Tendon Graft

14,000,000 Leading Edge Experts on the ideXlab platform

Scan Science and Technology

Contact Leading Edge Experts & Companies

Scan Science and Technology

Contact Leading Edge Experts & Companies

The Experts below are selected from a list of 318 Experts worldwide ranked by ideXlab platform

Freddie H. Fu - One of the best experts on this subject based on the ideXlab platform.

  • preoperative sonographic measurement can accurately predict quadrupled hamstring Tendon Graft diameter for acl reconstruction
    Knee Surgery Sports Traumatology Arthroscopy, 2019
    Co-Authors: Tetsuya Takenaga, Freddie H. Fu, Masahito Yoshida, Marcio Albers, Kanto Nagai, Tomomasa Nakamura, Kentaro Onishi
    Abstract:

    PURPOSE: Previous studies reported sonography was inferior to MRI to predict hamstring Tendon Graft diameter for ACL reconstruction. This study aimed to investigate the correlation between intraoperative hamstring Tendon Graft diameter and its preoperative measurement using different sonographic scanning protocol from previous studies. METHODS: Two cadaveric knees were utilized for validation. Sonographically guided gracilis Tendon (G) and semitendinosus Tendon (ST) injections were performed at myotendinous junction of sartorius using colored latex and then dissection was performed. In the clinical studies, 28 patients underwent primary ACL reconstruction were enrolled. Cross-sectional area (CSA) of G and ST were measured at myotendinous junction of Sartorius. The diameter of doubled G (2G), doubled ST (2ST) and quadrupled ST + G (4STG) were intraoperatively measured using Graft sizing devices with 0.5-mm increments. RESULTS: Cadaveric dissection showed the presence of latex on the surface of G and ST at myotendinous junction of Sartorius in all specimens. In the clinical studies, CSA of G, ST, and ST + G significantly correlated with diameter of 2G (r = 0.464, p = 0.039), 2ST (r = 0.712, p < 0.001), and 4STG (r = 0.792, p < 0.001), respectively. As a result of the simple linear regression analysis, 4STG diameter could be predicted by the following formula: 4.345 + 0.210 × CSA. The differences between calculated diameter by this formula and intraoperative 4STG diameter were within ± 0.5 mm in 89.3% (25/28) of subjects. CONCLUSIONS: The diameter of 2ST and 4STG can be reliably predicted based on sonographic CSA measurement preoperatively. Sonography is a cost-effective alternate to repeat MRI to predict hamstring Graft diameter preoperatively. LEVEL OF EVIDENCE: Diagnostic study; Level II.

  • evaluation of the semitendinosus Tendon Graft shift in the bone tunnel an experimental study
    Knee Surgery Sports Traumatology Arthroscopy, 2016
    Co-Authors: Masataka Fujii, Yusuke Sasaki, Daisuke Araki, Takayuki Furumatsu, Shinichi Miyazawa, Toshifumi Ozaki, Monica Linderosen, Patrick Smolinski, Freddie H. Fu
    Abstract:

    Purpose The purpose of this study was to measure the semitendinosus Tendon Graft shift at the tunnel aperture with Graft bending using a simulated femoral bone tunnel.

  • Tendon Graft revitalization using adult anterior cruciate ligament acl derived cd34 cell sheets for acl reconstruction
    Biomaterials, 2013
    Co-Authors: Yutaka Mifune, Tomoyuki Matsumoto, Koji Takayama, Satoshi Terada, Naosumi Sekiya, Ryosuke Kuroda, Masahiro Kurosaka, Freddie H. Fu
    Abstract:

    As a new strategy for enhancing recovery after anterior cruciate ligament (ACL) reconstruction, we developed a cell sheet wrapped Graft using ACL-derived CD34+ cells. Our results from an ex vivo cell migration assay demonstrated gradual cell migration into the Graft from the cell sheet, and an enzyme-linked immunosorbent assay indicated that the cell sheet cultures secreted a significantly greater amount of VEGF than typical monolayer cultures. In the in vivo study, the rats received one of three possible ACL reconstruction treatments; 1) a Tendon Graft wrapped in an ACL-derived CD34+ cell sheet, 2) a Tendon Graft and ACL-derived CD34+ cell injection, or 3) the control group that received just the Tendon Graft. The in vivo studies revealed that the ACL-derived CD34+ cell sheet wrapped Grafts demonstrated a greater number of the cells derived from the cell sheets incorporated within the bone tunnel site and Grafted Tendon. We believe the incorporated CD34+ cells enhanced the healing of both the bone–Tendon junction and the Grafted Tendon in the reconstructed rat ACLs by increasing proprioceptive recovery, Graft maturation, and biomechanical strength. ACL-derived CD34+ cell sheet wrapped Grafts could become a promising strategy to revitalize Tendon autoGrafts and recovery after ACL reconstruction resulting in superior and quicker recovery in patients requiring ACL reconstruction.

  • a biomechanical analysis of the native coracoclavicular ligaments and their influence on a new reconstruction using a coracoid tunnel and free Tendon Graft
    Arthroscopy, 2010
    Co-Authors: Freddie H. Fu, Andrew G Tsai, Anil S Ranawat, Mohit Bansal, Mark W Rodosky, Patrick Smolinski
    Abstract:

    PURPOSE: To understand and characterize the kinematic properties of the 2 coracoclavicular ligaments and to evaluate the biomechanical performance of a new 3-tunnel reconstruction of the coracoclavicular ligaments by use of a free Tendon Graft. METHODS: Ten fresh-frozen cadaveric shoulders were tested. The kinematics and in situ forces of the coracoclavicular ligaments were tested with a robotic testing system. Kinematics of the shoulder in the intact state, in the sectioned state, and finally, after a coracoclavicular reconstruction and a coracoclavicular sling reconstruction were evaluated. RESULTS: The conoid had higher in situ forces during anterior and superior loading of the clavicle when compared with the trapezoid ligament, whereas the trapezoid ligament had higher in situ forces during posterior loading. Sectioning the trapezoid ligament significantly increased translation of the clavicle in the posterior direction, whereas sectioning the conoid ligament significantly increased superior translation. When we compared the 2 reconstruction techniques, the coracoid tunnel reconstruction was superior in controlling anterior translation whereas the coracoclavicular sling reconstruction was inferior because of anterior displacement of the Graft. There was no significant difference in posterior or superior translation between either reconstruction technique. CONCLUSIONS: The trapezoid and conoid ligaments have unique functions in normal shoulder kinematics because of their anatomic attachments. By more faithfully restoring these insertion sites on the clavicle and controlling motion of the Graft on the coracoid, the 3-tunnel reconstruction technique more closely restores native shoulder kinematics than the coracoclavicular sling technique. CLINICAL RELEVANCE: Understanding the unique roles of the conoid and trapezoid bundles of the coracoclavicular ligament may improve surgical techniques in the management of acromioclavicular joint injuries. The reconstructive technique presented more faithfully restores normal kinematics and forces across the acromioclavicular joint than the coracoclavicular sling technique.

  • Biological considerations of Tendon Graft incorporation within the bone tunnel
    Operative Techniques in Orthopaedics, 2005
    Co-Authors: Boris A Zelle, Christian Lattermann, Anikar Chhabra, Freddie H. Fu, Johnny Huard
    Abstract:

    Incorporation of the Tendon Graft within the bone tunnel is crucial for a successful outcome after anterior cruciate ligament reconstruction. Previous studies demonstrated that the incorporation of the Tendon Graft may take up to several months. Thus, it is of concern whether the early Tendon–bone interface is strong enough to tolerate accelerated early postoperative rehabilitation. Biological solutions to enhance Tendon healing within the bone tunnel may allow further advances in anterior cruciate ligament surgery. Previous studies emphasized the important role of bone growth factors. In animal models, successful stimulation of Graft incorporation has been achieved by the application of bone morphogenetic protein-2. Moreover, periosteal enveloping of the Tendon Graft has shown to improve the healing response of the Tendon Graft within the bone tunnel, and preliminary clinical results appear promising. Further advances may be achieved by the use of tissue-engineered ligaments. Successful tissue engineering of ligaments requires optimized structural scaffolds, tissue specific cells, biological stimulation by growth factors, and mechanical stimulation by cyclic stretching.

Chih Hwa Chen - One of the best experts on this subject based on the ideXlab platform.

  • Strategies to enhance Tendon Graft--bone healing in anterior cruciate ligament reconstruction.
    Chang Gung medical journal, 2009
    Co-Authors: Chih Hwa Chen
    Abstract:

    : Tendon-bone incorporation of a Tendon Graft within the bone tunnel is a major concern when using a Tendon Graft for ligament reconstruction. Successful anterior cruciate ligament (ACL) reconstruction with a Tendon Graft requires solid healing of the Tendon Graft in the bone tunnels. Improvement of Graft healing to bone is crucial to facilitate early and aggressive rehabilitation and a rapid return to full activity. Healing of a Tendon Graft in a bone tunnel requires bone ingrowth into the Tendon. Indirect Sharpey fiber and direct fibrocartilage fixation of the Tendon-bone interface provide different anchorage strength and interface properties. Based on normal ACL structure and the function of the insertion site, the ideal Tendon Graft would attach broadly to the surface of the bone at the femoral and tibial attachment sites by an intermediate zone of fibrocartilage. Theoretically, interface fibrocartilage formation as the translational structure from ligament to bone is physiological and functional. Our strategies to enhance Tendon Graft to bone healing, including the use of periosteum and a hydrogel containing periosteal progenitor cell and bone morphogenetic protein-2, are described. For clinical application, satisfactory results for ACL reconstruction can be achieved with the use of a periosteum-enveloped hamstring Tendon Graft.

  • photoencapsulation of bone morphogenetic protein 2 and periosteal progenitor cells improve Tendon Graft healing in a bone tunnel
    American Journal of Sports Medicine, 2008
    Co-Authors: Chih Hwa Chen, Chinglin Tsai, Chungming Yu, Gingho Hsiue
    Abstract:

    BackgroundTissue-engineered solutions for promoting the Tendon Graft incorporation within the bone tunnel appear to be promising.HypothesisTo determine the feasibility that conjugation of hyaluronic acid-tethered bone morphogenetic protein-2 can be used to stimulate periosteal progenitor cells direct fibrocartilagenous attachment and new bone formation in an extra-articular Tendon-bone healing model.Study DesignControlled laboratory study.MethodsA total of 42 mature New Zealand White rabbits were used. The long digitorum extensor Tendon was transplanted into a bone tunnel of the proximal tibia. The Tendon was pulled through a drill hole in the proximal tibia and attached to the medial aspect of the tibia. Photopolymerizable hydrogel based on poly (ethylene glycol) diacrylate with hyaluronic acid-tethered bone morphogenetic protein-2 was injected and photogelated in a bone tunnel. Histological and biomechanical examination of the Tendon-bone interface was evaluated at postoperative weeks 3 and 6.ResultsHis...

  • Arthroscopic anterior cruciate ligament reconstruction with periosteum-enveloping hamstring Tendon Graft
    Knee Surgery Sports Traumatology Arthroscopy, 2004
    Co-Authors: Chih Hwa Chen, Wen-jer Chen, Chun-hsiung Shih, Shih-wei Chou
    Abstract:

    Tendon–bone incorporation of a Tendon Graft within the bone tunnel is of priority concern when using for anterior cruciate ligament (ACL) reconstruction. Superior healing process and stronger healing strength can be achieved when periosteum is sutured on the Tendon inserted into a bone tunnel. We applied this idea to ACL reconstruction for enhancing Tendon Graft–bone tunnel healing. This is a prospective clinical outcome study with this surgical technique at minimal 2 years follow-up. Periosteum-enveloping hamstring Tendon Graft has been used in 68 patients. Data from 62 patients who had been followed up completely were analyzed. All patients suffered from a grade 3 or higher grade of Lachman and anterior drawer test with a positive pivot-shift test. Clinical assessments included the Lysholm knee scores, International Knee Documentation Committee (IKDC) scores, KT-1000 instrumented testing, thigh muscle assessment, and radiographic evaluation. The median Lysholm knee score was 59 (40–70) and 94 (60–100) points ( P

  • Double-bundle posterior cruciate ligament reconstruction with quadriceps and semitendinosus Tendon Grafts.
    Arthroscopy, 2003
    Co-Authors: Chih Hwa Chen, Wen-jer Chen, Chun-hsiung Shih
    Abstract:

    This study presents a novel arthroscopic technique for double-bundle reconstruction of the posterior cruciate ligament. A quadriceps Tendon-patellar bone autoGraft is used to reconstruct the major anterolateral bundle. An additional double-stranded semitendinosus Tendon is used to reconstruct the posteromedial bundle. In 70° of flexion and full extension with anterior drawer force, the quadriceps Tendon Graft and semitendinosus Tendon Graft are fixed inside the anterior aspect of the single tibial tunnel, respectively. An anatomic reconstruction can be achieved by using these 2 autoGrafts.

  • enveloping the Tendon Graft with periosteum to enhance Tendon bone healing in a bone tunnel a biomechanical and histologic study in rabbits
    Arthroscopy, 2003
    Co-Authors: Chih Hwa Chen, Wen-jer Chen, Chun-hsiung Shih, Chung Yeung Yang
    Abstract:

    Purpose: Fixing and incorporating the Tendon Graft within the bone tunnel is a major concern when using Grafts for ligament reconstruction. The periosteum contains multipotent stem cells and has the potential to form osteogenic and chondrogenic tissues. This study uses histologic and biomechanical analyses to examine the effect of periosteum on Tendon-bone healing within a bone tunnel. Type of Study: Experimental study in an animal model. Methods: In this study, 36 adult New Zealand White rabbits were used. The long digitorum extensor Tendon was transplanted into a bone tunnel of the proximal tibia. The periosteum from the proximal tibia was sutured on the surface of the Tendon portion. The Tendon was pulled through a drill-hole in the proximal tibia and attached to the medial aspect of the tibia. Histologic examination of the Tendon-bone interface and biomechanical test for maximal pullout load were evaluated at 4, 8, and 12 weeks after operation. Results: Histologic analysis of the Tendon-bone interface showed a fibrous layer formed between the Tendon and the bone by the periosteum. This layer became progressively integrated with the Tendon and bone surface during the healing process. At 4 weeks, the cancellous bone lining in the bone tunnel was interdigitated with the fibrous interface tissue. At 8 weeks, progressive new bone grew into the interface fibrous layer. At 12 weeks, collagen fibers anchored to the bone and organization with fibrocartilage formation developed between the Tendon and bone. Biomechanical testing revealed higher maximal pullout strength in the periosteum-enveloped group at all time points, with a statistically significant difference at 8 and 12 weeks. The periosteum-treated group had a higher interface strength-to-length ratio and significant increase at 8 weeks and 12 weeks. Conclusions: The histologic and biomechanical studies demonstrated that, if periosteum was sutured on the Tendon that was transplanted within a bone tunnel, it resulted in a superior healing process and better healed strength. When doing ligament reconstruction with a Tendon Graft, the periosteum can be sutured to the Graft to enhance Tendon-bone healing.

Vincenzo Denaro - One of the best experts on this subject based on the ideXlab platform.

  • ipsilateral hamstring Tendon Graft reconstruction for chronic patellar Tendon ruptures average 5 8 year follow up
    Journal of Bone and Joint Surgery American Volume, 2013
    Co-Authors: Nicola Maffulli, Mattia Loppini, Angelo Del Buono, Vincenzo Denaro
    Abstract:

    Background: Patellar Tendon reconstruction is technically demanding and is indicated in patients with chronic ruptures (i.e., still present more than six weeks after injury). The purpose of this study was to assess the effectiveness of this procedure in patients with impaired function following patellar Tendon rupture. Methods: Nineteen patients underwent autologous ipsilateral hamstring Tendon Graft reconstruction for management of a chronic patellar Tendon rupture. The clinical diagnosis was supported by imaging radiographs and magnetic resonance imaging. The modified Cincinnati rating system questionnaire and the Kujala scoring questionnaire were administered preoperatively and at the last examination, an average follow-up of 5.8 years (range, four to 7.8 years) postoperatively. Thigh volume, cross-sectional area of the thigh (muscle and bone), and the maximum isometric voluntary contraction strength of the extensor apparatus of the knee were measured bilaterally in all nineteen patients. Results: At the last follow-up visit, knee flexion had increased from a mean of 110° preoperatively to a mean of 132° and extension lag had significantly decreased from 20° preoperatively to 3°; the mean modified Cincinnati and Kujala scores were notably improved. All patients had returned to ordinary daily activities. Fourteen of nineteen patients were very satisfied with the procedure, three were satisfied, one was moderately satisfied, and one was unsatisfied. Conclusions: On the basis of our review of nineteen patients, hamstring Tendon reconstruction of chronic patellar Tendon rupture provided good functional recovery and return to preinjury daily activities. Level of Evidence: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

  • minimally invasive reconstruction of chronic achilles Tendon ruptures using the ipsilateral free semitendinosus Tendon Graft and interference screw fixation
    American Journal of Sports Medicine, 2013
    Co-Authors: Nicola Maffulli, Mattia Loppini, Umile Giuseppe Longo, Gayle D Maffulli, Vincenzo Denaro
    Abstract:

    Background:Achilles Tendon ruptures represent more than 40% of all Tendon ruptures requiring surgical management. About 20% of acute Achilles Tendon tears are not diagnosed at the time of injury and become chronic, necessitating more complicated management than fresh injuries. Several techniques for the reconstruction of chronic tears of the Achilles Tendon have been described, but the superiority of one technique over the others has not been demonstrated.Hypothesis:Mini-invasive reconstruction of the Achilles Tendon, with a gap lesion larger than 6 cm, using the ipsilateral free semitendinosus Tendon Graft will result in improvement of the overall function with a low rate of complications.Study Design:Case series; Level of evidence, 4.Methods:Between 2008 and 2010, the authors prospectively enrolled 28 consecutive patients (21 men and 7 women; median age, 46 years) with chronic closed ruptures of the Achilles Tendon who had undergone reconstruction with a free semitendinosus Tendon Graft. They assessed t...

  • free gracilis Tendon Graft for reconstruction of chronic tears of the achilles Tendon
    Journal of Bone and Joint Surgery American Volume, 2012
    Co-Authors: Nicola Maffulli, Umile Giuseppe Longo, Filippo Spiezia, Vittorino Testa, Giovanni Capasso, Vincenzo Denaro
    Abstract:

    Background: Chronic tears of the Achilles Tendon with a Tendon gap exceeding 6 cm are a surgical challenge. The purpose of this study is to report the long-term results of reconstruction of such chronic Achilles Tendon ruptures with use of a free autologous gracilis Tendon Graft. Methods: Twenty-one patients underwent reconstruction of a chronic rupture of the Achilles Tendon. Fifteen patients were available for clinical and functional assessment on the basis of anthropometric measurements, isometric strength testing, and the Achilles Tendon Total Rupture Score after a mean duration of follow-up of 10.9 years (range, eight to twelve years). Results: All fifteen patients were able to walk on the tiptoes, and no patient used a heel lift or walked with a visible limp. At an average of 10.9 years of follow-up, the maximum calf circumference of the operatively treated leg remained substantially decreased and the operatively treated limb was significantly weaker than the contralateral, normal limb. Two patients had developed tendinopathy of the contralateral Achilles Tendon, one had developed tendinopathy of the reconstructed Tendon, and one had ruptured the contralateral Achilles Tendon eight years after the index tear. Conclusions: The long-term results of treatment of chronic tears of the Achilles Tendon with free gracilis Tendon Grafting showed that patients retained good functional results despite permanently impaired ankle plantar flexion strength and decreased calf circumference. Level of Evidence: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

Nicola Maffulli - One of the best experts on this subject based on the ideXlab platform.

  • ipsilateral hamstring Tendon Graft reconstruction for chronic patellar Tendon ruptures average 5 8 year follow up
    Journal of Bone and Joint Surgery American Volume, 2013
    Co-Authors: Nicola Maffulli, Mattia Loppini, Angelo Del Buono, Vincenzo Denaro
    Abstract:

    Background: Patellar Tendon reconstruction is technically demanding and is indicated in patients with chronic ruptures (i.e., still present more than six weeks after injury). The purpose of this study was to assess the effectiveness of this procedure in patients with impaired function following patellar Tendon rupture. Methods: Nineteen patients underwent autologous ipsilateral hamstring Tendon Graft reconstruction for management of a chronic patellar Tendon rupture. The clinical diagnosis was supported by imaging radiographs and magnetic resonance imaging. The modified Cincinnati rating system questionnaire and the Kujala scoring questionnaire were administered preoperatively and at the last examination, an average follow-up of 5.8 years (range, four to 7.8 years) postoperatively. Thigh volume, cross-sectional area of the thigh (muscle and bone), and the maximum isometric voluntary contraction strength of the extensor apparatus of the knee were measured bilaterally in all nineteen patients. Results: At the last follow-up visit, knee flexion had increased from a mean of 110° preoperatively to a mean of 132° and extension lag had significantly decreased from 20° preoperatively to 3°; the mean modified Cincinnati and Kujala scores were notably improved. All patients had returned to ordinary daily activities. Fourteen of nineteen patients were very satisfied with the procedure, three were satisfied, one was moderately satisfied, and one was unsatisfied. Conclusions: On the basis of our review of nineteen patients, hamstring Tendon reconstruction of chronic patellar Tendon rupture provided good functional recovery and return to preinjury daily activities. Level of Evidence: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

  • minimally invasive reconstruction of chronic achilles Tendon ruptures using the ipsilateral free semitendinosus Tendon Graft and interference screw fixation
    American Journal of Sports Medicine, 2013
    Co-Authors: Nicola Maffulli, Mattia Loppini, Umile Giuseppe Longo, Gayle D Maffulli, Vincenzo Denaro
    Abstract:

    Background:Achilles Tendon ruptures represent more than 40% of all Tendon ruptures requiring surgical management. About 20% of acute Achilles Tendon tears are not diagnosed at the time of injury and become chronic, necessitating more complicated management than fresh injuries. Several techniques for the reconstruction of chronic tears of the Achilles Tendon have been described, but the superiority of one technique over the others has not been demonstrated.Hypothesis:Mini-invasive reconstruction of the Achilles Tendon, with a gap lesion larger than 6 cm, using the ipsilateral free semitendinosus Tendon Graft will result in improvement of the overall function with a low rate of complications.Study Design:Case series; Level of evidence, 4.Methods:Between 2008 and 2010, the authors prospectively enrolled 28 consecutive patients (21 men and 7 women; median age, 46 years) with chronic closed ruptures of the Achilles Tendon who had undergone reconstruction with a free semitendinosus Tendon Graft. They assessed t...

  • free gracilis Tendon Graft for reconstruction of chronic tears of the achilles Tendon
    Journal of Bone and Joint Surgery American Volume, 2012
    Co-Authors: Nicola Maffulli, Umile Giuseppe Longo, Filippo Spiezia, Vittorino Testa, Giovanni Capasso, Vincenzo Denaro
    Abstract:

    Background: Chronic tears of the Achilles Tendon with a Tendon gap exceeding 6 cm are a surgical challenge. The purpose of this study is to report the long-term results of reconstruction of such chronic Achilles Tendon ruptures with use of a free autologous gracilis Tendon Graft. Methods: Twenty-one patients underwent reconstruction of a chronic rupture of the Achilles Tendon. Fifteen patients were available for clinical and functional assessment on the basis of anthropometric measurements, isometric strength testing, and the Achilles Tendon Total Rupture Score after a mean duration of follow-up of 10.9 years (range, eight to twelve years). Results: All fifteen patients were able to walk on the tiptoes, and no patient used a heel lift or walked with a visible limp. At an average of 10.9 years of follow-up, the maximum calf circumference of the operatively treated leg remained substantially decreased and the operatively treated limb was significantly weaker than the contralateral, normal limb. Two patients had developed tendinopathy of the contralateral Achilles Tendon, one had developed tendinopathy of the reconstructed Tendon, and one had ruptured the contralateral Achilles Tendon eight years after the index tear. Conclusions: The long-term results of treatment of chronic tears of the Achilles Tendon with free gracilis Tendon Grafting showed that patients retained good functional results despite permanently impaired ankle plantar flexion strength and decreased calf circumference. Level of Evidence: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

  • free gracilis Tendon Graft in neglected tears of the achilles Tendon
    Orthopaedic Proceedings, 2008
    Co-Authors: Nicola Maffulli, Wayne B Leadbetter
    Abstract:

    Introduction: Neglected Achilles Tendon ruptures are a management challenge. Several surgical techniques have been described. A two centre, two surgeon, two year longitudinal study was undertaken to report the results of reconstruction of neglected Achilles Tendon rupture using a free autologous gracilis Tendon Graft Methods: Fourteen patients underwent surgery for a neglected rupture of the Achilles Tendon occurring between 65 days and nine months before the operation. All were prospectively followed up for two years. Results: No patients experienced any problems in the wound used to harvest the Tendon of gracilis. Four patients were managed conservatively following a superficial infection of the achilles Tendon surgical wound. No patients developed a deep vein thrombosis or sustained a re-rupture. All patients were able to walk on tiptoes, and no patient used a heel raise or walked with a visible limp. The maximum calf circumference remained significantly decreased in the operated leg at latest follow up. The operated limb was significantly less strong than the non-operated one. Conclusions: The management of neglected subcutaneous tears of the Achilles Tendon by free gracilis Tendon Grafting is safe but technically demanding. It affords good recovery, even in patients with a neglected rupture of nine months’ duration. These patients should be warned that they are at risk of post-operative complications, and that their ankle plantar flexion strength can remain reduced.

Herbert Resch - One of the best experts on this subject based on the ideXlab platform.

  • semitendinosus Tendon Graft versus a modified weaver dunn procedure for acromioclavicular joint reconstruction in chronic cases a prospective comparative study
    American Journal of Sports Medicine, 2009
    Co-Authors: Mark Tauber, Katharina Gordon, Heiko Koller, Herbert Resch
    Abstract:

    BackgroundBiomechanical studies comparing various surgical techniques for acromioclavicular joint reconstruction have reported that semitendinosus Tendon Graft for coracoclavicular ligament reconstruction provides a substantial improvement in initial stability and a load-to-failure equivalent to the intact coracoclavicular ligaments. Although it represents a biomechanical improvement compared with coracoacromial ligament transfer, there is still a lack of prospective comparative studies confirming the clinical relevance of these biomechanical findings.HypothesisSemitendinosus Tendon Graft for coracoclavicular ligament reconstruction is associated with superior clinical results compared with a modified Weaver-Dunn procedure in chronic complete acromioclavicular joint dislocation.Study DesignCohort study; Level of evidence, 2.MethodsTwenty-four patients (mean age, 42 years) with painful, chronic Rockwood type III through V acromioclavicular joint dislocations were subjected to surgical reconstruction. In 12...

  • acromioclavicular reconstruction using autogenous semitendinosus Tendon Graft results of revision surgery in chronic cases
    Journal of Shoulder and Elbow Surgery, 2007
    Co-Authors: Mark Tauber, Manfred Eppel, Herbert Resch
    Abstract:

    Revision surgery of acromioclavicular dislocation is challenging owing to the altered anatomic relationships and the lack of stabilizing structures. In this study, an autogenous semitendinosus Tendon Graft was used for revision acromioclavicular stabilization, aiming at anatomic coracoclavicular reconstruction, as these patients had previously undergone a Weaver-Dunn procedure, which failed. Twelve patients were followed up clinically and radiographically for a mean of 49.5 months. The primary diagnosis was acromioclavicular joint dislocation Rockwood type III in 6, type IV in 4, and type V in 2 cases. At follow-up, the mean Constant score averaged 76.4 points. Pain relief was statistically significant (P

Related terms

Tendon Graft - 15 days free trial to Access Experts & Abstracts