1.Ipsilateral Fractures of the Hip and Femoral Shaft
The Journal of the Korean Orthopaedic Association 1988;23(3):713-721
Thirteen cases of concomitant hip and shaft fractures of the same femur are reported. The hip fractures was initially missed in one case. Osteosynthesis of both fractures was performed in twelve cases. One except was 12-year-old boy who was managed hip with two Knowles pins and shaft conservatively. Both fractures healed in all followed for average 5.3 months or more. Osteosynthesis of both fractures is recommended as soon as the patient is in a stable condition, preferably by early fixation with AO principle or IM nailing in selected cases.
Child
;
Femur
;
Hip Fractures
;
Hip
;
Humans
;
Male
2.STRESS ANALYSIS AT SUPPORTING TISSUE OF ABUTMENT TEETH AND RESIDUAL RIDGE ACCORDING TO DENTURE DESIGN WITH REMAINING UNILATERAL POSTERIOR TEETH.
Kwang Ho AHN ; Young Wan JUNG ; Tai Ho JIN
The Journal of Korean Academy of Prosthodontics 1999;37(2):185-199
This study was performed to investigate the distribution and magnitude of stress at supporting tissue of abutment teeth and residual ridge tissue with remaining unilateral posterior teeth. Four types of removable partial dentures that included clasp retained removable partial denture, attachment retained removable partial denture, telescopic removable partial denture, and swing-lock partial denture were designed, and strain gauge was used for stress analysis. Each prosthesis was subjected to simulated vertical and oblique load. The following conclusions were drawn from this study. 1. The clasp retained removable partial denture generally distributed simulated vertical force more evenly to the supporting structure. 2. The stress at buccal side of 1st premolar was the lowest in swing-lock partial denture and that was highest in attchment retained removable partial denture. The stress at lingual side of 1st premolar was the lowest in telescopic partial denture. 3. In clasp retained removable partial denture, stress was lower at load site and ridge crest at midline, but it was higher at lst premolar area on vertical load. 4. In attachment removable partial denture, stresses at buccal side of 1st premolar, lingual side of 1st premolar on vertical load, and ridge crest at midline on oblique load were higher. 5. In telescopic removable partial denture, stress at lingual side of 1st premolar was the least in all removable partial dentures, but the stress at load site was higher. 6. In swing-lock removable partial denture, stress at buccal side of 1st premolar was the lowest, and stresses at load site and distal end of residual ridge crest were higher.
Bicuspid
;
Denture Design*
;
Denture, Partial
;
Denture, Partial, Removable
;
Dentures*
;
Prostheses and Implants
;
Tooth*
3.The effects of 1800 vGy cranial irradiation on intellectual function of children with acute lymphocytic leukemia.
Soo Ho AHN ; Jeong Ok HAH ; Jung Hoon LEE
Journal of the Korean Pediatric Society 1991;34(12):1683-1688
No abstract available.
Child*
;
Cranial Irradiation*
;
Humans
;
Precursor Cell Lymphoblastic Leukemia-Lymphoma*
4.Hepatic tuberculous granuloma with subphrenic abscess: a case report .
Sang Cho JUNG ; Jae Ho AHN ; Sung Tae OH
The Korean Journal of Thoracic and Cardiovascular Surgery 1991;24(6):585-589
No abstract available.
Granuloma*
;
Subphrenic Abscess*
5.Clinical analysis on 26 Delayed Union and Nonunions in Children
Zi Hoan CHA ; Jung Ho RAH ; Jae In AHN
The Journal of the Korean Orthopaedic Association 1990;25(1):177-186
Nonunion is extremely rare in children, Weber et al. concluded that considerable skill is required to induce nonunion in a child and its occurrence always results from a serious error in management. Twenty-six cases of delayed union and nonunion examined and treated at department of Orthopedic Surgery, Yonsei University, Wonju College of Medicine during the period of 1970 to 1988 was observed and analysed. 1. Of the 26 cases, there was 18 male and 8 female patients. The results showed more predominence of male over female patients. 2. Delayed union and nonunions commonly occurred over 5 year of age. 3. The causes of the fractures consisted of 12 Fell from heights, 5 Traffic accidents and others. 4. Of the 26 cases, there were 21 closed fractures and 5 open fractures. 5. Prior to admission to this hospital, 15 were treated conservatively and 10 treated operatively, and one received no treatment at all. 6. The sites of delayed union and nonunion were 10 phalanges, 6 tibia, and 3 ulna in order. 7. Probably causes of the delayed union and nonunion were unsatisfactory immobilization in 13 cases, infections in 6 cases, operative complications in 6 cases, interposition of the soft tissues in 2 cases in 2 cases, persistent seperation of the fragments in 1 case. 8. We are considered that the treatment of the nonunion must be individualizd but usually requires eradication of any infection, excision of the intervening fibrous tissue, bone grafting, and internal fixation.
Accidents, Traffic
;
Bone and Bones
;
Child
;
Female
;
Fractures, Closed
;
Fractures, Open
;
Gangwon-do
;
Humans
;
Immobilization
;
Male
;
Orthopedics
;
Tibia
;
Transplants
;
Ulna
6.A Clinical Study of Postoperative Infection in Posterior Spinal Surgery with Pedicle Screw System
Jae In AHN ; Heui Jeon PARK ; Jung Ho RAH
The Journal of the Korean Orthopaedic Association 1994;29(3):994-1003
In the treatment of spinal disorder, the introduction of pedicle screw system is an innovation in modern spinal surgery. This kind of new instrumentation provides correction, adjustment, stabilization, firm fixation and short segment fusion. Everybody should know that these complexities of instrumentation will increase the rated of complications, especially postoperative infection. Postoperative infections continue to be a source of frustration for patients and surgeons, and can lead to significant postoperative difficulties. So we analysed the postoperative infection from the 284 cases we operated on during the September 19S8 to August 1992 and obtained following results: 1. There were 17 cases(6.0%) of postoperative infection. Among them Scases(2.8%) were deep infection. 2. Average fused segments were 3.64 and 2. 96 in deep infection and control group respectively. 3. Staphylococcus aureus was the most frequent organism. Other recurring organisms were St. epidermidis, Enterobacter cloacae and so on. Many patients had multiple organisms. 4. Most significant risk factors for postoperative infection were obestity and prolonged surgery. 5. Just preoperative prophylactic antibiotic administation is more valuable than no prophylaxis and too early administration. 6. Postoperative acute deep infection is is not as easily diagnosed. The clinical manifestation such as sudden increase in pain at the operative site is the most valuable sign. 7. Maintaining the instrumentation in place, continuous irrigation system and the appropriate parenteral antibiotics were the choice of treatment.
Anti-Bacterial Agents
;
Clinical Study
;
Enterobacter cloacae
;
Frustration
;
Humans
;
Pedicle Screws
;
Risk Factors
;
Spine
;
Staphylococcus aureus
;
Surgeons
7.Internal fixation for the spine fusion using long bone plates and screws.
Joo Tae PARK ; Kil Yeong AHN ; Jung Ho YANG
The Journal of the Korean Orthopaedic Association 1991;26(4):1219-1225
No abstract available.
Bone Plates*
;
Spine*
8.Rotational remodelling of femoral fracture: experimental study in puppies.
Jung Ho RAH ; Jae In AHN ; Hwa Seop YUN
The Journal of the Korean Orthopaedic Association 1992;27(6):1516-1522
No abstract available.
Femoral Fractures*
9.The value of CT scan in determining lumbar facet angle.
Jung Ho RAH ; Jae In AHN ; Jong Seon YOON
The Journal of the Korean Orthopaedic Association 1991;26(2):609-614
No abstract available.
Tomography, X-Ray Computed*
10.Arthroscopic meniscal repair: A clinical review.
Yeu Seung YOON ; Jae In AHN ; Jung Ho RAH
The Journal of the Korean Orthopaedic Association 1993;28(6):1996-2001
No abstract available.