• Journal of radiological science and technology
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• v.33 no.2
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• pp.93-96
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• 2010

This study evaluates usefulness of the developed assistant device by taking projection of patellofemoral joint in emergency patients who were doubt posterior cruciate ligament injury in knee joint. The subjects of experiment were patients who visited Eul-Ji University Hospital due to knee injury from January 2006 to December 2006. Seventeen patients, who took the Knee post stress view, Knee merchant view, Knee Seo's view to use assistant device and Knee MRI. To make assistant device of $170{\times}50{\times}70\;cm$, we evaluated its usefulness by measuring posterior dislocation of tibia. Seo's view is more accurate to make judgment of posterior cruciate ligament injury than original knee post stress view. Interval difference of posterior dislocation of original knee post stress view is $6.17{\pm}3.04$ and Seo's view is $8.74{\pm}4.47$. The results show injury of patellofemoral joint, vertical fracture of patella and posterior cruciate ligament injury by taking a projection using Seo's view. Therefore, it is useful to take projection earlier than talometer and MRI in emergency patients who were doubt posterior cruciate ligament injury in knee joint.

• Proceedings of the KSME Conference
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• 2008.11a
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• pp.1461-1466
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• 2008

In the case of Posterior Cruciate Ligament (PCL), the most frequent mechanism is the dashboard injury, which is directly pressurized to the anterior of the proximal tibia in the state of the knee hyperflexion. The PCL associated ligament damage happens when the posterior injury, the varus, the valgus, the hyperextension and the severe vagus torque are out of the critical value of PCL. After the successful operation cases of Anterior Cruciate Ligament (ACL) reconstruction using the allograft were informed from 1986, a number of results kept over the maximum 10 years were reported. Unfortunately, PCL reconstruction are crowded the surgery techniques such as the graft, the tibia fixing method, the fixation device, the location of the femoral tunnel, the number of the graft bundles and PCL reconstruction to access to the stability of the normal joint is being developed. Therefore, this study is the basic research of these above facts. The current transtibial tunnel surgery using the cadaveric Achilles tendon grafts is chosen for the various PCL reconstruction. The initial extension of the Achilles tendon by the fixing device and its location under the cyclic loading, were observed.

• Journal of Korean Foot and Ankle Society
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• v.6 no.2
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• pp.178-180
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• 2002

Authors report one patient of concurrent fracture of medial malleolus and rupture of deltoid ligament. To the author's knowledge, combined failure of both structures has not been previously reported in Korea. Injury mechanism was classified into pronation -abduction type according to Lauge-Hansen classification. Plain radiograph revealed trimalleolar fracture and posterior ankle dislocation. MRI showed complete rupture of both deep and superficial layer of the deltoid ligament. In conclusion, therefore, concurrent rupture of deltoid ligament should be considered for the surgical treatment in trimalleolar ankle fracture with posterior ankle dislocation resulted from pronation-adduction injury.

• 대한정형외과스포츠의학회:학술대회논문집
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• 2003.11a
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• pp.9-13
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• 2003

• Journal of the Korean Arthroscopy Society
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• v.12 no.1
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• pp.24-31
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• 2008

Purpose: We purposed to analyze the incidence and the patterns of the injuries associated with anterior cruciate ligament(ACL) tears. Materials and Methods: We retrospectively reviewed 547 knees that had undergone ACL reconstructions and compared the associated injuries according to the time of injury(acute vs. chronic), the cause of injury(sports vs. non-sports) and the type of sports. Results: Medial collateral ligament(MCL) injury and bone contusion were more in acute injury group less than 3 months after trauma(p=0.001, 0.019) and the injuries of medial or lateral meniscus were more in chronic injury group more than 3 months after trauma(p=0.014, 0.029). The trochlea in acute injury group(p=0.027) and the medial femoral condyle in chronic injury group(p=0.011) had higher incidence of chondral injury. Grade I, II chondral injury was frequent in acute injury group(p=0.016) and grade III, IV chondral injury was frequent in chronic injury group(p=0.017). Lateral meniscus injury was frequent in sports injury group(P=0.035). Medial collateral ligament injury was frequent in ski(P=0.005), and chondral injury was in gymnastics(P=0.017). Conclusions: The incidences of medial and lateral meniscus tears and grade III, IV chondral defects were high in chronic injury group. According to the causes of the tears and the types of sports, some differences in the incidence and pattern of associated injuries were found.

• Journal of Korean Medicine Rehabilitation
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• v.21 no.4
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• pp.257-267
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• 2011

Objectives: The purpose of this study is to evaluate the effect of the burning acupuncture therapy and exercise therapy on the internal derangement of knee with patella tendon and posterior cruciate ligament injury. Methods: Burning acupuncture therapy was administered three times and exercise therapy was administered during 4 weeks. The improvement of clinical symptom was evaluated by VAS(visual analogue scale) and KOOS(knee injury and osteoarthritis outcome score). Results: After treatment, the patient's VAS score was reduced to 0 pant. The KOOS score of pain, symptom, ADL, sport/rec, QOL(quality of life) improved from 28 to 75, from 36 to 71, from 22 to 65, from 0 to 15, from 25 to 38 respectively. Conclusions: Burning acupuncture therapy and exercise therapy fer internal derangement of knee with patella tendon and posterior cruciate ligament injury was effective. Although this case presented valuable result, further research is encouraged to confirm the effectiveness of this treatment with large number of patient.

• Journal of Veterinary Clinics
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• v.16 no.2
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• pp.497-500
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• 1999

A 4 years old male mixed breed dog, which weighed 25.5 kg, referred to Veterinary Teaching Hospital at College of Veterinary Medicine in Chonnam National University, because of chronic hindleg lameness. Click sound by flexion and extension of stifle joint, positive reaction by cranial drawer movement, fat pad sign and tibial position in cranial drawer position on the lateral radiographic view, medial patellar luxation (grade II), and lameness score 2.5 at standing and 2 at walking in right hindleg were showed. Under general anesthesia with enflurane, after medial arthrotomy, it was performed to remove remnants of cranial cruciate ligament and torn medial menisci and joint closed. In modified retinacular imbrication technique, one lateral fabellar/tuberosity suture, one medial fabellar/tuberosity suture, and one imbrication suture adjacent to the patella were placed. At 9 days after operation, lameness score 0 was observed and general condition was excellent.

• Journal of the Korean Arthroscopy Society
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• v.1 no.1
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• pp.41-46
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• 1997

The natural history of the anterior cruciate ligament(ACL)-deficient knee remains controversial. although numerous investigation have tried to ascertain the course that the knee would follow once the ACL has lost functional integrity. An extensive review of the literature performed according to symptoms. physical examinations, associated surrounding tissue injuries. returns to activity level and radiological changes in the knee joint. An active individual with a non-functioning ACL was susceptible to injury to the menisci and deteriorate the articular cartilage, followed radiographic changes. An activity levels in general also changed after injury. The most common symptom was pain. But instability varied in these individuals. Conclusively we believe that all these factors will eventually, if not initially, result in a symptomatic knee. which will result in significant limitations to the individual's desired level. So we recommend an aggressive approach in person who desired to return to a relatively active life style in young person as well as in middle aged individuals who have significant symptomatic ACL deficient knee.

• Advances in nano research
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• v.13 no.3
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• pp.247-257
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• 2022

Extraordinary properties of nanocomposites make them a primary replacement for many conventional materials. Anterior cruciate ligament (ACL) reconstruction, which is a frequent surgery in sport activities, is one of the fields in which nanocomposites could be utilized. In the present study, the mechanical properties of different porous scaffolds made from graphene nano-composites are presented ad load bearing capacity of these materials is calculated using finite element method. The numerical results are further compared with experimental published data. In addition, several geometrical and material parameters are analyzed to find the best configuration of nanocomposite scaffolds in reconstruction of ACL. Moreover, coating of detoxification chemicals are extremely easier on the nano-structured materials than conventional one. Detoxification potential of nano-composites in the injured body are also discussed in detail. The results indicated that nano-composite could be successfully used in place of auto- and allografts and also instead of conventional metallic screws in reconstruction of ACL.

• 대한정형외과스포츠의학회:학술대회논문집
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• 2004.09a
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• pp.45-45
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• 2004