wrist ; diagnostic imaging ; growth & development

This study evaluates the suitability of cadavers embalmed by the ethanol-glycerin fixative for the dissection course of medical students and the hands-on dissection workshop of clinicians. Five cadavers were embalmed by two different methods: two formalin-phenol fixation (FPF) and three ethanol-glycerin fixation (EGF) cadavers. The measurement of physical and chemical characteristics including ranges of motion (ROM), bacterial and fungal culture tests, and ultrasonography were performed for each cadaver. The EGF cadavers were evaluated to be significantly more suitable than FPF cadavers for the physical and chemical characteristics including color, texture, elasticity, wetness (softness), skin incision, vessel ligation and suture, decollement, odor, and irritant. In shoulder, elbow, and wrist joints, ROMs of the EGF cadavers were statistically more than those of the FPF except for elbow extension. On bacterial and fungal culture tests at 8 weeks after carrying out of refrigerator, one bacteria were detected in one EGF cadaver; however, some bacteria and fungi could be detected in all FPF cadavers. The ultrasound images of abdominal organ and thigh musculature could be more clearly detected in the EGF cadavers than those of FPF cadavers. These results indicate that the EGF method had a sufficient antibiotic effect and produced cadavers with flexible joints and a high tissue quality suitable for various cadaveric dissection courses.
Bacteria ; Cadaver* ; Education ; Elasticity ; Elbow ; Embalming* ; Epidermal Growth Factor ; Fungi ; Humans* ; Joints ; Ligation ; Methods ; Odors ; Shoulder ; Skin ; Students, Medical ; Sutures ; Thigh ; Ultrasonography ; Wrist Joint