Byung-Ki Cho

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

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Publications (33)11.83 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: Although the modified Brostrom procedure has had excellent clinical results, postoperative complications such as skin irritation by suture material and problematic scar formation occur. This prospective study was performed to evaluate the clinical outcomes of mini-open ligament augmentation (internal brace technique) using suture tape for chronic ankle instability in a select cohort of patients. Thirty-four young female patients with less than 70 kg of body weight were followed for more than 2 years after suture tape augmentation for lateral ankle instability. The clinical evaluation consisted of the Foot and Ankle Outcome Score (FAOS), Foot and Ankle Ability Measure (FAAM) score, Sefton grading system, and the period to return to various activities. Measurement of talar tilt angle and anterior talar translation was obtained from stress radiographs to evaluate the longevity of mechanical ankle stability. FAOS and FAAM scores had significantly improved to 92.5 points at final follow-up (P < .001). According to the Sefton grading, 31 cases (91.2%) achieved satisfactory functional results. The period to return to exercise was on average 10.2 weeks for jogging and 9.6 weeks for walking on uneven ground. The average subjective satisfaction score of patients was 93.8 points, and satisfaction with the scar was 98.5 points. Talar tilt angle and anterior talar translation had significantly improved to an average of 4.5 degrees and 4.1 mm, respectively, at final follow-up (P < .001). There were no complications such as skin irritation and wound infection, except for 1 case of chronic inflammation. Minimally invasive suture tape augmentation seems to be an effective alternative for young women with chronic ankle instability. Because there is a possibility of progressive elongation over time, the longevity of mechanical ankle stability and the proper indication for using the internal brace technique should be addressed in future studies. Level IV, case series study. © The Author(s) 2015.
    06/2015; DOI:10.1177/1071100715592217
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    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: Background: 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. Methods: Forty-five amateur athletes under 30 years of age were followed for more than 2 years. Twenty-four procedures with the suture anchor technique and 21 procedures with the suture bridge technique were performed by one surgeon. The functional evaluation consisted of the American Orthopaedic Foot & Ankle Society (AOFAS) score, Foot and Ankle Outcome Score (FAOS), Karlsson score, Sefton grading system, and the period to return to various forms of exercise (jogging, spurt running, jumping, one leg standing for >1 minute, walking on uneven ground, and going down stairs). Measurement of talar tilt angle and anterior talar translation was obtained from stress radiographs to evaluate mechanical stability. Results: There were no significant differences on AOFAS score, FAOS, Karlsson score, Sefton grade, and stress radiographs. There were no significant differences on the return to exercises, except for jumping. As the most common complication, there were 3 cases of skin irritation by suture materials in the suture anchor group and 2 cases of intraoperative breakage of the suture anchor in suture bridge group. Conclusions: Both ligament reattachment techniques using suture anchors showed similar functional outcomes. Considering the additional medical expenses incurred by more suture anchors, the modified Brostrom procedure using the suture bridge technique had low cost-effectiveness. Proper indication and clinical usefulness of suture bridge technique for chronic ankle instability will be addressed in further studies.
    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: Surgical treatment for the pediatric anterior cruciate ligament (ACL) avulsion fracture consists of arthroscopic treatment and open surgery. Recently, arthroscopic treatment has been commonly performed rather than open surgery because of less post-operative pain and faster rehabilitation. In arthroscopic treatment, K-wire and cannulated cancellous screws are the main instruments used for fixation of avulsion fracture, but these instruments have the risk of causing damage to the growth plate and an additional surgery to remove the fixation is needed. In spite of the technical difficulty, the suture anchor is used to overcome the risk of damage to the growth plate and the need for an additional surgery. The authors report good results using bio-absorbable suture anchor in arthroscopic treatment for pediatric ACL avulsion fracture.
    The Journal of the Korean Orthopaedic Association 12/2011; 46(6):512. DOI:10.4055/jkoa.2011.46.6.512
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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 08/2011; 46(4):288. DOI:10.4055/jkoa.2011.46.4.288