• 대한정형외과스포츠의학회:학술대회논문집
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• 2004.09a
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• pp.49-49
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• 2004

• 대한정형외과스포츠의학회:학술대회논문집
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• 2007.04a
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• pp.19-23
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• 2007

• Journal of the Korean Arthroscopy Society
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• v.13 no.2
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• pp.105-110
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• 2009

• 대한관절경학회:학술대회논문집
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• 2006.11a
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• pp.16-17
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• 2006

• Journal of the Korean Arthroscopy Society
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• v.10 no.1
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• pp.103-107
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• 2006

Simultaneous acute rupture of the anterior cruciate ligament (ACL) and the patellar tendon is a very unusual injury. That is difficult to diagnose in initial evaluation of knee injury, because the patellar tendon rupture is often missed. We report a 26 year-old male patient who was treated with ACL reconstruction using achilles allograft and direct patellar tendon repair with achilles allograft augmentation. The patient had the stable knee and full range of motion. It's clinical results were excellent(Lysholm score 93, Tegner activity score 6).

• Journal of the Korea Convergence Society
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• v.9 no.8
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• pp.301-309
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• 2018

The aim of this study was to investigate the relationship between the neurocognitive ability and the risk factors of non-contact anterior cruciate ligament injuries during landing in female recreational athletes. Thirty-two female athletes participated in computerized neurocognition test and motion analysis for drop vertical jump. Pearson's linear correlation analysis was performed to analyze the relationship between the raw scores of neurocognition test and biomechanical variables including 3D joint angle, moment, power, vertical ground reaction force, loading rate, and support time. There were correlations between the scores of neurocognition test and biomechanical variables as high the neurocognition score, it also increase landing strategies were used to maintain posture of the lower extremity. Therefore, the neurocognitive test might be used as a good screening method to detect the risk factors before injury.

• Journal of KIISE
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• v.42 no.10
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• pp.1222-1230
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• 2015

Segmentation of the anterior cruciate ligament (ACL) in knee MRI remains a challenging task due to its inhomogeneous signal intensity and low contrast with surrounding soft tissues. In this paper, we propose a multi-atlas-based segmentation of the ACL in knee MRI with locally-aligned probabilistic atlas (PA) in an iterative graph cuts framework. First, a novel PA generation method is proposed with global and local multi-atlas alignment by means of rigid registration. Second, with the generated PA, segmentation of the ACL is performed by maximum-aposteriori (MAP) estimation and then by graph cuts. Third, refinement of ACL segmentation is performed by improving shape prior through mask-based PA generation and iterative graph cuts. Experiments were performed with a Dice similarity coefficients of 75.0%, an average surface distance of 1.7 pixels, and a root mean squared distance of 2.7 pixels, which increased accuracy by 12.8%, 22.7%, and 22.9%, respectively, from the graph cuts with patient-specific shape constraints.

• Journal of the Korean Society of Physical Medicine
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• v.6 no.4
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• pp.455-464
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• 2011

Purpose : This study is to investigate difference in the isometric muscular function of knee joints according to the time of participation in rehabilitation exercise in patients who had anterior cruciate ligament reconstruction. Methods : The subjects of this study were patients by sports injury or accident in the sports rehabilitation center of G hospital. The early exercise program group (n=7) started functional ability exercise from 2 weeks after the surgery and the late exercise program group (n=7) from 6 weeks after the surgery. Statistical analysis was used repeated measure ANOVA to test mean difference by using SPSS 18.0 for windows. Results : First, as to quadriceps femoris muscle according to the time of participation in exercise program, significant difference was observed according to interaction and time. Second, as to hamstring muscle according to the time of participation in exercise program, significant difference was observed in muscle strength according to time. Conclusion : This results suggest that if the effect of exercise program is similar between the early starting group and the late starting group, it is not necessary to have a long period of fixation as in the late exercise program group but is desirable to start functional ability exercise early in order to relieve pains in the knee joints.

• Journal of the Korean Arthroscopy Society
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• v.14 no.2
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• pp.92-101
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• 2010

The Hamstring autograft and the bone patellar bone tendon autograft have been widely used for anterior cruciate ligament reconstruction. In recent years, use of hamstring autograft for ACL reconstrution has been increased. The reason seems to be the advantages of the hamstring tendon such as high ultimate tensile load, low donor site morbidity and development of graft fixation method. These theoretical advantages have been increased as studies have shown that hamstring tendons actually regenerate after harvesting for ACL reconstruction. However, the concerns have arisen regarding the disadvantages of hamstring harvest, which were weakness of tibial internal rotation, the loss of flexion strength. The flexion strength loss has been controversial, therefore it needs to study whether restoration of flexion strength after hamstring regeneration is or not. In this study, we reviewed the current research of concerns on the advantage and disadvantage of hamstring tendon autograft and the hamstring regeneration. Furthermore, we compared the earlier studies and experiences regarding Hamstring regeneration with our research.

• Journal of Veterinary Clinics
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• v.31 no.1
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• pp.54-56
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• 2014

A 9-year-old Korean native cattle was referred with chief complaint of left hind limb lameness during 2 months. He could not bear a weight on the left hind limb. On palpation, the stifle joint was swollen and mild fever was felt. In X-ray images, increased joint fluid, subchondral bone erosions, osteophyte formation along the trochlear ridge, and changes in the shape of the infrapatellar fat pad were shown. Cranial displacement of the tibia and intercondylar eminence could be seen. Based on the history, physical examination and radiographic findings, the bull was diagnosed as anterior cruciate ligament rupture. Because he could not participate in further bullfighting competition anymore, we indicated the slaughter as soon as possible.