• 대한관절경학회:학술대회논문집
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• 2009.10a
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• pp.49-50
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• 2009

• 대한관절경학회:학술대회논문집
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• 2009.10a
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• pp.130-130
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• 2009

• The Academic Congress of Korean Shoulder and Elbow Society
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• 2001.03a
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• pp.22-23
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• 2001

• 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

• Journal of the Korean Arthroscopy Society
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• v.15 no.2
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• pp.99-107
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• 2011

Purpose: The purpose of this study was to investigate the clinical results after a anatomical double bundle ACL reconstruction using a longitudinally split tibialis anterior allograft. Materials and Methods: We evaluated 24 patients with a minimum follow-up of 12 months who had undergone anatomical double bundle ACL reconstructions. The grafts utilized in all cases were tibialis anterior allografts which were longitudinally split into two strands. A standard rehabilitation protocol was applied in all patients. The pre- and post-operative data including Lysholm scores, International Knee Documentation Committee (IKDC) scores, Lachman test, pivot shift test and the side-to-side differences of anterior laxity measured by KT-2000 arthrometer were analyzed by use of a statistical method Results: The mean side-to-side instrumented laxity measured by the KT-2000 arthrometer significantly improved to a mean of $1.04{\pm}0.80\;mm$ (P < 0.001). The Lysholm knee scores also improved from $58.34{\pm}15.32$ to $86.25{\pm}6.48$ after surgery (P < 0.001). The patients exhibited improved IKDC scores (A: 15 cases, B; 9 cases) at the final follow-up, compared to preoperative scores (B: 5, C: 10, D: 9). Conclusion: Our data demonstrated that clinical results of anatomical double bundle ACL reconstruction with a split tibialis anterior allograft are encouraging with excellent side-to side laxity, significantly improved Lysholm knee score, IKDC score, Lachman and pivot shift data.

• Journal of the Korean Arthroscopy Society
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• v.4 no.1
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• pp.13-18
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• 2000

Purpose : The purpose of this study was to compare the efficacy of bone-patellar tendon-bone(B-PTB) allograft with autograft B-PTB reconstruction of anterior cruciate ligament(ACL) according to the subjective and objective criteria. Materials and Methods : 42 patients were treated for acute rupture or chronic insufficiency of the ACL between March 1993 and June 1996. There were 18 autografts and 24 allografts for ACL reconstruction. At 2 years of follow-up after operation, autograft and allograft groups were compared based on subjective, objective criteria and Telos stress arthrometer. Results : The modified Feagin Scoring System revealed 16 patients$(88.9\%)$ with a satisfactory result by autografts, but 21 patients$(87.5\%)$ with a satisfactory result by allografts after 2-years follow-lip. There was no statistically significant difference between the two groups. ACL reconstruction with B-PTB allograft did not produce a significant functional deficit. But patellofemoral pain and crepitus were more frequent in the autografts$(33.3\%)$ than allografts$(8.3\%)$ (p<0.05). Conclusion : The ACL deficient knees treated with allografts for ACL reconstruction tended to be better than those reconstructed with autografts fur the reduction of patellofemoral crepitus and pain. B-PTB allograft provides an acceptable alternative to autograft tissue for reconstruction of the ACL.

• 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 the Korean Arthroscopy Society
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• v.9 no.1
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• pp.51-55
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• 2005

Purpose: To compare the stability and clinical result after anterior cruciate ligament reconstructed knee after graft fixation using Intrafix in tibial tunnel with or without additional tibial post fixation. Materials and Methods: We analyzed 37 cases which were treated with four-strand hamstring tendon autograft during the period from May 2002 to January 2003. The grafts were fixed with Rigidfix system (Mitek Product, Johnson and Johnson, USA) in femur tunnel and Intrafix system (Mitek Product, Johnson and Johnson, USA) in tibial tunnel. After tibial fixation, additional tibial post fixation was done, which was determined by the serial case number prospectively. Patients were followed for average of fourteen months(range, thirteen to twenty-five months) At the time of final follow-up, patients were evaluated in terms of Lachman test, pivot shift test, Lysholm scores, IKDC (International Knee Documentation Committee) assessment, side-to-side KT-1000 maximum-manual arthrometer differences. Results: At last follow-up, Lysholm score was average 93.1(range: 65 to 98), IKDC assessment revealed that 26 cases had score of A, 10 cases had score of B and 1 case had score of C. The average maximum-manual KT-1000 arthrometer side ?to-side difference was 2.5 mm$(0{\sim}6mm)$. There was one case in which the Lachman test was graded as 2+ and four cases in which the Lachman test was graded as 1+ and the remaining thirty-two cases were normal by Lachman test. One case had a 2+ pivot-shift, and 2 cases had a 11 pivot-shift. The remaining 34 knees were normal on pivot -shift testing. The average maximum-manual KT-1000 arthrometer side-to-side difference was average 2.8 mm$(0{\sim}6mm)$ in Intrafix only group and average 2.2 mm$(0{\sim}4mm)$ in additional fixation group (P>0.05). Conclusion: Without additional tibial fixation, the stability of the anterior cruciate reconstructed knee with hamstring graft which was fixed with Intrafix was restored.

• Journal of the Korean Arthroscopy Society
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• v.12 no.2
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• pp.112-117
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• 2008

Purpose: Double-bundle reconstruction of anterior cruciate ligament(ACL) has the advantage of restoring the isometry and original function of ACL. The purpose of this study is to evaluate the clinical results following double-bundle reconstruction of ACL using autogenous hamstring grafts through an accessory anteromedial portal. Materials and Methods: From January 2005 to July 2006, sixty patients(52 males, 8 females) underwent double-bundle ACL reconstruction using autogenous hamstring tendons..The mean age was 31.7 years($20{\sim}51$ years). The mean follow up period was 13.4 months($12{\sim}16$ months). We made a horizontal-oblique skin incision just medial to tibial tuberosity and harvested semitendinosus and gracilis tendon. Tibial tunnel for posterolateral bundle was made near its anatomical position. By modifying an anatomic reconstruction of ACL by Yasuda et al., we made a femoral tunnel for posterolateral bundle through accessory anteromedial portal. Tunnels for anteromedial bundle were made with conventional method. We reconstructed anteromedial bundle with semitendinosus tendon and posterolateral bundle with gracilis tendon. Clinical results at last follow up were evaluated by range of motion, extent of anterior displacement(KT-1000 arthrometer), pivot-shift test. Functional evaluation of clinical outcomes were evaluated by Lysholm score and modified Feagin Scoring System. Results: There was no limitation of motion of knee joint at last follow up. Mean side to side difference of anterior displacement of tibia by KT-1000 arthrometer was improved from 8.4 mm preoperatively to 1.7 mm postoperatively(p<0.05). Average Lysholm score was improved from 64.1 preoperatively to 92.2 postoperatively(p<0.05). In modified Feagin Scoring System, 90% of cases were rated as good or excellent. Conclusion: Double-bundle reconstruction of ACL using autogenous hamstring grafts through accessory anteromedial portal results in good clinical outcomes.