1.Application of The Ischial Weight-bearing Functional Long Leg Brace
Sang Cheol SEONG ; Se Il SUK ; Jin Kwan CHANG
The Journal of the Korean Orthopaedic Association 1976;11(3):563-570
The ischial weight-bearing functional long leg brace is one of the new immobilization devices, which allows patients to walk using less energy than was required by other devices-e.g. cast, cast-brace, conventional long leg brace. It has advantages as minimal pain and irritation, more natural gait, convenience of free joint motion, and good skin hygiene. The brace consists of quadrilateral total contact thigh shell, bilateral up-rights, knee joint, tibial cuff band and ankle-foot section. The brace was applied to 10 patients with variable diseases treated at the Department of Orthopedic Surgery, Seoul National University Hospital, from Mar-74 to May-76. It was applied postoperatively to 4 cases of femoral shaft fractures and 1 case of fibrous dysplasia of the tibia and applied to 4 cases of Legg-Perthes' disease as one of conservative managements. The brace was modified into “abduction-internal rotation functional long leg brace” in cases of Legg-Perthes disease. In 1 cases of post-infectious subluxation of the hip, the stability was maintained by use of the brace. With this experience, it is expected that the ischial weight-bearing functional long leg brace may be applied to other pathologic conditions of the lower extremity in which weight-bearing is to be avoided or guarded.
Braces
;
Gait
;
Hip
;
Humans
;
Hygiene
;
Immobilization
;
Joints
;
Knee Joint
;
Leg
;
Legg-Calve-Perthes Disease
;
Lower Extremity
;
Orthopedics
;
Seoul
;
Skin
;
Thigh
;
Tibia
;
Weight-Bearing
2.Osteochondritis dissecans in Children: A case report
Sang Cheol SEONG ; Se Il SUK ; Jin Kwan CHANG
The Journal of the Korean Orthopaedic Association 1976;11(3):447-450
Osteochondritis dissecans is a joint affection characterized by partial or complete detachment and necrosis of cartilage fragment and underlying bone from the articular surface. It is seen frequently in knee, elbow and ankle joints. Young males are most commonly affected. Also it develops not infrequently in children, but never in a child under 4 years of age. A case of osteochondritis dissecans which occurred in a 6-year-old boy is reported here. The patient had been sufferred from pain, swelling and progressive limitation of motion of the left knee. X-ray showed shadows like loose bodies on posteromedial aspect of the left knee. Clinically, possibility of tuberculous arthritis could not be rulled out. Loose bodies were removed, and almost detached ostechondral fragment was excised. At post-operative second week, crutch walking and physiotherapy were recommended.
Ankle Joint
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Arthritis
;
Cartilage
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Child
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Elbow
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Humans
;
Joints
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Knee
;
Male
;
Necrosis
;
Osteochondritis Dissecans
;
Osteochondritis
;
Walking
3.Change of the Tibio
Sang Cheol SEONG ; Se Hyun CHO ; Gang Sup YOON
The Journal of the Korean Orthopaedic Association 1984;19(5):784-788
Degenerative arthritis of the knee joint is one of the main causes of disability in middle-aged persons. This paper is planned by the necessity of objective information upon changes of tibio-femoral angle according to weight bearing in patients with degenerative arthritis of the knee joint. The authors studied the tibio-femoral angle in 29 cases of degenerative arthritis of the knee ranging fmm 5th to 6th decades of age, and compared with 27 cases of the control group, in the Dept. of Orthopedic Surgery, S.N.U.H. fmm Mar. 1983 to May 1984. The following observations were obtained: 1. In patients with degenerative arthritis of the knee, changes of the tibio-femoral angle according to weight bearing were +2.2±1.94 in 5th decade, +2.3±2.02 in 6th decade. 2. Compared to control group, the degenerative arthritis group showed a significant varization with weight bearing. 3. It was seemed that the weight bearing radiography is essential in diagnosis and treatment of degenerative arthritis of the knee joint.
Diagnosis
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Humans
;
Knee
;
Knee Joint
;
Orthopedics
;
Osteoarthritis
;
Radiography
;
Weight-Bearing
4.The Effect of Tibiofemoral Alignment on the Results of Total Knee Arthroplasty
Myung Chul LEE ; Sang Cheol SEONG ; Tae Gyun KIM
The Journal of the Korean Orthopaedic Association 1994;29(2):634-640
There have been several reports that total knee arthroplasty(TKA) was most likely to survive successfully if the coronal tibiofemoral angle was close to 7 degree of valgus, the accepted normal. In order to know whether the postoperative coronal tibiofemoral angle influences the result of total knee arthroplasty, we examined the 152 TKA cases in 106 patients which had been performed at Department of Orthopaedic Surgery, Seoul National University Hospital from Jan. 1987 to Dec. 1991. In our series the average follow-up period was 31 months(range, 13 months to 75 months). Coronal tibiofemoral angles of all cases were checked on weight bearing anteroposterior plain X-rays and were divided into three groups(less than valgus 2° ; valgus 3° to 7° ; greater than valgus 8°). All cases were analyzed on the knee score of Hospital for Special Surgery and the American Knee Society total knee arthroplasty roentgenographic evaluation and scoring system and the cases with radiolucent lines wider than 2mm were checked. Three groups were analyzed comparatively with statistical means(Wilcoxon signed rank test, X² test). There were no significant differences in the clinical results of total knee arthroplasty according to the postoperative coronal tibiofemoral angle. Lateral subluxation of the patella occurred more frequently when the postoperative coronal tibiofemoral angle was above valgus 8°. In the tibial components of group lesser than valgus 2°, the frequency of radiolucent lines wider than 2mm was higher than those of other groups, but its significance should be examined through long term follow-up.
Arthroplasty, Replacement, Knee
;
Follow-Up Studies
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Humans
;
Knee
;
Patella
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Seoul
;
Weight-Bearing
5.A Preliminary Report of Hybrid Total Knee Arthroplasty: Comparative STduy with Cementless Technique
Sang Cheol SEONG ; Myung Chul LEE ; Tae Gyun KIM
The Journal of the Korean Orthopaedic Association 1995;30(1):59-69
Although long-term studies of total knee arthroplasty(TKA) have confirmed reliable relief of pain and maintenance of function, survivorship at nine to ten years has been inconsistent with late component loosening being the most frequent mode of failure. Tibial component failure has been more frequent than failure of the femoral or patellar component in most TKA series. Encouraged by the early results of porous-ingrowh femoral and patellar components, and aware of retrieval studies showing poor bone ingrowth into tibial components, the “hybrid” method of fixation with an uncemented femoral component and a cemented tibial component, has been introduced and incorporated the potential advantages of both traditional fixation techniques. Between January 1987 and December 1991, forty-five “hybrid” TKAs(group I) were performed in degenerative arthritis and evaluated retrospectively in comparison with the results of nineteen noncemented porous-coated TKAs(group II) in degenerative arthritis. The average follow-up period was 31 months(range, 14 to 60 months) in group I and 26 months(range, 13 to 63 months) in group II. Using the knee rating scale of the Hospital for Special Surgery and the American Knee Society Roentgenographic Evaluation and Scoring System, clinical and radiological comparative study between two groups was performed. Pain scores, range of motion and HSS knee scores improved in both groups, but there was no significant difference between group I and group II(p>0.05). In both groups, the scores of radiolucent lines were significantly higher in zone 1 and 4 of A-P roentgenograph of the tibial component than in other zones(p < 0.05). The tibiofemoral angle was corrected from varus 2.7° to valgus 5.8° in group I and from varus 3.4° to valgus 4.6° in group II. There was no significant differences in component position and scores of radiolucnet lines between group I and group II. In conclusion, there were no significant differences in clinical and radiological results between the “hybrid” and the cementless groups. Results of this study suggest that both the hybrid fixation and the comentless techniques can reliably provide satisfactory clinical and radiological results in properly selected degenerative arthritis patients. But the final outcomes of this study need further evaluation through long term follow-up.
Arthroplasty, Replacement, Knee
;
Follow-Up Studies
;
Humans
;
Knee
;
Methods
;
Osteoarthritis
;
Range of Motion, Articular
;
Retrospective Studies
;
Survival Rate
6.Results of Total Knee Arthroplasty in the Knees with Fixed Flexion Contracture
Sang Cheol SEONG ; Myung Chul LEE ; Yong Beom PARK
The Journal of the Korean Orthopaedic Association 1995;30(4):900-908
The authors reviewed 85 knees in 59 patients(9 males, 50 females) who had preoperative flexion contracture(FC) greater than 20° and taken total knee arthroplasty(TKA) at the Seoul National University Hospital from Jan.1987 to Dec.1992. We reviewed the surgical methods according to preoperative FC, changes of postoperative FC and range of motion, and clinical and radiologic findings. In our series, 48 knees were degenerative arthritis(average FC: 26°), 34 knees, rheumatoid arthritis(average FC: 40°)and 3 knees, others(average FC:28°). The average follow-up period was 2 years(range, 1 to 4(+8) years). Seventy three knees with FC less than 45 (Group I)had been treated with TKA accompanied with adequete soft tissue release, removal of osteophyte and appropriate bone resection. Eleven knees with FC greater than 50° (Group II) had been treated with skin traction followed by TKA. One knee with 65° of FC(Group III)was treated with posterolateral and posteromedial release including tendon lengthening at first, and then TKA in second stage. Preoperative FC was significantly greater in RA group than in DA group. Flexion contracture improved until postoperative 3 years in DA group and improved until postoperative 2 years and slightly deteriorated after then in RA group, but statistically insignificant(p>0.05). There was no difference of FC at postoperative 2 weeks and final follow-up between Group I and II. Range of motion improved until postoperative 2 years in DA group significantly(p < 0.05). In RA group, range of motion improved until postoperative 2 years(p>0.05) and deteriorated after then(p < 0.05). With TKA, range of motion increased significantly in both Group I and II and there was no difference of range of motion between Group I and II at final follow-up. Postoperative HSS score and pain score improved in DA and RA groups significantly, and final HSS score with greater in DA group than RA group(p < 0.05). Preoperative HSS score and pain score of Group I were significantly higher than those of Group II, but final follow-up, there was no difference between two groups. There was no correlation between final FC and HSS score. There was no difference in score of radiolucency between two groups in which final FC was greater and lesser than 10°. We thought that in knees with fixed flexion contracture, successful correction of moderate to severe flexion contracture and satisfactory result of total knee arthroplasty can be achieved by adequate soft tissue release, appropriate bone resection, and/or preoperative management.
Arthroplasty, Replacement, Knee
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Contracture
;
Follow-Up Studies
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Humans
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Knee
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Male
;
Osteophyte
;
Range of Motion, Articular
;
Seoul
;
Skin
;
Tenotomy
;
Traction
7.Arthroscopic treatment of osteochondral lesion of ankle.
Myung Chul LEE ; Sang Cheol SEONG ; Seung Baik KANG
Journal of the Korean Knee Society 1993;5(1):88-97
No abstract available.
Ankle*
8.A Comparative Study on Healing of Bone - Tendon Autograft and Bone - Tendon - Bone Autograft Using Patellar Tendon in Rabbits.
Min Jong PARK ; Sang Cheol SEONG ; Myung Chul LEE
The Journal of the Korean Orthopaedic Association 1998;33(2):445-457
The purpose of this study is to compare the biologic properties of tendon to hone healing and hone to hone healing in knee ligament reconstruction. The lateral 4mm of patellar tendon which was detached from its tihial insertion site either subperiostcally(group I) or with a bone block(group II) was implanted and fixed using pullout method to the proximal tihia. Ten rabbits were killed at each of four time periods (two, four, eight and twelve weeks after the implantation), and the histological and biomechanical characteristics of thc graft healing sites were evaluated. Serial histological analysis of tendon to hone healing group revealed organization of the healing site similar to normal tendon to hone attachment by twelve weeks, while hone to bone healing group demonstrated direct hony union by eight weeks. The tension failure test for the patellapatellar tendon graft - tihia complex revealed that group II had significantly higher values than group I at four and eight weeks. The findings ot this study demonstrated that bone to hone healing has more rapid process than tendon to hone healing, although no significant difference was noted once the healing has matured. We can suggest lhat the duration and extent of postoperative protection of the knee for pntients who had a reconstruction of a ligament using hone - lendon autograft should be longer and higher than lor patients who had a reconstruction using hone - tendon hone autogralf.
Autografts*
;
Dronabinol
;
Humans
;
Knee
;
Ligaments
;
Patellar Ligament*
;
Rabbits*
;
Tendons*
;
Transplants
9.Clinical analysis of pigmented villonodular synovitis.
Sang Cheol SEONG ; Myung Chul LEE ; Jin Young PARK
The Journal of the Korean Orthopaedic Association 1993;28(6):2248-2255
No abstract available.
Synovitis, Pigmented Villonodular*
10.Comparative analysis of cemented versus cementless total knee replacement arthroplasty.
Myung Chul LEE ; Sang Cheol SEONG ; Sug Jun KIM
The Journal of the Korean Orthopaedic Association 1993;28(7):2559-2569
No abstract available.
Arthroplasty*
;
Arthroplasty, Replacement, Knee*