Journal of Musculoskeletal Trauma

Jong Kuk Ahn

7 Articles

Long Term Results of Retrograde Nailing in Adult Femoral Shaft Fractures: Yerl Bo Sung, Soo Chul Park, Jong Kuk Ahn, Jae Kwang Yum, Hyung Jin Chung, Jin Ho Kim, Seung Taek Song, Yong Taek Han; J Korean Soc Fract 2002;15(3):356-362. Published online July 31, 2002; DOI: https://doi.org/10.12671/jksf.2002.15.3.356

PURPOSE
Antegrade intramedullary nailing of the femur is effective method of treatment for patients with femoral shaft fractures. But retrograde IM nailing is another effective method, especially in femoral shaft fractures concomitant with ipsilateral femoral neck, intertrochanteric fractures, acetabular fracture, multiple fracture and obesity, pregnancy, traumatic arthrotomy of the knee joint, bilateral femur fractures, and floating knee injuries are also indicated. The purpose of this study is to verify the effectiveness of retrograde IM nailing after long-term follow-up by retrospective evaluation.
MATERIALS AND METHODS
A retrospective review of the medical charts and X-rays about 37 patients who were operated by retrograde nailing and all patients were minimally followed up about 2 years. Results were evaluated radiologically for screw breakage, nail migration, nonunion and clinically for knee ROM limitation, infection.
RESULTS
The results were as follows; 1) union was achieved at on average of 17 weeks. 2) Full range of knee motion was gained in 33/37 cases. Knee-stiffness occurred in 4 cases, Severity of initial trauma might affect such results but not, retrograde nailing 3) 2 complications were found nonunion and delayed union. 4) There were not postoperative infection and femoral shortening. There were distal screw breakage in 4 cases but, the others were not migrated.
CONCLUSION
Retrograde IM nailing of femoral fracture is an effective method in selected cases such as ipsilateral femoral neck fractures, floating knees, post-TKRA femoral fracture and so on. If retrograde IM nailing is operated by skillful surgeon and appled to absolute indication, the result is no significant difference of antegrade IM nail such as bone union, nonunion and postoperative infection. Nevertheless, operation time is shorter and blood loss lesser. Significant knee problems related to this technique could not be identified for 2 years followed up.

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Factors Affecting the Period of Bone Union When Treating Femoral Fractures with a Retrograde Intramedullary Nail
Bum-Soo Kim, Seong-Tae Kim, Seungyup Shin, Seong Man Jeon
Journal of the Korean Orthopaedic Association.2021; 56(4): 326. CrossRef
Analysis of Risk Factors for Nonunion after Intramedullary Nailing of Femoral Shaft Fracture in Adult
Yong-Woon Shin, Yerl-Bo Sung, Jeong Yoon Choi, Minkyu Kim
Journal of the Korean Fracture Society.2011; 24(4): 313. CrossRef

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Results of Treatment of Fracture-Dislocations of Elbow: Dong Soo Kim, Soon Ho Hwang, Chil Soo Kwon, Jong Kuk Ahn, Byung Hyun Jung, Yerl Bo Sung, Jae Kwang Yum, Hyung Jin Chung; J Korean Soc Fract 2000;13(1):178-185. Published online January 31, 2000; DOI: https://doi.org/10.12671/jksf.2000.13.1.178

Abstract PDF: PURPOSE
: This study analyzed clinical and biomechanical data from patients with elbow fracture dislocation to correlate long-term objective result with the specific injury type and treatment rendered. This can provide a basis for the management of this difficult injuries.
MATERIALS AND METHODS
: Fifteen patients with elbow dislocation were studied from October, 1992 to October, 1997 in Sang-Gye Paik Hospital. The average duration of follow up was 4.2 years.
RESULTS
: On the basis of an objective functional grading score that included elements of pain, motion, strength, and stability, the results were excellent in five(33%), good in five(33%), fair in one(7%), poor in four(27%). Prolonged immobilization greater than four weeks was associated with poor results. The results were closely related to the combined injuries and duration of immobilization. In case of radial head fractures, the best result was obtained in patients with Mason type II fractures treated by open reduction and internal fixation using Herbert screw and early complete radial head excision. SUMMARY AND CONCLUSION : The most common combined injury is radial head fracture. Early complete radial head excision and encouraging early ROM had more satisfactory result than delayed radial head excision or internal Fixation for Mason type III fracture.

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The Results of the Percutaneous K-wire Fixation for the Supracondylar Fractures of the Humerus in Children: Chil Soo Kwon, Jong Kuk Ahn, Byung Hyun Jeong, Jin Chung, Ho Cheol Rhee; J Korean Soc Fract 1999;12(1):187-193. Published online January 31, 1999; DOI: https://doi.org/10.12671/jksf.1999.12.1.187

Abstract PDF: The cases of 160 patients who had a displaced supracondylar fracture of the humerus were reviewed retrospectively. According to the Flynn's criteria, the results of treatment were excellent 33%, good 53%, fair 10%, poor 4%. No neurovascular complication was appeared. In two cases, cubitus varus deformity was appeared to be related with incorrect reduction. We believe that percutaneous k-wire fixation is excellent method in treatment of the displaced supracondylar fractures in children. There was no significant difference of clinical results among methods of percutaneous K-wire fixation but lateral 2 and medial 1 cross pinning has advantages : easy technique in insertion of lateral 2 pins, biomechanical stability and removal of medial pin in the irritation of ulna nerve without significant influence of stability.

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A Clinical Study of the Tibial Pilon Fractures: Chil Soo Kwon, Jong Kuk Ahn, Jin Hyok Kim, Yerl Bo Sung, Hyung Jin Chung; J Korean Soc Fract 1997;10(2):338-345. Published online April 30, 1997; DOI: https://doi.org/10.12671/jksf.1997.10.2.338

Abstract PDF: The pilon fracture result from axial compression and rotational forces causing variable degrees of metaphyseal disruption, articular damage, and malleolar displacement. It is managements are closed reduction and plaster immobilization, skeletal traction, fibular stabilization alone, limited open reduction and extemal fixation, primary arthrodesis, and even immediate amputation. Recently limited open reduction and external fixation has been proved to provide good clinical results for the severely comminuted or open pilon fractures. Authors reviewed 20 cases of the pilon fractures. Among them 10 cases were treated with limited open reduction and external fixation from October 1989 to January 1994. The results were as follows : 1. Age distribution was from 14 years to 77 years(mean ; 47 years). 2. Of the 20 cases, male were 14, and female were 6. 3. The cause of injury were tracffic accident in 10 cases, slip down in 6 and fall from a height in 4. 4. The most frequent type of fractures was type III(12 cases : 60%) according to Ruedi and Allgower classification. 5. Limited open reduction and external fixation(10 cases) has shown better results than classic open recduction and internal fixation for severely comminuted or open pilon fractures.

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Fracture of the Distal Radius with Ulnar Nerve Palsy: Chil Soo Kwon, Jong Kuk Ahn, Jin Hyok Kim, Yerl Bo Sung, Jin Ho Cho; J Korean Soc Fract 1997;10(1):171-174. Published online January 31, 1997; DOI: https://doi.org/10.12671/jksf.1997.10.1.171

Abstract PDF

There are several complications of distal radiug fracture such as median nerve injury, malunion nonunion, rupture of EPL, and ischemic contracture. Lesion of ulnar nerve as a complication of fracture of the distal radius are very rare. The authors report 1 case of the distal radius fracture with ulnar nerve palsy. The electromyography & nerve-conduction studies showed incomplete axonotmesis of ulnar nerve on 1 month following injury. A second electromyography & nerve-conduction study two months after injury showed complete recovery of nerve function.

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Ulnar Nerve Palsy Following Closed Fracture of the Distal Radius: A Report of 2 Cases
Chul-Hyun Cho, Chul-Hyung Kang, Jae-Hoon Jung
Clinics in Orthopedic Surgery.2010; 2(1): 55. CrossRef

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Interlocking Intramedullary Nailing of Femoral Shaft Fractures in Adolescents: Chil Soo Kwon, Jong Kuk Ahn, Jin Hyok Kim, Byung Hyun Jung, Yerl Bo Sung, Hyung Jin Jung, Jong Deuk Rha, Woo Chun Lee, Hyun Soo Park, Myung Ho Lee, Bu Maan Kim; J Korean Soc Fract 1996;9(4):914-920. Published online October 31, 1996; DOI: https://doi.org/10.12671/jksf.1996.9.4.914

Abstract PDF: Although treatment of femoral shaft fractures by traction and casting satisfactory in young children, it is less useful in obtaining and maintaining satisfactory alignment in adolescent patients. Residual angulation, malrotation. and leg length inequality is well documented. The options for surgical treatment of femoral shaft fractures in adolescents include extemal fixation, plate fixation, and intramedullary nailing. Surgical treatments carry the-risks of growth plate damage and infection, but these risks are very low. Recently, it is generally anepted that adolescent femoral shaft fractures are preferably treated by intramedullary nailing with care taken to avoid damaging the distal femoral physis. The authors experienced 9 femoral shaft fractures in 8 patients treated with interlocking intramedullary nails from August 1989 to May 1994, and followed up for more than 18 months(range from 18 to 45 months). The results were as follows: 1. There were 6 cases in male, 2 cases in female. Average age at the time of injury was 13 years(range, 11-14). 2. All fractures were united, and the nails were removed at an average 13.3 months after operation: no refracture or femoral neck fracture has since occured. 3. None had angular or rotational malunions, infection and avascular necrosis of femoral head. The average leg-length discrepancy at the last follow-up was 0.5cm(range, 0-1.0cm) and all were clinically acceptable. Coxa valga due to premature closure of trochanteric apophysis was not found. The average femoral neck-shaft angle was 133(130~138) at the last follow-up. So, interlocking intramedullary nailing is a reasonable alternative for the treatment of femoral shaft fracture in adolescents.

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Treatment of humerus shaft fratures using hanging arm cast withplastic cast: Goang Yoon Seo, Jong Kuk Ahn, Yong Wook Kim, Jin Hyug Kim, Jeong Han Rhee; J Korean Soc Fract 1991;4(1):8-14. Published online May 31, 1991; DOI: https://doi.org/10.12671/jksf.1991.4.1.8

Abstract PDF

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Periprosthetic Fracture after Proximal Humeral Intramedullary Nail, Treated by Functional Bracing - A Case Report -
Jae-Hyuk Shin, Ho-Guen Chang, Young-Woo Kim, Nam-Kyou Rhee, Yong-Bok Park, Yong-Kuk Kim
Journal of the Korean Fracture Society.2011; 24(2): 185. CrossRef

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