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Torbjørn Grøntvedt - One of the best experts on this subject based on the ideXlab platform.

  • A Sixteen-Year Follow-up of Three Operative Techniques for the Treatment of Acute Ruptures of the Anterior Cruciate Ligament
    The Journal of bone and joint surgery. American volume, 2006
    Co-Authors: Jon Olav Drogset, Torbjørn Grøntvedt, Anders Mølster, Ole Rasmus Robak, Annja T. Viset, Lars Engebretsen
    Abstract:

    Background This study compares three surgical procedures that we used in the past to treat ruptures of the anterior cruciate Ligament: acute primary repair, acute repair augmented with a synthetic Ligament-Augmentation Device, and acute repair augmented with autologous bone-patellar tendon-bone graft. Methods This is the third report on a group of patients who were randomized to the three different procedures between 1986 and 1988. There were fifty patients in each group. The patients were evaluated prospectively at one, two, five, and sixteen years with use of the Tegner activity score and the Lysholm functional score. Stability of the knee was assessed with clinical examination and with use of the KT-1000 arthrometer. Results One hundred and twenty-nine (88%) of the 147 patients who were available for follow-up completed the study. Eleven patients (24%) who had a primary repair, four patients (10%) who had repair with a Ligament Augmentation Device, and one patient (2%) who had Augmentation with autologous bone-patellar tendon-bone graft underwent anterior cruciate Ligament revisions between the primary operation and the sixteen-year follow-up examination. The rate of revision was ten times higher in the group that had primary repair than in the group that had repair with bone-patellar tendon-bone graft (p = 0.003). In the remaining patients, those who had repair with a bone-patellar tendon-bone graft had significantly more stable knees than those who had repair with a Ligament Augmentation Device, as measured by the Lachman test (p = 0.026). Nine (11%) of the eighty-five patients for whom data were available had osteoarthritis in the primarily reconstructed knee, and three patients (3.5%) had osteoarthritis in the contralateral knee at sixteen years (p = 0.001); no difference was noted among the three groups. The mean Lysholm score at sixteen years was 88 points for the knees that had primary repair, 85 points for those that had repair with the Ligament Augmentation Device, and 90 points for those managed with a bone-patellar tendon-bone graft (p = 0.286). Conclusions At long-term (sixteen-year) follow-up, the rate of revision anterior cruciate Ligament surgery is much higher following primary repair than after primary repair augmented by a bone-patellar tendon-bone graft. It can be expected that approximately 10% of patients undergoing anterior cruciate Ligament reconstruction acutely will have osteoarthritis develop in the reconstructed knee. We no longer perform any of these surgical techniques as open procedures.

  • Anterior Cruciate Ligament Reconstruction with and without a Ligament Augmentation Device Results at 8-Year Follow-up
    The American journal of sports medicine, 2002
    Co-Authors: Jon Olav Drogset, Torbjørn Grøntvedt
    Abstract:

    Background: Ligament Augmentation Devices have been used in anterior cruciate Ligament reconstruction since the suggestion of Kennedy et al. in 1980 that such Devices would allow grafts to heal faster and more safely.Hypothesis: Patients who had Augmentation will have better outcomes after 8 years.Study Design: Prospective randomized case control study.Methods: Between 1991 and 1993, 100 patients were randomized to groups undergoing anterior cruciate Ligament reconstruction with bone-patellar tendon-bone grafts with (49) or without (51) use of a Kennedy Ligament Augmentation Device. Of these 100 patients, 94 were examined at an average of 8 years after surgery. Fifteen patients were excluded because of rupture in the other knee and 11 because of rerupture in the same knee.Results: Of the remaining 68 patients, the mean Lysholm function score was 84 in the Augmentation group and 87 in the control group. There was a statistically significant relationship between preoperatively detected cartilage injury and ...

  • A Prospective, Randomized Study of Three Operations for Acute Rupture of the Anterior Cruciate Ligament. Five-Year Follow-up of One Hundred and Thirty-one Patients*
    The Journal of bone and joint surgery. American volume, 1996
    Co-Authors: Torbjørn Grøntvedt, Lars Engebretsen, Pål Benum, Ove J. Fasting, Anders Mølster, Torbjørn Strand
    Abstract:

    AbstractA five-year, prospective, randomized follow-up study was done to compare three methods for repair of a rupture of the anterior cruciate Ligament of the knee: acute primary repair (Group 1), acute repair with a synthetic Ligament-Augmentation Device (Group 2), and acute repair augmented with

  • Comparison between magnetic resonance imaging findings and knee stability: measurements after anterior cruciate Ligament repair with and without Augmentation. A five- to seven-year followup of 52 patients.
    The American journal of sports medicine, 1995
    Co-Authors: Torbjørn Grøntvedt, Lars Engebretsen, Ivar Rossvoll, Olaug Smevik, G. Nilsen
    Abstract:

    We compared magnetic resonance imaging findings with knee stability measurements in a group of 52 pa tients 5 to 7 years after repair of an acute anterior cru ciate Ligament rupture. The patients underwent one of three surgical procedures: nonaugmented repair using the Palmer technique, repair with synthetic augmenta tion, and repair with biologic Augmentation. The appear ances of the menisci, subchondral bone, and cartilage were also assessed. Of the patients with clinically stable knees in the nonaugmented repair group, the repaired Ligament appeared to be present and intact in 54% (7 of 13) of the patients. In the group with the repair aug mented with the Ligament Augmentation Device, 33% (4 of 12) demonstrated repair integrity, whereas in the group with patellar tendon Augmentation of the repair, 82% (14 of 17) of the patients with clinically stable knees had intact Ligaments on magnetic resonance imaging. Twelve patients had new and complete ruptures of one of the menisci, nine of which occurred in u...

Lars Engebretsen - One of the best experts on this subject based on the ideXlab platform.

  • Anterior Cruciate Ligament Reconstruction Using a Bone-Patellar Tendon-Bone Graft With and Without a Ligament Augmentation Device: A 25-Year Follow-up of a Prospective Randomized Controlled Trial
    Orthopaedic journal of sports medicine, 2018
    Co-Authors: Marlene Mauseth Elveos, Jon Olav Drogset, Lars Engebretsen, Raymond Brønn, Trond Olav Lundemo, Tone Gifstad
    Abstract:

    Background:Various grafts and Ligament Augmentation Devices (LADs) have been used in the search for optimal reconstruction of the anterior cruciate Ligament (ACL).Purpose:To compare 25-year follow-...

  • A Sixteen-Year Follow-up of Three Operative Techniques for the Treatment of Acute Ruptures of the Anterior Cruciate Ligament
    The Journal of bone and joint surgery. American volume, 2006
    Co-Authors: Jon Olav Drogset, Torbjørn Grøntvedt, Anders Mølster, Ole Rasmus Robak, Annja T. Viset, Lars Engebretsen
    Abstract:

    Background This study compares three surgical procedures that we used in the past to treat ruptures of the anterior cruciate Ligament: acute primary repair, acute repair augmented with a synthetic Ligament-Augmentation Device, and acute repair augmented with autologous bone-patellar tendon-bone graft. Methods This is the third report on a group of patients who were randomized to the three different procedures between 1986 and 1988. There were fifty patients in each group. The patients were evaluated prospectively at one, two, five, and sixteen years with use of the Tegner activity score and the Lysholm functional score. Stability of the knee was assessed with clinical examination and with use of the KT-1000 arthrometer. Results One hundred and twenty-nine (88%) of the 147 patients who were available for follow-up completed the study. Eleven patients (24%) who had a primary repair, four patients (10%) who had repair with a Ligament Augmentation Device, and one patient (2%) who had Augmentation with autologous bone-patellar tendon-bone graft underwent anterior cruciate Ligament revisions between the primary operation and the sixteen-year follow-up examination. The rate of revision was ten times higher in the group that had primary repair than in the group that had repair with bone-patellar tendon-bone graft (p = 0.003). In the remaining patients, those who had repair with a bone-patellar tendon-bone graft had significantly more stable knees than those who had repair with a Ligament Augmentation Device, as measured by the Lachman test (p = 0.026). Nine (11%) of the eighty-five patients for whom data were available had osteoarthritis in the primarily reconstructed knee, and three patients (3.5%) had osteoarthritis in the contralateral knee at sixteen years (p = 0.001); no difference was noted among the three groups. The mean Lysholm score at sixteen years was 88 points for the knees that had primary repair, 85 points for those that had repair with the Ligament Augmentation Device, and 90 points for those managed with a bone-patellar tendon-bone graft (p = 0.286). Conclusions At long-term (sixteen-year) follow-up, the rate of revision anterior cruciate Ligament surgery is much higher following primary repair than after primary repair augmented by a bone-patellar tendon-bone graft. It can be expected that approximately 10% of patients undergoing anterior cruciate Ligament reconstruction acutely will have osteoarthritis develop in the reconstructed knee. We no longer perform any of these surgical techniques as open procedures.

  • A Prospective, Randomized Study of Three Operations for Acute Rupture of the Anterior Cruciate Ligament. Five-Year Follow-up of One Hundred and Thirty-one Patients*
    The Journal of bone and joint surgery. American volume, 1996
    Co-Authors: Torbjørn Grøntvedt, Lars Engebretsen, Pål Benum, Ove J. Fasting, Anders Mølster, Torbjørn Strand
    Abstract:

    AbstractA five-year, prospective, randomized follow-up study was done to compare three methods for repair of a rupture of the anterior cruciate Ligament of the knee: acute primary repair (Group 1), acute repair with a synthetic Ligament-Augmentation Device (Group 2), and acute repair augmented with

  • Comparison between magnetic resonance imaging findings and knee stability: measurements after anterior cruciate Ligament repair with and without Augmentation. A five- to seven-year followup of 52 patients.
    The American journal of sports medicine, 1995
    Co-Authors: Torbjørn Grøntvedt, Lars Engebretsen, Ivar Rossvoll, Olaug Smevik, G. Nilsen
    Abstract:

    We compared magnetic resonance imaging findings with knee stability measurements in a group of 52 pa tients 5 to 7 years after repair of an acute anterior cru ciate Ligament rupture. The patients underwent one of three surgical procedures: nonaugmented repair using the Palmer technique, repair with synthetic augmenta tion, and repair with biologic Augmentation. The appear ances of the menisci, subchondral bone, and cartilage were also assessed. Of the patients with clinically stable knees in the nonaugmented repair group, the repaired Ligament appeared to be present and intact in 54% (7 of 13) of the patients. In the group with the repair aug mented with the Ligament Augmentation Device, 33% (4 of 12) demonstrated repair integrity, whereas in the group with patellar tendon Augmentation of the repair, 82% (14 of 17) of the patients with clinically stable knees had intact Ligaments on magnetic resonance imaging. Twelve patients had new and complete ruptures of one of the menisci, nine of which occurred in u...

Jon Olav Drogset - One of the best experts on this subject based on the ideXlab platform.

  • Anterior Cruciate Ligament Reconstruction Using a Bone-Patellar Tendon-Bone Graft With and Without a Ligament Augmentation Device: A 25-Year Follow-up of a Prospective Randomized Controlled Trial
    Orthopaedic journal of sports medicine, 2018
    Co-Authors: Marlene Mauseth Elveos, Jon Olav Drogset, Lars Engebretsen, Raymond Brønn, Trond Olav Lundemo, Tone Gifstad
    Abstract:

    Background:Various grafts and Ligament Augmentation Devices (LADs) have been used in the search for optimal reconstruction of the anterior cruciate Ligament (ACL).Purpose:To compare 25-year follow-...

  • A Sixteen-Year Follow-up of Three Operative Techniques for the Treatment of Acute Ruptures of the Anterior Cruciate Ligament
    The Journal of bone and joint surgery. American volume, 2006
    Co-Authors: Jon Olav Drogset, Torbjørn Grøntvedt, Anders Mølster, Ole Rasmus Robak, Annja T. Viset, Lars Engebretsen
    Abstract:

    Background This study compares three surgical procedures that we used in the past to treat ruptures of the anterior cruciate Ligament: acute primary repair, acute repair augmented with a synthetic Ligament-Augmentation Device, and acute repair augmented with autologous bone-patellar tendon-bone graft. Methods This is the third report on a group of patients who were randomized to the three different procedures between 1986 and 1988. There were fifty patients in each group. The patients were evaluated prospectively at one, two, five, and sixteen years with use of the Tegner activity score and the Lysholm functional score. Stability of the knee was assessed with clinical examination and with use of the KT-1000 arthrometer. Results One hundred and twenty-nine (88%) of the 147 patients who were available for follow-up completed the study. Eleven patients (24%) who had a primary repair, four patients (10%) who had repair with a Ligament Augmentation Device, and one patient (2%) who had Augmentation with autologous bone-patellar tendon-bone graft underwent anterior cruciate Ligament revisions between the primary operation and the sixteen-year follow-up examination. The rate of revision was ten times higher in the group that had primary repair than in the group that had repair with bone-patellar tendon-bone graft (p = 0.003). In the remaining patients, those who had repair with a bone-patellar tendon-bone graft had significantly more stable knees than those who had repair with a Ligament Augmentation Device, as measured by the Lachman test (p = 0.026). Nine (11%) of the eighty-five patients for whom data were available had osteoarthritis in the primarily reconstructed knee, and three patients (3.5%) had osteoarthritis in the contralateral knee at sixteen years (p = 0.001); no difference was noted among the three groups. The mean Lysholm score at sixteen years was 88 points for the knees that had primary repair, 85 points for those that had repair with the Ligament Augmentation Device, and 90 points for those managed with a bone-patellar tendon-bone graft (p = 0.286). Conclusions At long-term (sixteen-year) follow-up, the rate of revision anterior cruciate Ligament surgery is much higher following primary repair than after primary repair augmented by a bone-patellar tendon-bone graft. It can be expected that approximately 10% of patients undergoing anterior cruciate Ligament reconstruction acutely will have osteoarthritis develop in the reconstructed knee. We no longer perform any of these surgical techniques as open procedures.

  • Anterior Cruciate Ligament Reconstruction with and without a Ligament Augmentation Device Results at 8-Year Follow-up
    The American journal of sports medicine, 2002
    Co-Authors: Jon Olav Drogset, Torbjørn Grøntvedt
    Abstract:

    Background: Ligament Augmentation Devices have been used in anterior cruciate Ligament reconstruction since the suggestion of Kennedy et al. in 1980 that such Devices would allow grafts to heal faster and more safely.Hypothesis: Patients who had Augmentation will have better outcomes after 8 years.Study Design: Prospective randomized case control study.Methods: Between 1991 and 1993, 100 patients were randomized to groups undergoing anterior cruciate Ligament reconstruction with bone-patellar tendon-bone grafts with (49) or without (51) use of a Kennedy Ligament Augmentation Device. Of these 100 patients, 94 were examined at an average of 8 years after surgery. Fifteen patients were excluded because of rupture in the other knee and 11 because of rerupture in the same knee.Results: Of the remaining 68 patients, the mean Lysholm function score was 84 in the Augmentation group and 87 in the control group. There was a statistically significant relationship between preoperatively detected cartilage injury and ...

C. G. Sacristan - One of the best experts on this subject based on the ideXlab platform.

  • semitendinosus kennedy Ligament Augmentation Device anterior cruciate Ligament reconstruction
    Clinical Orthopaedics and Related Research, 1992
    Co-Authors: F B Gomezcastresana, M N Bastos, C. G. Sacristan
    Abstract:

    This is a prospective study of 78 chronic unilateral isolated anterior cruciate Ligament (ACL) patients who were treated with an arthroscopically-assisted reconstruction technique using the semitendinosus tendon, occasionally associated with the gracilis, augmented with the Kennedy-Ligament Augmentation Device (LAD). There was a minimum two-year follow-up period (mean, 34.3 months; range, 24-50 months). Ligamentous surgery was always restricted to the ACL intraarticular reconstruction. Preoperative, intraoperative, and postoperative examinations at three, six, 12, 18, and 24 months, and every year thereafter, including subjective and objective evaluation with KT 1000 arthrometer laxity measurements, were completed. Two-year examination data were available on 77 (98.7%) of the 78 patients compared with preoperative data. The pivot shift (side-to-side difference) improved from 49.3% with Grade 0-1 to 92.2% with Grade 0-1. KT 1000 20-pound anterior drawer (greater than 5 mm side-to-side difference) improved from 49.3% (mean, 6 mm) to 91.1% (mean, 0.55 mm). KT 1000 maximum manual anterior drawer (greater than 5 mm side-to-side difference) improved from 21.9% (mean, 7.8 mm) to 97.4% (mean, 0.55 mm). After ACL reconstruction, 89.6% of patients had a full range of motion and only 10.3% had flexion contractures of less than 5 degrees; 5.2% of patients had mild effusion. Functional Lysholm knee scoring of 100 points improved from 7.7% scoring over 85 points preoperatively (mean, 66.5) to 92.1% postoperatively (mean, 95.6). Instability was controlled in 89.4% of the patients, and 71.4% have been involved in sports after injury. Anterior cruciate Ligament reconstruction reduces pathologic laxity, improves lower-leg function, and minimizes flexion contracture and effusion.

  • Semitendinosus Kennedy Ligament Augmentation Device anterior cruciate Ligament reconstruction : Advances in Spain
    Clinical Orthopaedics and Related Research, 1992
    Co-Authors: F. B. Gomez-castresana, M. N. Bastios, C. G. Sacristan
    Abstract:

    This is a prospective study of 78 chronic unilateral isolated anterior cruciate Ligament (ACL) patients who were treated with an arthroscopically-assisted reconstruction technique using the semitendinosus tendon, occasionally associated with the gracilis, augmented with the Kennedy-Ligament Augmentation Device (LAD). There was a minimum two-year follow-up period (mean, 34.3 months; range, 24-50 months)

Kohtaro Furuya - One of the best experts on this subject based on the ideXlab platform.

  • Recovery of extensor muscle strength in athletes after anterior cruciate Ligament reconstruction
    Journal of Orthopaedic Science, 1996
    Co-Authors: Sadao Niga, Haruyasu Yamamoto, Kohtaro Furuya
    Abstract:

    We investigated the effects of the use of different autograft materials on the early postoperative recovery of extensor muscle strength after anterior cruciate Ligament (ACL) reconstruction. Reconstruction was performed in 172 athletes with ACL-deficient knees; in 32, a quadriceps tendon-patellar tendon substitute (QTS) was used; in 79, semitendinosus and gracilis tendons (STG) were used; and in 61, a bone-patellar tendon-bone graft (BTB) was used. For QTS and STG autografts, a Ligament Augmentation Device was used. Each group received the same accelerated rehabilitation program. Muscle strength was measured periodically 3–18 months after the operation, using a Cybex II dynamometer (Cybex Division of Lumex, Ronkonkoma, NY, USA). Knee extensor strength was evaluated, using the side-to-side ratio and the body weight ratio, to give a precise assessment of permissible sporting activity. After a period of 1 year, the percentage of athletes who recovered their extensor muscle strength at a level more than 80% of that in the uninvolved knee was 15.6% for those with QTS grafts, 41.0% for those with BTB grafts, and 77.9% for those with STG grafts ( P

  • Evaluation of anterior cruciate reconstruction reinforced by the Kennedy Ligament Augmentation Device
    International Orthopaedics, 1995
    Co-Authors: Shintaro Asahina, Takeshi Muneta, Haruyasu Yamamoto, Toshiro Ishibashi, Kohtaro Furuya
    Abstract:

    Fifty anterior cruciate Ligament reconstructions with the Kennedy Ligament Augmentation Device were examined arthroscopically and histologically 6 to 61 months after operation. The autogenous segments used were the quadriceps tendon in 13 and the semitendinosus tendon, with or without gracilis, in 37. The arthroscopic findings were rated as good in 31, fair in 15 and poor in 4, and there was correlation between these grades and KT-1000 measurements. The histological findings were graded as good in 17, fair in 26 and poor in 4; these did not correlate with the arthroscopic grades but with the time interval after reconstruction. Maturation of the autogenous augmented segment was found to progress with time, but took more than 3 years to become complete. Cinquante reconstructions de Ligament croisé antérieur renforcés de Ligament synthétique ≪Kennedy lad≫ ont été examinées sous arthroscopie et histologiquement 6 à 61 mois après la chirurgie. Les segments autologues étaient formés de tendon quadricipital dans 13 cas et de tendon demi-tendineux avec ou sans droit interne dans 37 cas. En fonction du volume, de la tension et de la couverture synoviale, les résultats ont été classés bons dans 31 cas, moyens dans 15 et médiocres dans 4. Une corrélation a été retrouvée entre les degrés arthroscopiques et les mesures de KT-1000 (p< 0,0001). Les résultats histologiques ont été classés en 3 groupes en fonction de la disposition et de la structure en réseau des fibres collagènes et de la cellularité des fibroblastes. Ces résultats ont été classés bons dans 17 cas, moyens dans 26 et médiocres dans 4. Les degrés histologiques n'avaient pas de rapport avec les degrés arthroscopiques, mais étaient en relation avec le temps écoulé depuis la reconstruction (p

  • Evaluation of anterior cruciate reconstruction reinforced by the Kennedy Ligament Augmentation Device. An arthroscopic and histological study.
    International orthopaedics, 1995
    Co-Authors: Shintaro Asahina, Takeshi Muneta, Haruyasu Yamamoto, Toshiro Ishibashi, Kohtaro Furuya
    Abstract:

    Fifty anterior cruciate Ligament reconstructions with the Kennedy Ligament Augmentation Device were examined arthroscopically and histologically 6 to 61 months after operation. The autogenous segments used were the quadriceps tendon in 13 and the semitendinosus tendon, with or without gracilis, in 37. The arthroscopic findings were rated as good in 31, fair in 15 and poor in 4, and there was correlation between these grades and KT-1000 measurements. The histological findings were graded as good in 17, fair in 26 and poor in 4; these did not correlate with the arthroscopic grades but with the time interval after reconstruction. Maturation of the autogenous augmented segment was found to progress with time, but took more than 3 years to become complete.

  • The effects of tibial tunnel placement and roofplasty on reconstructed anterior cruciate Ligament knees.
    Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the Internation, 1995
    Co-Authors: Takeshi Muneta, Haruyasu Yamamoto, Toshiro Ishibashi, Shintaro Asahina, Shunich Murakami, Kohtaro Furuya
    Abstract:

    Seventy-five anterior cruciate Ligament (ACL) reconstructions augmented with the Kennedy Ligament Augmentation Device were evaluated according to classification of tibial drill-hole position on the basis of the anatomic landmarks of the ACL by two-dimensional radiographic imaging of the fully extended knee. The effects of roofplasty to avoid graft impingement were also assessed. The tibial drill-hole position was classified in relation to the medial intercondylar tubercle on anterior-posterior (AP) view, and in relation to Blumensaat's line (B-line) on lateral view. Arthroscopic evaluation of the ACL and incidence of chronic synovitis as well as Lysholm knee score, manual knee tests, knee extension and flexion angles, and knee tester measurements were performed. The results indicated that the knee joints in which the tibial drill hole was positioned laterally from the medial intercondylar tubercle or in which the tibial drill hole was positioned anteriorly to the B-line showed a tendency to develop more postoperative chronic synovitis. The knees in which the tibial drill hole was positioned anteriorly to the B-line also showed larger AP laxity. There was no difference between the non-roofplasty and roofplasty groups.

  • Effusions after anterior cruciate Ligament reconstruction using the Ligament Augmentation Device
    Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the Internation, 1992
    Co-Authors: Haruyasu Yamamoto, Takeshi Muneta, Toshiro Ishibashi, Kohtaro Furuya, Takayuki Mizuta
    Abstract:

    Persistent effusions occurred in 4.3% (seven patients) of 164 patients who underwent anterior cruciate Ligament (ACL) reconstruction using an autograft augmented with the Ligament Augmentation Device (LAD) between 1986 and 1989. No bacteria were cultured from the joint fluid. The radiograph in each case showed a tibial drill hole located anteriorly or anterolaterally. Arthroscopy confirmed an abraded LAD in six cases and breakage of the LAD in one case and impingement of the graft on the femoral condyle during extension. Under polarized light microscopy, the histology of the synovia showed foreign body giant cells in one case and particles among the proliferative cells in four cases. The effusions subsided in two cases after notchplasty and in five cases after removal of the LAD. Impingement of the graft on the femoral condyle due to incorrect positioning of the tibial drill hole presumably produced particles that induced synovitis and effusions.