• 대한관절경학회:학술대회논문집
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• 2007.04a
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• pp.24-27
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• 2007

• The Journal of the Korean bone and joint tumor society
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• v.6 no.2
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• pp.88-91
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• 2000

The osteochondroma is the most common benign bone tumor, which occupies 40% of the benign bone tumor. About 80% of lesions arise in the long bone of the extremities, particularly in the knee and the upper extremity. But the occurrence of an intraarticular osteochondroma is rare, especially in the interphalangeal joint. We report the case of a intraarticular osteochondroma which occurred at the interphalangeal joint of the hand in a 12-year-old male patient. The plain X-ray demonstrates an exostosis arising from intraarticular dorsal aspect of the proximal phalanx of the right middle finger. The excised mass was round, measuring $8{\times}3$mm in size and 1 mm in thickness with definite cartilage capsule.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.22 no.6
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• pp.533-539
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• 2009

In this study, the femur, the tibia, the articular cartilage and the menisci are three dimensionally reconstructed using MR images of healthy knee joint in full extension of 26-year-old male. Three dimensional finite element model of the knee joint is fabricated on the reconstructed model. Also, the FE models of ligaments and tendons are attached on the biologically suitable position of the FE model. Bones, articular cartilages and menisci are considered as homogeneous, isotropic and linear elastic materials, and ligaments and tendons are modeled as truss element and nonlinear elastic springs. The numerical results show the contact pressure and the von Mises stress distribution in the soft tissues such as articular cartilages and menisci which can be regarded as important parameters to estimate the failure of the tissues and the pain of the patients.

• Journal of the Korean Arthroscopy Society
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• v.17 no.1
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• pp.6-10
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• 2013

Purpose: This study intends to verify the usefulness of magnetic resonance imaging (MRI) for estimate recovery after arthroscopic pull-out repair at root tears of medial meniscus. Materials and Methods: We performed 17 patients who examined MRI and arthroscopy among patients who had received repair of medial meniscus from November, 2007 to June, 2011. To determine restoration meniscus, we performed arthroscopy and MRI. Results: Lysholm knee scores before and after operation were average 56.4 and 79.0 and visual analogue scale (VAS) score was improved from 8 points to 3 points. From secondary look arthroscopy performed after operation, 17 cases showed stabilization after regeneration. However, In MRI, cleft sign implying root tears of medial meniscus was observed in all cases before and after operation, ghost sign was observed in 10 cases and 9 cases respectively, radial linear defect was showed 17 cases and 15 cases respectively. Conclusion: It was not useful that MRI after medial meniscus repair in non-anatomical site, to consider restoration of medial meniscus. To evaluate for recovery medial meniscus after repair more exactly, secondary arthroscopy would be required.

• Journal of the Korean Arthroscopy Society
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• v.14 no.2
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• pp.102-106
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• 2010

Purpose: The results of the repair for the superior labrum lesions attaching at the superior glenoid have not been satisfactory in every cases. We wanted to analyze the shoulder MRI and the anatomical morphology and pattern of the superior glenoid at which the superior labrum attaches to get anatomical information helpful in treating the superior labrum. Materials and Methods: We analyzed the coronal images of the shoulder MRI of 108 cases taken at our hospital. Average age was 52 years (range, 17~71 years), 55 males and 53 females. On two coronal images behind the attachment of the long head of biceps that the repair of the SLAP was performed at, the length of the attachment of superior labrum and the angle of the supero-lateral glenoid were measured. Results: The average length of the attachment of superior labrum was $9.78{\pm}1.64\;mm$. The average length was $10.1{\pm}1.61mm$ in male, $9.43{\pm}1.6\;mm$ in female. The angle of the supero-lateral glenoid was $89.6{\pm}7.6$ degrees. Conclusion: The attachment of the superior labrum in coronal plane was shorter in posterior spot than anterior. The angle of the supero-lateral glenoid was less in posterior spot.

• Journal of the Korean Arthroscopy Society
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• v.6 no.2
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• pp.156-160
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• 2002

Purpose : To evaluate the results and usefulness of meniscal repair using meniscal arrows with ACL reconstruction. Material and Methods : Among cases of the simultaneous meniscal arrow fixation and ACL recontruction performed between May, 1997 and September, 2000, 17 cases could be evaluated. The average follow-up were 18.5 months. Twelve cases were medial meniscus, 5 cases, lateral meniscus. All cases were longitudinal tear. Meniscal tear were seen at red-red zone in 13 cases, red-white zone in 5 cases. The results were analyzed by pain, joint line tenderness, locking, McMurray test, the Marshall knee scoring scale and complications. Results : Postoperatively two patients had mild joint line tenderness without pain on joint motion or weight bearing. No patient had locking or positive McMurray test. At last follow-up, 15 cases $(88\%)$ were 'excellent' or 'good' according to the Marshall knee score scale. There were two complications which are soft tissue irritation sign on active knee motion and a femoral chondral injury due to protruded T-shaped head of meniscus arrow. Conclusion : Meniscus arrow can be one of the options in repairing the associated meniscus tear, especially the posterior horn of medial meniscus, during ACL reconstruction. However, surgeons using meniscus arrow should be aware of its potential complications such as pain due to soft tissue irritation and chondral damage of the femoral condyle.

• Journal of the Korean Arthroscopy Society
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• v.16 no.1
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• pp.47-51
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• 2012

Although lipoma is the most common soft-tissue tumor, accounting for up to one half of all soft-tissue tumors, intra-articular synovial lipomas are rarely seen. Occasional cases of intra-articular lipoma arborescens have been reported. However, true intra-articular synovial lipomas should be differentiated from other similar lipomatoid conditions such as lipoma arborescens, which are different pathologic entities and show different clinical presentations. This article presents the case of a patient who had an intra-articular synovial lipoma of the knee joint.

• Journal of the Korean Arthroscopy Society
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• v.10 no.1
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• pp.118-122
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• 2006

Purpose: We introduce a technique of all inside arthroscopic capsular imbrication and lateral release used to treat patellofemoral instability. Methods: With the arthroscope in the anteromedial portal for best viewing, the arthroscopic scissor is placed through superolateral portal for proximal to distal release. The release performed 5mm to 1cm from the edge of the patella. After completion of the procedure, with the arthroscope in anterolateral portal, we inserted 5mm cannula in superolateral portal and made working portal from superomedial portal. Medial reefing was performed with all inside technique by using curved needle of the spectrum suturing system and No. 1 monofilament PDS suture is passed through the superomedial portal percutaneously and retrieved through a superolateral portal. Conclusion: Several methods for arthroscopic patella realignment have been proposed, but they have consisted primarily of arthroscopically assisted techniques using a medial incision. We believe that our procedure is preferable to arthroscopically assisted methods commonly used, in that an incision is avoided and the vastus medialis obliqqus is not violated. Our technique is minimally invasive and is easy to control the tightness of the medial patellofemoral ligament (MPFL) under direct vision.

• Journal of the Korean Arthroscopy Society
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• v.6 no.2
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• pp.86-89
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• 2002

견관절 분야의 생역학적 연구를 바탕으로 질병에 대해 적절한 접근 방법을 알 수 있고 관절경술로 진단이 보다 정확해지고 있음은 주지의 사실이다. 하지만 아직도 해결되지 않은 많은 견관절통을 이해하고자 하는 연구가 지속되고 있고 또한 수기상의 발달로 이제는 거의 관절경술로 치료를 하려는 경향이 있다. 최근 미세 불안정성등 다양한 병변에 대한 연구가 지속되는 등 견관절 분야의 관절경술은 계속 발전하리라 생각된다. 물론 관절경술을 많이 하다 보면 예상치 않게 심각한 문제점을 야기할 수도 있다는 점은 명심하여야 할 것이다.

• Clinics in Shoulder and Elbow
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• v.11 no.1
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• pp.37-40
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• 2008

Purpose: We wanted to evaluate the normal glenoid size of Koreans in their 7th and 8th decades by conducting Computed tomographic (CT) studies. Materials and Methods: The CT images were obtained from the normal scapulae of the patients (mean age: 68.8) who had humeral fracture. A display workstation version 2.0.73.315 was used to measure the scans to determine the maximal superoinferior (SI) and anteroposterior (AP) diameters of the glenoid vault. Results: The average diameters of curvature of the glenoid were 31.2 mm (range: 27 to 34 mm) in the superior-inferior direction and 26.1mm (range: 22 to 31mm) in the anterior-posterior direction. Conclusion: This study showed the normal glenoid size of Koreans and it is different from the size that the international literature reported. It should be an important factor for the treatment of fracture or in designing arthroplasty implants.