Femoral Neck Fracture

The incidence of the femoral neck fracture is increasing, and the mechanism of the injuries is quite different in the young and elderly groups (high energy injury and osteoporosis, respectively). In the young group, early anatomical reduction and rigid fixation by such measures as multiple cannulated screws are mandatory to decrease the complications. In the elderly group, hip arthroplasty is recommended to decrease the complications due to early mobilization.

Analysis of Grip and Pinch Strength in Korean People / 대한정형외과학회잡지

PURPOSE: We wanted to investigate the grip and pinch strength of hands and establish the clinical normative data for Korean people. MATERIALS AND METHODS: A sample of 234 Korean males and 281 Korean females (age: 10 to 84) were tested. Grip strength and pinch strength were tested twice with 5 minute interval between tests. RESULTS: Generally, hand strength peaked at 30 to 39 of age for both males and females. The average grip strength was 48.8 kg for males and 28.23 kg for females and they were 11% stronger than 12 years before in both groups. Tip pinch strength peaked in the forties, but key pinch and tripod pinch peaked in the thirties. All the peak hand strength was obtained in the 30 to 39 age group of females. Among the pinch strengths, key pinch was the strongest. For the right-handed people, the grip and pinch strengths of the right hand were stronger than those of the left hand. However, for the left-handed people, the left hand was stronger than the right hand only for the tripod pinch (p<0.005). CONCLUSION: The hand strength of Koreans peaked in the 30 to 39 age group. Key pinch was the strongest among the three pinch strengths. Right-handed people have a stronger right hand than the left hand, but the left-handed people have almost the same hand strength in both hands, except for the tripod pinch.

Decompressive Effect of Indirect Decompression in Thoracolumbar Burst Fracture / 대한정형외과학회잡지

This study was performed to establish a radiological indication and contraindication of indirect decompression in the thoracolumbar burst fracture as well as to clarify an acceptable degree of the canal constriction to enhance neurologic recovery and to prevent the spinal stenosis. The canal diameter ratio (CDR) of the constricted level was determined using pre-and post-operative CAT images of 31 thoracolumbar burst fractures, decompressed indirectly. The acceptable CDR was decided by the lower limit of the 95% confidence interval of the post-operative CDR in cases without neurologic deficit associated with the canal constriction. A radiological indication and contraindication of indirect decompression was establish based on the calculation of the discriminant equation and linear regression equation respectively. The results were as followings. 1. The acceptable CDR was 46% at the cauda equina level and 37% at the conus medullaris level. 2. According to the result of calculation of the regression equation, the radiological contraindication of indirect decompression was the pre-operative CDR of 13% or less at the cauda equina level and 27% or less at the conus medullaris level. In conclusion, the radiological indication of indirect decompression was the pre-operative CDR of 34% at the cauda eqbina level and 42% at the conus medullaris.