Byung-Ki Cho

Chungbuk National University, Chinsen, Chungcheongbuk-do, South Korea

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Publications (32)11.83 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: The present prospective study was conducted to evaluate the clinical outcomes of the new ligament reattachment procedure for chronic lateral ankle instability in high-demand athletes. A total of 24 athletes <30 years old were followed for >2 years after undergoing the modified Brostrom procedure using the suture bridge technique. The clinical evaluation included the Karlsson score, the Sefton grading system, and the period to return to exercise. As an evaluation of mechanical stability, the talar tilt angle and anterior talar translation were measured on stress radiographs. The Karlsson score had improved significantly from a preoperative average of 43.5 points to 92.2 points. Using the Sefton grading system, 22 (91.7%) patients achieved satisfactory results. The period to return to exercise was as follows: a mean of 8.4 weeks for jogging, 12.5 weeks for spurt running, 10.5 weeks for jumping, 9.2 weeks for 1 leg standing for >1 minute, 10.6 weeks for walking on uneven ground, and 11.2 weeks for going downstairs. The talar tilt angle and anterior talar translation had improved significantly from the preoperative average of 15.4° and 13.3 mm to 3.8° and 4.2 mm at 2 months postoperatively and 4.9° and 4.8 mm at the final follow-up visit, respectively. The modified Brostrom procedure using the suture bridge technique resulted in satisfactory clinical outcomes comparable to those with conventional ligament reattachment techniques. The suture bridge technique appears to be an effective treatment option for chronic ankle instability in high-demand athletes. Copyright © 2015 American College of Foot and Ankle Surgeons. Published by Elsevier Inc. All rights reserved.
    The Journal of foot and ankle surgery: official publication of the American College of Foot and Ankle Surgeons 10/2014; DOI:10.1053/j.jfas.2014.09.008 · 0.98 Impact Factor
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    ABSTRACT: There are various ligament reattachment techniques for the modified Brostrom procedure. There have been few comparative studies on recently developed techniques. This prospective study was performed to compare the functional outcomes of 2 different ligament reattachment techniques using suture anchors. We furthermore evaluated the cost-effectiveness of the suture bridge technique.
    Foot & Ankle International 09/2014; 36(2). DOI:10.1177/1071100714552079 · 1.63 Impact Factor
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    ABSTRACT: The present study reports a case with concomitant tethering of the flexor tendon and extensor tendon of the hallux after closed tibiofibular shaft fractures. We have obtained good clinical results using tenotomy of the flexor hallucis longus tendon and Z-plasty lengthening of the extensor hallucis longus tendon. Because few studies have described the clinical results and operative methods for this type of combined deformity, we report a case with dynamic positional deformity of the hallux.
    The Journal of foot and ankle surgery: official publication of the American College of Foot and Ankle Surgeons 07/2014; 53(6). DOI:10.1053/j.jfas.2014.04.024 · 0.98 Impact Factor
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    ABSTRACT: Ligament reattachment technique using a suture anchor appears to show satisfactory functional outcomes and mechanical stability compared with conventional bone tunnel technique. This study was prospectively conducted in order to evaluate functional outcomes of modified Brostrom procedures using the suture bridge technique for chronic ankle instability in athletes.
    01/2014; 18(3):108. DOI:10.14193/jkfas.2014.18.3.108
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    ABSTRACT: Four patients with soft tissue defects around the ankle joint were covered with peroneal artery perforator-based propeller flaps. Using color Doppler sonography, the flap was designed by considering the location of the perforator and soft tissue defects. The procedure was then performed by rotating the flap by 180o. Additional skin graft was required in a patient due to partial necrosis, and delayed wound repair was performed in another patient with poor blood circulation at the distal part of the flap. The remaining patients did not have any complications and results were considered excellent. Good outcomes were eventually obtained for all patients.
    01/2014; 18(4):222. DOI:10.14193/jkfas.2014.18.4.222
  • 01/2014; 1(1):59-63. DOI:10.14517/aosm13013
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    ABSTRACT: A painful pseudoarthrosis will develop due to a delay in diagnosis and treatment, and surgical care is required. Treatment of pseudoarthrosis is really difficult because the acromion is a thin flat bone that is difficult to be fixed firmly. A 52-year-old woman with multiple trauma had an acromial fracture that was not detected until it had caused pain after ambulation. Open reduction and internal fixation with a variable angle locking compression plate for distal radius and autogenous iliac bone graft were performed. At nine months after the operation, there was partial tear in the supraspinatus tendon, and arthroscopic repair of the supraspinatus tendon was performed. At nine months after the operation, radiographs showed a complete union. At three months after tendon repair, the patient had excellent function of the shoulder. We have reported a case of a successful treatment of nonunion and pseudoarthrosis of acromial fracture that is difficult to be fixed.
    12/2013; 16(2). DOI:10.5397/CiSE.2013.16.2.130
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    ABSTRACT: Purpose: The purpose of this study was to evaluate the repair integrity and clinical outcomes of delaminated tears following arthroscopic layered suture bridge rotator cuff repair in a prospective fashion. Materials and Methods: A consecutive series of 67 patients with delaminated rotator cuff tears who underwent surgery using the arthroscopic Layered Suture Bridge Technique were followed prospectively. Of 67 shoulders, 26 patients were male and 40 patients were female (one patient had bilateral tears); the mean age was 58.8(40~76) years. The clinical evaluation was performed according to ASES, UCLA, and KSS (Korea Shoulder Scoring System) scores with an average follow up period of 33 months. Repair integrity was estimated using MRI, which was performed six months postoperatively. Results: The average clinical outcome in ASES, UCLA, and KSS scores showed significant improvement at the time of the final follow-up compared to preoperatively, from 50.2 to 92.3, 15 to 31.3, and 54.4 to 90.7, respectively (p
    12/2013; 16(2). DOI:10.5397/CiSE.2013.16.2.84
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    ABSTRACT: The purpose of this study is to investigate the functional and radiologic results of treatment of the old with intertrochanteric fractures by implementation of the proximal femoral nail antirotation (PFNA) with Valgus reduction.
    The Journal of the Korean Orthopaedic Association 01/2013; 48(6):441. DOI:10.4055/jkoa.2013.48.6.441
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    ABSTRACT: Subcutaneous emphysema of lower extremity is a rare disease entity. Crepitation and swelling on physical examination and gas on radiographs raise the concern of infection due to the presence of gas gangrene forming organisms. Therefore, delay of diagnosis and appropriate management can be a major predisposing factor for sepsis and further associated high mortality. We experienced a rare case of subcutaneous emphysema of the right lower extremity after knee arthroscopy; life-threatening infection was ruled out by physical examination and laboratory testing. The patient recovered uneventfully with conservative management. Therefore, we report on this case with a review of current literature.
    The Journal of the Korean Orthopaedic Association 01/2013; 48(6):475. DOI:10.4055/jkoa.2013.48.6.475
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    ABSTRACT: The present prospective, randomized study was conducted to compare the clinical outcomes of the modified Brostrom procedure using single and double suture anchors for chronic lateral ankle instability. A total of 50 patients were followed up for more than 2 years after undergoing the modified Brostrom procedure. Of the 50 procedures, 25 each were performed using single and double suture anchors by 1 surgeon. The Karlsson scale had improved significantly to 89.8 points and 90.6 points in the single and double anchor groups, respectively. Using the Sefton grading system, 23 cases (92%) in the single anchor group and 22 (88%) in the double anchor group achieved satisfactory results. The talar tilt angle and anterior talar translation on stress radiographs using the Telos device had improved significantly to an average of 5.7° and 4.6 mm in the single anchor group and 4.5° and 4.3 mm in the double anchor group, respectively. The double anchor technique was superior with respect to the postoperative talar tilt. The single and double suture anchor techniques produced similar clinical and functional outcomes, with the exception of talar tilt as a reference of mechanical stability. The modified Brostrom procedure using both single and double suture anchors appears to be an effective treatment method for chronic lateral ankle instability.
    The Journal of foot and ankle surgery: official publication of the American College of Foot and Ankle Surgeons 11/2012; 52(1). DOI:10.1053/j.jfas.2012.10.004 · 0.98 Impact Factor
  • Arthroscopy The Journal of Arthroscopic and Related Surgery 09/2012; 28(9):e350-e351. DOI:10.1016/j.arthro.2012.05.511 · 3.19 Impact Factor
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    ABSTRACT: This prospective, randomized study was conducted to compare clinical outcomes of the modified Broström procedure using suture anchor or transosseous suture technique for chronic ankle instability. Forty patients were followed for more than 2 years after modified Broström procedure. Twenty procedures using a suture anchor and 20 procedures using a transosseous suture were performed by one surgeon. The clinical evaluation consisted of the Karlsson scale and the Sefton grading system. Talar tilt and anterior talar translation were measured on anterior and varus stress radiographs. The Karlsson scale had improved significantly to 90.8 points in the suture anchor group, and to 89.2 points in the transosseous suture group. According to Sefton grading system, 18 patients (90%) in suture anchor group and 17 patients (85%) in transosseous suture group achieved satisfactory results. The talar tilt angle and anterior talar translation improved significantly to 5.9 degrees and 4.2 mm in suture anchor group, and to 5.4 degrees and 4.1 mm in transosseous suture group, respectively. No significant differences existed in clinical and functional outcomes between the two techniques for ligament reattachment. Both modified Broström procedures using the suture anchor and transosseous suture seem to be effective treatment methods for chronic lateral ankle instability.
    Foot & Ankle International 06/2012; 33(6):462-8. DOI:10.3113/FAI.2012.0462 · 1.63 Impact Factor
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    ABSTRACT: The recurrent dislocation of hip in adult can be uncommonly induced by neuromuscular disease or dysplasia of hip. But in the case of traumatic dislocation of hip with acetabular fracture, the possibility of recurrent dislocation can be decreased if treated with accurate fixation or traction. We have experienced a case of hip dislocation with comminuted acetabular fracture, which was treated only with soft tissue suture and without fixation because of severity of the acetabular fracture. An inappropriate conservative management was done during the post operation period, eventually result in recurrent dislocation and degeneration of posterior wall and head of femur which resembled bony Bankart lesion of the shoulder. The reduction was not able to be maintained, as a result THRA was done. A year after the operation, good prognosis was found in replaced hip without any recurrent dislocation.
    01/2012; 24(3):250. DOI:10.5371/hp.2012.24.3.250
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    ABSTRACT: For decision making in the management of vertebral fractures such as operation or not, sagittal parameters like Cobb angle and wedge compression ratio are important. Plain radiography had been the only image tool for measuring such parameters until 3D computed tomography (CT) became popular recently. In this study, we investigated the measurement discrepancy between plain radiography and 3D CT.
    The Journal of the Korean Orthopaedic Association 01/2012; 47(3):198. DOI:10.4055/jkoa.2012.47.3.198
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    ABSTRACT: We aimed to obtain a reference for the optimal rotational alignment of femoral component in Koreans through an analysis of grand piano sign observed during total knee arthroplasty (TKA) and the angle between the clinical transepicondylar axis and the posterior condylar axis (TEA-PCA angle), by computed tomography.
    The Journal of the Korean Orthopaedic Association 01/2012; 47(6):432. DOI:10.4055/jkoa.2012.47.6.432
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    ABSTRACT: To evaluate the clinical outcomes of operative treatment using a transolecranon approach with a dual locking plate for unstable intercondylar fractures of the distal humerus.
    01/2012; 25(2):129. DOI:10.12671/jkfs.2012.25.2.129
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    ABSTRACT: Purpose: This study was performed to assess the usefulness of non-anatomical repair for irreparable large and massive rotator cuff tears by the arthroscopic margin convergence technique. Materials and Methods: Twenty-two patients were followed up more than 1 year after non-anatomical repair for irreparable large and massive rotator cuff tears using the arthroscopic margin convergence technique. The clinical evaluation was performed according to the KSS score, the UCLA score and the Visual analogue scale (VAS). The measurement of the acromio-humeral distance was performed using the shoulder anterior-posterior radiographs. The measurement of fatty degeneration and the healing status was performed using the shoulder MRI after 6 months. Results: Among twenty-two patients, follow up MRI was performed in eleven cases. Three cases were well healed, four cases were partial healed and another four cases were re-torn. The KSS and UCLA scores had significantly improved from a preoperative average of 45.08.014 and 10.82.302 points to 77.110.151 and 30.01.521 points, respectively, and the pain VAS had decreased from a preoperative average of 7.70.616 points to 3.01.021 points at the last follow up. Less favorable results were obtained when the patient had a grade of fatty degeneration higher than grade 3 on the preoperative MRI. Conclusion: Non-anatomical repair for irreparable large and massive rotator cuff tears by the arthroscopic margin convergence technique showed good functional results. It seems to be one of the effective treatment methods for irreparable large and massive rotator cuff tears.
    06/2011; 14(1). DOI:10.5397/CiSE.2011.14.1.046
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    ABSTRACT: a retrospective study of surgically managed patients. to evaluate the results of posterior stabilization of thoracolumbar fracture using nonfusion method followed by the removal of metal implants within an appropriate period. Changes in the sagittal alignment and the restoration of segmental motion were also investigated. posterior fusion using a transpedicular screw system remains the treatment of choice for the management of thoracolumbar and lumbar fractures. However, fusion methods result in the permanent loss of segmental motion. If both stability and motion could be achieved, functional results would improve considerably. twenty-three patients under 40 years of age (mean, 28.0 years) with thoracolumbar or lumbar spine fractures were managed by this nonfusion method. Implants were removed at a mean 9.7 months after initial fracture fixation, and patients were observed for more than 18 months. Sagittal alignments of metal fixed segments, heights of vertebral bodies, recovered motion ranges in flexion/extension, right-left bending view were measured radiologically. Clinical aspects, such as gross deformities and functional abilities, were also investigated. heights of fractured bodies were well maintained at final follow-up. Initial mean sagittal angle was 17.2° kyphosis, which became 2.8° lordosis after fixation of fractures. This angle was 1.7° kyphosis just before implant removal, 2.4° kyphosis just after implant removal, and showed 5.9° kyphosis at final follow-up. Mean segmental motion was 14.2° in the sagittal plane and 13.1° in the coronal plane at final follow-up. Most patients were satisfied with final gross appearance and functional outcome. the described nonfusion method appears to be effective in achieving favorable sagittal alignment and regaining motions of fixed segments. The present study suggests that the nonfusion method is one of the most effective methods for managing thoracolumbar fractures, especially in young active people.
    Spine 01/2011; 36(2):170-6. DOI:10.1097/BRS.0b013e3181cd59d1 · 2.45 Impact Factor
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    ABSTRACT: After shoulder arthroscopy via general anesthesia, most patients complain of severe pain during the early post operative period. In this study, the efficacy of pain control during the early post operative period with interscalene block anesthesia for shoulder arthroscopy was investigated and compared with general anesthesia.
    The Journal of the Korean Orthopaedic Association 01/2011; 46(4):288. DOI:10.4055/jkoa.2011.46.4.288