• Journal of the Korean Arthroscopy Society
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• v.7 no.1
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• pp.7-9
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• 2003

전방십자인대 재건술시 이식건의 과간 절흔에 대한 충돌을 예방하기 위하여 어느 절도의 절흔 성형을 시행 할 것인가에 대하여는 아직까지 논란이 있으며 수술시 절흔의 형태, 골극 형성 유무, 이식건의 크기 경골 터널의 위치를 고려하여 시행하여야 한다. 절흔 후방의 골 제거가 과도하게 시행 될 경우에는 대퇴골 부착부가 외측으로 전위되어 슬관절의 생역학적 변화를 가져올 수 있고, 주변 관절 연골의 조기 퇴행성 변화를 초래할 수 있으므로 세심한 주의를 기울여야 하며 절흔 성형은 가능한 한 최소화 하는 것이 출혈, 동통 및 부종 등의 술후 합병증을 줄일 수 있다.

• Journal of Korean Orthopaedic Sports Medicine
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• v.12 no.1
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• pp.16-23
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• 2013

Multiple ligament knee injury is defined as rupture to at least two of the four major knee ligament structures. Three or four knee ligament injury results in knee dislocation as complete disruption of the integrity of the tibiofemoral articulation. In multiple ligament knee injury, vascular and neurologic assessment should be performed meticulously and systematically. Emergency surgery should be needed if arterial injury is suspected. Surgical treatment rather than conservative management should be done and early surgery might be better than delayed surgery. Reconstruction of ACL and PCL, repair or reconstruction of MCL, and reconstruction of posterolateral corner are recommended, although many debates have occurred. Multiple ligament knee injury requires more aggressive management than single ligament knee injury.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.33 no.4
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• pp.430-439
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• 2009

Posterior Cruciate Ligament (PCL) plays an important role in knee extension. Rotational instability due to injured PCL can be restored by various PCL reconstruction methods. In this study, the initial lengthening affected by fixation device and location was demonstrated, and furthermore, the slippage and the relationship between lengthening ratio and slippage ratio in the calcaneus and soft tissue fixation methods was newly suggested. Eight specimens of proximal tibia and Achilles tendon grafts were harvested from four cadavers and divided into four groups in regard to the four different types of transtibial fixation techniques. The cyclic load ranged from 50 N to 250 N applied to each graft fixed to proximal tibia in 55 degrees. The initial lengthening ratio to the total elongation has been approximately constant regardless of the fixation methods. The soft tissue fixation method with an interference screw showed about 56.4% slippage ratio to the total elongation and the same method with a double cross-pin presented about 45.4% slippage ratio. The soft tissue fixation method with an interference screw demonstrated approximately 2 mm less total elongation and about 13% more slippage than lengthening because of poor fixation compared to the same method with a double cross-pin.

• Journal of the Korean Arthroscopy Society
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• v.12 no.1
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• pp.40-44
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• 2008

Purpose: The purpose of this study was to report the real geometry of Resident's ridge doing in anterior cruciate ligament reconstruction Materials and Methods: From Jan 2007 to Aug 2007, 48 cases which had normal distal femoral condyle analyzed with Multidetector-Row Computed Tomography. Resident's ridge was defined as change of height above 1 mm in lateral wall of intercondylar notch. Anterior-posterior length of intercondylar notch, length and height of Resident's ridge, distance of Resident's ridge from posterior cortex were estimated with 3-D reconstruction using $Lucion^{(R)}$ program. Results: Cases were $59{\pm}16$ years olds and male was 16 cases, female was 32 cases. 9 cases had no Resident's ridge, anterior-posterior length of intercondylar notch was $25.4{\pm}3.5$ mm, average of length and height of the Resident's ridge was $8.2{\pm}2.6,\;3.5{\pm}1.5$ mm. Distance of the Resident's ridge from posterior cortex was $7.6{\pm}2.6$ mm. Conclusion: Resident's ridge was used as landmark in anterior cruciate ligament reconstruction, which presented in many cases and which had distinct length and height.

• Journal of the Korean Arthroscopy Society
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• v.11 no.1
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• pp.20-23
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• 2007

Purpose: The purpose of this study is to evaluate characteristics of a deep infection after arthroscopic knee surgery. Materials and Methods: We selected 894 patients who underwent arthroscopic knee surgery between February 1994 and August 2006. We analyzed the results of the patients with definite infection. Results: Seven cases out of the 894 knee arthroscopic surgery which was performed by one surgeon during 12 years were diagnosed as postoperative deep infection (0.9%). Infection developed in one repair case among the meniscal surgeries (1419=0.2%). There were six infection cases in intraarticular ligament reconstruction (6/343=2%); 3 in ACL surgeries (3/152), 2 in PCL surgeries (2/70) and 1 in combined cruciate ligament surgery and extra-articular reconstruction (l/26). Conclusion: Postoperative infection rate of arthroscopic knee surgery was relatively low. However an attention for the prevention of postoperative deep infection should be paid in intraarticular ligament reconstruction because of its relatively high risk of infection.

• Journal of Korean Orthopaedic Sports Medicine
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• v.9 no.1
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• pp.41-47
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• 2010

Purpose: To compare the obliquity of femoral tunnels prepared with transtibial (TT) versus anteromedial portal technique (AM) using x-ray in single-bundle anterior cruciate ligament (ACL) reconstruction. Materials and Methods: Among one-hundred thirty two patients who were undergoing ACL reconstruction from January 2007 to December 2009, thirty patients using TT and twenty patients using AM, those who had single-bundle ACL reconstruction, were evaluated with plain radiographs including anteroposterior, intercondylar notch and lateral view to compare the obliquity of bone tunnels. Results: The mean coronal obliquity of femoral tunnel for TT was $71^{\circ}$ (range; $65^{\circ}{\sim}77^{\circ}$), while for AM was $51^{\circ}$ (range; $39^{\circ}{\sim}60^{\circ}$) and the mean sagittal obliquity of femoral tunnel for TT was $22.7^{\circ}{\pm}7.8$, while for AM was $30.2^{\circ}{\pm}6.9$, their differences between them were statistically significant (P<0.05). However, there were no differences between two techniques on the tibial tunnel obliquity in coronal and sagittal plane. Conclusion: Anterior cruciate ligament reconstruction using AM portal technique allows more horizontally oriented and divergent femoral tunnel compared to that of transtibial technique. This seems to enable the graft placement into the femoral footprint and preserve the posterior cortical wall.

• Journal of the Korean Arthroscopy Society
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• v.8 no.2
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• pp.75-81
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• 2004

Purpose: Recent development and advances in arthroscopic surgical techniques for Anterior Cruciate Ligament(ACL) reconstruction have led to the ideal location for the etric point from 10 o'clock (in right knee) and 13:30 (in left knee) to 10:30 (in right knee) and 14 o'clock (in left knee) in the frontal plane. This study was performed to compare operative methods and the radiologic results of femoral tunnels made through the tibial tunnel(trans-tibial approach) and the anteromedial portal. Material and Methods: From January 2003 to May 2004, one-hundred reconstructions of anterior cruciate ligament were performed. Group I (femoral tunnel through tibial tunnel) was composed of 50 cases and group ll (femoral tunnel through anteromedial portal) was consisted of 50 cases. The study was performed to compare the radiographic results of femoral tunnels made through the tibial tunnel and the anteromedial portal and operative methods. Results: In operative methods at Group II, femoral tunnel was made more easily at isometric point than Group I, a good visual field was achived because 100$^{\circ}$ flxion of knee, they can be reduced risk of posterior cortical breakage and tunnel-graft mismatching and decreased divergence of femoral interference screw in radiology (P<0.05). The angle between femoral tunnel and longitudinal axis of ACL wae increased at Group ll. Conclusion: Aanteromedial portal technique was more useful in ACL reconstruction for femoral tunnel toward 10 o'clock to10:30(in right) or 1:30 to 2 o'clock(in left).

• Journal of the Korean Arthroscopy Society
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• v.5 no.1
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• pp.45-48
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• 2001

The anterior horn of the medial meniscus is attached to the anterior surface of the tibia. The anterior horns of the medial and lateral menisci are connect with the transverse ligament. The posterior horn of the medial meniscus is firmly attached to the posterior aspect of the tibia just anterior to the insertion of the posterior cruciate ligament. The authors incidentally found an anomalous insertion of posterior horn of medial meniscus into the anterior horn area during arthroscopic examination in the symptomatic knee joint, which had been ruptured anterior cruciate ligament, and report with literature review.

• 대한관절경학회:학술대회논문집
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• 2007.10a
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• pp.34-35
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• 2007

• Journal of the Korean Arthroscopy Society
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• v.2 no.1
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• pp.97-100
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• 1998

The giant cell tumor of tendon sheath is very rarely present inside the knee joint. The authors report a case of intraarticular giant cell tumor of tendon sheath arising from posterior cruciate ligament which was successfully excised arthroscopically using posterior trans-septal portal at the time of arthroscopic reconstruction of anterior cruciate ligament.