Journal of Musculoskeletal Trauma

Hyung Bin Park

7 Articles

Two-Stage Reconstruction of Infected Nonunion of Long Bones using Antibiotics-Impregnated Cement Beads: Se Hyun Cho, Soon Taek Jeong, Hyung Bin Park, Sun Chul Hwang, Yong Chan Ha, In Hwan Hwang; J Korean Fract Soc 2004;17(4):395-400. Published online October 31, 2004; DOI: https://doi.org/10.12671/jkfs.2004.17.4.395

PURPOSE
To evaluate treatment results between internal and external fixation groups in two-stage reconstruction of infected nonunion of long bones using antibiotics-impregnated cement beads.
MATERIALS AND METHODS
In the first stage, preexisting hardwares were removed and radical debridement was done. The dead space was filled with antibiotics -impregnated cement beads and the nonunion site was immobilized by external fixation, cast or skeletal traction. In the second stage, all cases were divided into two groups; the nonunion was fixed by internal fixation in group I versus external fixation in group II. The intervening period between the first and second stage was average 8.7 weeks (range, 3~23 weeks).
RESULTS
The follow-up period was average 45 months (range, 16~71 months). Infection control and bone union were achieved in all 13 cases of group I. Infection recurred in two of 28 cases in group II, one underwent above-knee amputation and the other case was lost in follow-up. The mean number of supportive operations including repeated curettage, augmentation and change of infected pins, angular correction, and soft tissue flap was average 2 and 6.2 times respectively in group I and group II. Bony union period was average 19.3 and 23.1 weeks in each group. According to Paley's classification, group I was similar to group II in bony and functional result (p>0.05).
CONCLUSION
Antibiotics-impregnated cement beads provided positive effect on infection control. Internal fixation group showed less number of additional operations and earlier bony union than external fixation group.

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Treatment of Infected Nonunion
Sang-Ho Ha
Journal of the Korean Fracture Society.2007; 20(2): 206. CrossRef

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Screw breakage in tibial interlocking nailing: Hyung Bin Park, Bun Jung Kang, Hae Ryong Song, Kyong Hoi Koo, Soon Taek Jeong, Se Hyun Cho; J Korean Soc Fract 2002;15(4):483-488. Published online October 31, 2002; DOI: https://doi.org/10.12671/jksf.2002.15.4.483

Abstract PDF

PURPOSE
The aims of this study were to investigate the prevalence and the causes of screw breakage in tibia nailing.
MATERIALS AND METHODS
Between 1995 and 2000, eighty-two tibial diaphyseal fractures were treated with interlocking nails. The loss of follow-up was 7 cases. We retrospectively reviewed seventy-five cases. We investigated the rate and location of metal failure and evaluated the fracture pattern, the presence of distraction after nailing and union abnormality.
RESULTS
Screw breakage was identified in seven cases (9.3%) and most frequently occurred on the second proximal locking screw. Screw breakage occurred in AO type B or C type fractures, fracture site distraction after nailing, open fracture, delayed union and nonunion.
CONCLUSION
The main cause of screw breakage is unstable bone to bone contact on the fracture site caused by comminution or distraction. The open fracture, delayed union, and nonunion also contributing factors for screw breakage. For preventing screw breakage, it is necessary to avoid fracture site distraction and delay full weight bearing in cases having unstable fracture site contact.

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Clinical Outcomes of the Tibia Segmental Fractures Treated by Intramedullary Nail Using Various Reduction Techniques
Oog-Jin Shon, Ji-Hoon Shin, Chul-Wung Ha
Journal of the Korean Fracture Society.2013; 26(1): 50. CrossRef

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The Effect of Low Intensity Ultrasound on Distraction Osteogenesis in the Rabbit Femur: Hyung Bin Park, Hae Ryoung Song, Kyung Hoi Koo, Soon Taek Jeong, Bun Jung Kang, Se Hyun Cho; J Korean Soc Fract 2002;15(2):159-165. Published online April 30, 2002; DOI: https://doi.org/10.12671/jksf.2002.15.2.159

Abstract PDF: PURPOSE
The effects of ultrasound on mechanical properties of the callus in distraction osteogenesis was assessed in this study. MATERIAL AND METHOD: Forty mature New Zealand white rabbits were divided into two groups (ultrasound group and control group). A midshaft femoral osteotomy was made and fixed with a small external fixator. After a latent period of a week, lengthening was performed at the rate of 1mm a day for 2 weeks. Low intensity ultrasound (EXOGEN inc, Piscataway, NJ U.S.A) was applied to the operated limb for 20 minutes a day in the ultrasound group, while the control group waited for natural maturation of the callus. The bone mineral density and mechanical properties such as ultimate load, ultimate stress, deflection at ultimate load, ultimate stiffness and energy absorption at ultimate load were measured and analyzed.
RESULT
The bone mineral density, the area of the callus, ultimate load, ultimate stress and energy absorption at ultimate load were not significantly different between the two groups (p>0.05). The ultimate stiffness in the ultrasound group was significantly higher than those of the control group (p<0.01). The deflection at ultimate load in the ultrasound group was significantly lower than those of the control group (p<0.01).
CONCLUSION
The low density ultrasound has a positive effect on the mechanical properties of the distracted callus in the rabbit femoral model in terms of the ultimate stiffness and the deflection at ultimate load.

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The Effect of Safflower Seed or Matairesinol on Spontaneous Bone Formation in Surgically Induced Bone Defect in Young Rabbit: Hae Ryong Song, Do Kyung Ra, Gon Sup Kim, Ki Churl Chang, Jae Min Hwang, Seong Chan Yeon, Hyung Bin Park, Sang Won Choi; J Korean Soc Fract 2002;15(2):97-105. Published online April 30, 2002; DOI: https://doi.org/10.12671/jksf.2002.15.2.97

Abstract PDF: PURPOSE
To investigate the effect of defatted safflower seed or matairesinol on spontaneous bone formation in surgically induced bone defects in young rabbits MATERIALS AND METHODS: Bone defects(20% of original femoral length) were created at the midshaft of the femur in 52 young rabbits and stabilized with external fixation. The periosteum was preserved. Fifty-two rabbits were divided into four groups as follows; the group I fed on safflower seed powders(30%) and normal diet(70%), the group II on matairesinol (5%) and normal diet(95%), the group III on normal diet(100%) with intravenous injection of matairesinol, the group IV on normal diet(100%). Radiographs were taken weekly to evaluate the bone regeneration and union time. Biomechanical testing on the new bone formation area was performed to measure bending stiffness. The area of new bone formation was scanned by quantitative computed tomography to measure bone mineral density(BMD).
RESULT
The mean union time(weeks) was 7.2 in the group I, 8.6 in the group II, 8.8 in the group III, and 8.5 in the group IV and was significantly different between the group I and the other groups(p<0.05). The BMD and bone strength of the callus were compared between the group I and the group IV. The mean BMD was 310.45 +/-49.58 g/mm2 in the group I and 291.16 +/-55.79 g/mm2 in the group and there was significant difference(p<0.05). The mean bending stiffness was 415.33 +/-137.18 N/mm in the group I and 358.75 +/-107.32 N/mm in the group IV and there was significant difference(p<0.05).
CONCLUSION
The diet with safflower seed powder was effective for decreasing union time and increasing bone strength of the callus formed at the bone defect whereas the diet or injection with matairesinol was not effective. More experimental studies are necessary to prove the effect of matairesinol on the callus.

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Triradiate Approach in Surgical Treatment of Complex Fracture of Acetabulum: Kang Il Kim, Kyung Hoi Koo, Bun Joong Kang, Hyung Bin Park, Sun Chul Hwang, Soon Taek Jeong, Hae Ryong Song, Se Hyun Cho; J Korean Soc Fract 2001;14(4):616-622. Published online October 31, 2001; DOI: https://doi.org/10.12671/jksf.2001.14.4.616

Abstract PDF: PURPOSE
To determine the advantages of triradiate approach in complex acetabular fractures, the results were reviewed for 24 patients who had open reduction and internal fixation of complex acetabular fractures with a triradiate approach.
MATERIALS AND METHODS
Twenty four patients were followed for a mean of 3 years after the operation. All patients with complex fractures of the acetabulum were treated with open reduction and internal fixation using Y-shaped triradiate incision, osteotomy of the greater trochanter, and arthrotomy of the hip joint. In 13 patients the fracture was fixed with reconstruction plates and in I 1 patients the fracture was fixed with the plates and wires.
RESULTS
All fractures united and no patient required subsequent total hip replacement arthroplasty. Four patients had heterotopic ossification without serious limitation of motion of the hip and one patient had grade IV lesion as defined by Brooker et al, which limited motion of the hip enough to impair function. Six patients showed posttraumatic arthritis at the latest radiograph. The overall clinical result was excellent for 7 hips, good for 13, and fair for 4 as defined by d' Aubigne and Postel. The radiological result was excellent for 13 hips, and good for 6 as defined by Matta. One femoral head necrosis was observed at the latest follow-up.
CONCLUSION
A triradiate approach provides a good extra and intraarticular access to complex fracture of the acetabulum, which facilitates an accurate reduction, rigid fixation, removal of loose osteochondral fragments and management of labial injury, without increased morbidity of the hip joint.

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Two Stage Treatment of Infected Nonunion of Femur with Antibiotics Impregnated Cement Beads and External Fixator: Hyung Bin Park, Yeon Chen Jung, Hae Ryong Song; J Korean Soc Fract 2000;13(4):817-824. Published online October 31, 2000; DOI: https://doi.org/10.12671/jksf.2000.13.4.817

Abstract PDF: PURPOSE
The purpose of this study was to find out the treatment efficiency of two stage osteosynthesis with antibiotic cement beads and external skeletal fixation for infected nonunion of femur.
MATERIALS AND METHODS
In the first stage, radical debridement was performed. The soft tissue and bony defects were filled with antibiotics impregnated cement beads and the nonunion site was stabilized with external skeletal fixation. In the second stage, the debrided nonunion site was repaired with bone grafting. The intervening time between the first and second stages of treatment was 4 to 6 weeks (average 5.4 weeks). The bone defects ranged from 0.5 to 14cm, Autogeneous iliac cancellous bone grafting was performed in 17 patients and microvascularized fibular graft was performed in 5 patients.
RESULTS
The follow-up period was average 45 months (range, 27-62 months). Infection control and bone union were achieved in all 22 cases. Postoperative infection after the second-staged bone grafting occurred in one patient. This recurred case was treated with repeated two staged operation. Even though aggressive physical theraphy was done, all patients had relevant knee flexion deficits. 14 patients were achieved more than 100 degrees of knee flexion, but 8 patients had less than 80 degrees of range of motion.
CONCLUSION
We have found that two-stage treatment with antibiotic beads local therapy, external skeletal fixation, and staged bone grafting is an acceptable treatment modality for the management of infected femoral nonunion. It results in rapid recovery from osteomyelitis and a predictable recovery from nonunion.

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fracture and Dislocation of the Elbow Treated with Compass Elbow Hinge: Hyung Bin Park, Hae Ryong song; J Korean Soc Fract 1998;11(3):709-717. Published online July 31, 1998; DOI: https://doi.org/10.12671/jksf.1998.11.3.709

Abstract PDF: Post-traumatic elbow stiffness is a common and disastrous complication after acute elbow injury. prolonged immobilization universally leads to stiffness. Stable fixation and controlled, gradual increase in range of motion is prferred for the treatment of comminuted intraarticular fracture and acute unstable dislocation of elbow. In comminuted intraarticular fracture of elbow, the Compass Elbow Hinge provides additional stability for fixation devices used to fix intraarticular fractures and simultaneously permits measured and controlled joint mobilization. In instability after reduction of elbow dislocation, the Compass Elbow Hinge helps to protect the soft tissue from undesirable stresses during healing. The purpose of this study is to evaluate the results of the Compass Elbow Hinge in maintaining and restoring mobility in the acutely injured elbow. The authors reviewed 11 consecutive patients who had the Compass Elbow Hinge applied for acute elbow instability. The average duration of application was 7 weeks. Follow-up averaged 18 months, adn motion averaged 96 degrees in flexion/extension plane. Comcentric stability was restored in all but one case, one case of resubluxation required reconstruction of medial collateral ligament, following which, the elbow was stable. According to the Mayo elbow performance index there were 8 excellent, 2 good and 1 fair result. The Compass Elbow Hinge helps to facilitate management of complex osseo-ligamentous injuries of the elbow. It decreases the incidence of sequelae such as stiffness and instability by permitting early mobilization through a kinematically normal range of motion without jeopardizing soft tissue healing.

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