1.Clinical Study of Tibial Fracture: Comparison of 3 Methods
Hyung Ku YOON ; Kun Yung LEE ; Dong Wook PARK ; Chul Soo JOO ; Myoung Sub SHIM
The Journal of the Korean Orthopaedic Association 1988;23(3):687-697
There is much controversy concerning the method of treatment on the tibial fracture because of frequent complications, such as non-union, delayed union and infection. Authors reviewed and analyzed 110 tibial fractures which had been treated at the Department of Orthopedic Surgery, Sung Ae General Hospital from June 1983 to March 1987 by the groups, conservative treatment, open reduction and internal fixation with compression plate and closed flexible intramedullary nailing. The results were as follows :1. In regard to the fracture location, there was no difference in the healing time among the treatment methods. The I.M. nailing group healed 1.5 weeks earlier than other groups in each location. 2. In minor and moderate severity by Ellis, the I.M. nailing group revealed better result, and in major one, the compression plate group showed better result. More complications occured in major severity. 3. Union time among the trestment methods was not affected by the fibular fractures, but most of the complications occured in the concomitant fibular fracture case. 4. In open fracture, the healing time showed no difference among the groups, and was prolonged about 2 weeks than closed fracture. In closed case, the I.M. nailing group showed good result. 5. The cases, which were reduced earlier in the conservative group, and treated within 3 days in the I.M. nailing group revesled better result. 6. The radiological union time from the definite treatment was 15.80 weeks in the conservative treatment group, 15.18 weeks in the compression plate group and 13.92 weeks in the I.M. nailing group.
Clinical Study
;
Fracture Fixation, Intramedullary
;
Fractures, Closed
;
Fractures, Open
;
Hospitals, General
;
Methods
;
Orthopedics
;
Tibia
;
Tibial Fractures
2.Congenital Dislocation of the Knee: 2 Cases
Hyung Ku YOON ; Dong Wook PARK ; Myoung Sub SHIM ; Kun Yung LEE
The Journal of the Korean Orthopaedic Association 1989;24(2):631-635
Congenital dislocation of the knee is very rare deformity and presents with anterior displacement of the tibia in relation to the femur. Early gentle manipulation and serial splintage or plaster cast is recommended for treatment and successful in the majority except the case of quadriceps contracture or late correction. We experienced two cases of bilateral congenital dislocation of the knee who had been treated with early gentle manipularion, immobilization with serial corrective dual splint, passive stretching and night splint. Our results are good in both cases.
Casts, Surgical
;
Congenital Abnormalities
;
Contracture
;
Dislocations
;
Femur
;
Immobilization
;
Knee
;
Muscle Stretching Exercises
;
Splints
;
Tibia
3.Utility of the Anterior Segment Optical Coherence Tomography for Measurements of Central Corneal Thickness.
Hyoung Sub SHIM ; Chul Young CHOI ; Hee Gyung LEE ; Myoung Joon KIM ; Hung Won TCHAH
Journal of the Korean Ophthalmological Society 2007;48(12):1643-1648
PURPOSE: To demonstrate the capability of anterior segment optical coherence tomography (OCT), to evaluate central corneal thickness (CCT) and to compare the results with those by Orbscan II and standard ultrasound (US) pachymetry. METHODS: One examiner measured the CCT of 44 normal eyes of 22 subjects using anterior OCT, Orbscan II, and US pachymetry. Non-contact measurements by anterior segment OCT and Orbscan II were performed first, followed by contact measurements using US pachymetry. Three consecutive measurements were taken with each method and the mean values and correlations were analyzed. RESULTS: The mean value of the CCT was 531.45+/-32.90 micrometer with anterior OCT, 537.11+/-32.21 micrometer with Orbscan II, and 548.18+/-34.17 micrometer with US pachymetry. There was no statistically significant difference among the values obtained by the 3 instruments (P>0.05). CCT measurements by anterior segment OCT were highly correlated with Orbscan II and US pachymetry (P<0.001) measurements. CONCLUSION: CCT measurements by anterior segment OCT are highly correlated with Orbscan II or US pachymetry measurements. Using non-contact anterior segment OCT, a closer examination of the anterior segment including the cornea is possible. The measurement of the CCT using anterior segment OCT is applicable because result values are similar to measurements by Orbscan II or US pachymetry.
Cornea
;
Tomography, Optical Coherence*
;
Ultrasonography
4.Reliability of implant stability measuring devices depending on various clinical conditions: an in vitro study
Han-Na LEE ; Myoung-Sub KIM ; Jeong-Yol LEE ; Xu ZIHAN ; Jae-Jun RYU ; Ji-Suk SHIM
The Journal of Advanced Prosthodontics 2023;15(3):126-135
PURPOSE:
. The aim of this study was to evaluate the reliability of implant stability measuring devices depending on the location of the implant and the position of the patient.
MATERIALS AND METHODS:
. Six implants were installed in different dentate sextants of six artificial bone models. Implant stability was measured in three conditions of the bone model (without mounting on a phantom head, mounted on a phantom head in supine position, and mounted on a phantom head in upright position). A resonance frequency analysis device (Osstell) and two damping capacity analysis devices (Periotest and Anycheck) were used to measure implant stability. The values measured outside the phantom head were treated as controls, and the values inside the phantom head were compared using an independent t-test.
RESULTS:
. Osstell showed different results in two of the six divisions in both the supine and upright positions compared to outside of the mouth (P < .05). Periotest showed different results in all six parts in the supine position and in five parts in the upright position compared to outside of the mouth (P < .05). While Anycheck showed different results in five areas in the supine position compared to outside of the mouth, it showed different results in only one area in the upright position (P < .05).
CONCLUSION
. In the difficult implant position for the operator to access, the implant stability measuring devices show less reliability. The accessibility of implant is greatly affected in the order of Osstell, Anycheck, and Periotest. [J Adv Prosthodont 2023;15:126-35]