• Clinics in Orthopedic Surgery
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• 제10권4호
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• pp.407-412
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• 2018

Background: We conducted this study to determine the optimal length of patellar and tibial bone blocks for the modified transtibial (TT) technique in anterior cruciate ligament (ACL) reconstruction using the bone-patellar tendon-bone (BPTB) graft. Methods: The current single-center, retrospective study was conducted in a total of 64 patients with an ACL tear who underwent surgery at our medical institution between March 2015 and February 2016. After harvesting the BPTB graft, we measured its length and that of the patellar tendon, patellar bone block, and tibial bone block using the arthroscopic ruler and double-checked measurements using a length gauge. Outcome measures included the length of tibial and femoral tunnels, inter-tunnel distance, length of the BPTB graft, patellar tendon, patellar bone block, and tibial bone block and graft-tunnel length mismatch. The total length of tunnels was defined as the sum of the length of the tibial tunnel, inter-tunnel distance and length of the femoral tunnel. Furthermore, the optimal length of the bone block was calculated as (the total length of tunnels - the length of the patellar tendon) / 2. We analyzed correlations of outcome measures with the height and body mass index of the patients. Results: There were 44 males (68.7%) and 20 females (31.3%) with a mean age of 31.8 years (range, 17 to 65 years). ACL reconstruction was performed on the left knee in 34 patients (53%) and on the right knee in 30 patients (47%). The optimal length of bone block was 21.7 mm (range, 19.5 to 23.5 mm). When the length of femoral tunnel was assumed as 25 mm and 30 mm, the optimal length of bone block was calculated as 19.6 mm (range, 17 to 21.5 mm) and 22.1 mm (range, 19.5 to 24 mm), respectively. On linear regression analysis, patients' height had a significant correlation with the length of tibial tunnel (p = 0.003), inter-tunnel distance (p = 0.014), and length of patellar tendon (p < 0.001). Conclusions: Our results indicate that it would be mandatory to determine the optimal length of tibial tunnel in the modified TT technique for ACL reconstruction using the BPTB graft. Further large-scale, multi-center studies are warranted to establish our results.

• 대한관절경학회지
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• 제12권2호
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• pp.118-124
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• 2008

Purpose: Recent development and advances in the arthroscopic surgical techniques for anterior cruciate ligament(ACL) reconstruction have led to the ideal location for more oblique anatomic point of the femur from 10 to 10:30 o'clock(in the right knee) and from 2 to 1:30 o'clock(in the left knee) in the frontal plane. This study was performed to compare the operative methods and the radiologic results of the femoral tunnels made through the tibial tunnel(trans-tibial approach) and the anteromedial portal. Materials and Methods: From January 2003 to May 2004, on hundred reconstructions of ACL were performed. Group I(the femoral tunnel made through the tibial tunnel) consisted of 50 cases and group I(the femoral tunnel made through the anteromedial portal) consisted of 50 cases. The operative methods and the radiographic results of the femoral tunnels were compared. Results: Femoral tunnel was made more easily at more oblique anatomic point in group II than in group I. In group II, better visual field was achieved at the angle of 100? flexion of the knee joint, the risks of the posterior cortical breakage and the tunnel-graft mismatching were reduced more, and the divergence of femoral interference screw from the radiograph decreased more than in group I(p<0.05). The angle between the femoral tunnel and the longitudinal axis of ACL increased in group II. Conclusion: Anteromedial portal technique was useful for femoral tunneling toward 10 to 10:30 o'clock(in the right knee) and 2 to 1:30 o'clock(in the left knee) in ACL reconstruction. Level of Evidence:Level III, case-control study.

• 대한관절경학회지
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• 제10권2호
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• pp.203-208
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• 2006

목적: 후방십자인대의 경 경골 두 다발 재건술에 있어서 기존의 방법들은 공여 인대가 길어야 하는 문제 때문에 이식건의 선택이 제한적인 경우가 많으며 경골부에서 이중의 고정을 해야 하는 문제점 등이 있다. 이에 저자들은 두 다발 재건술을 실시하면서 경골부에서 초기에 단일 고정으로써 안정성을 얻고, 공여 인대 길이에 제한을 덜 받는 방법을 소개하고자 한다. 수술 술기: 진단적 관절경 검사를 실시 한 후 두 다발 재건술을 위한 이식건을 준비하고, 경골 터널 및 TransFix 고정을 위한 준비를 한다. 대퇴부에 2개의 터널을 만들고, 이식건을 전 내측 입구를 이용하여 경골부, 대퇴부 순으로 통과시킨 후 TransFix를 이용하여 경골부에 고정을 먼저 실시하고, 대퇴부의 2 다발을 각각의 고정 위치에서 고정을 실시한다. 결론: 경경골 터널을 이용한 두 다발 후방십자인대 재건술에서 TransFix를 이용한 경골부의 고정은 단일 고정으로써 강한 고정을 제공하면서 이식건의 길이에 제한을 받지 않고, 전 내측 입구로 이식건을 통과시킴으로써 이식건의 손상을 방지할 수 있는 좋은 방법이라고 생각한다.

• 대한관절경학회지
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• 제2권2호
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• pp.124-128
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• 1998

From Feb. 1996 to Feb. 1997. among sixty-four patients of anterior cruciate ligament(ACL) reconstruction using multi-stranded hamstring tendon and EndoButton fixation, twenty-five patients of volunteer, 15 men and 10 women, from 16 to 50 years of age(mean 27.6 years) underwent arthroscopic evaluation. Arthroscopic evaluation was routinely performed one year after surgery along with an examination of stability. The purpose of this study was to arthroscopically evaluate the morphological changes that occurred in hamstring tendon autograft one year after ACL reconstruction. Both of the tendon graft and the adjacent fibrous tissues were observed for gross appearance and physical properties with probing and response to passive anterior translation. Biopsy samples were taken from the surrounding fibrous tissue and the tendon graft. Grossly, we found a well-defined ligamentous structure with good tension tested with a probe. A common finding was that the reconstructed ligaments were embedded in a layer of the synovium, and blood vessels could be seen on the anterior surface of the ligament. The biopsy tissue was placed in formalin solution and subjected to histological preparation by hematoxylin and eosin staining method. The hamstring tendon graft appeared histologically normal under light microscopic finding. There were a few vessels located between existing collagen bundles, and the vessels had an orderly pattern. The surrounding fibrous tissue envelope was covered with synovium. We pleased with preliminary findings in our evaluation.

• Investigative Magnetic Resonance Imaging
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• 제20권2호
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• pp.95-104
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• 2016

Purpose: To evaluate the knee joint after double-bundle anterior cruciate ligament (ACL) reconstruction with three-dimensional (3D) isotropic magnetic resonance (MR) image, and to directly compare the ACL graft findings on 3D MR with the clinical results. Materials and Methods: From January 2009 to December 2014, we retrospectively reviewed MRIs of 39 patients who had reconstructed ACL with double bundle technique. The subjects were examined using 3D isotropic proton-density sequence and routine two-dimensional (2D) sequence on 3.0T scanner. The MR images were qualitatively evaluated for the intraarticular curvature, graft tear, bony impingement, intraosseous tunnel cyst, and synovitis of anteromedial and posterolateral bundles (AMB, PLB). In addition anterior tibial translation, PCL angle, PCL ratio were quantitatively measured. KT arthrometric values were reviewed for anterior tibial translation as positive or negative. The second look arthroscopy results including tear and laxity were reviewed. Results: Significant correlations were found between an AMB tear on 3D-isotropic proton density MR images and arthroscopic proven AMB tear or laxity (P < 0.05). Also, a significant correlation was observed between increased PCL ratio on 3D isotropic MRI and the arthroscopic findings such as tear, laxities of grafts (P < 0.05). KT arthrometric results were found to be significantly correlated with AMB tears (P < 0.05) and tibial tunnel cysts (P < 0.05). Conclusion: An AMB tear on 3D-isotropic MRI was correlated with arthroscopic results qualitatively and quantitatively. 3D isotropic MRI findings can aid the evaluation of ACL grafts after double bundle reconstruction.

• 대한정형외과스포츠의학회지
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• 제7권2호
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• pp.142-145
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• 2008

육상 선수나 격투기 선수들에게서 전족부 손상은 흔한 편이나 족무지 지간 관절은 해부학적 안정성으로 인해 관절 측부 인대손상은 매우 드문 것으로 알려져 있다. 특히 스포츠 손상에 의한 지간 관절의 만성 불안정성에 대해서는 국내외적으로 보고가 극히 적어 저자들은 대학 태권도 선수에서 족무지 지간 관절의 진구성 외측부 인대 파열에 기인한 만성 무지 내반 불안정성에 대하여 수술적으로 치료하여 좋은 결과를 얻었기에 이를 보고하고자 한다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2008년도 추계학술대회 논문집
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• pp.203-204
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• 2008

• 대한관절경학회:학술대회논문집
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• 대한관절경학회 2007년도 제17차 추계학술대회 심포지움
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• pp.20-21
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• 2007

• 대한족부족관절학회:학술대회논문집
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• 대한족부족관절학회 2008년도 추계학술대회 및 총회
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• pp.15-15
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• 2008

• 대한관절경학회:학술대회논문집
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• 대한관절경학회 2008년도 춘계 공동 학술대회
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• pp.45-46
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• 2008