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At least 19 recordsLinked to original sources

PubMedDate not supplied

[Percutaneous tenodesis of the Achilles tendon. A new surgical method for treatment of acute Achilles tendon rupture using percutaneous tenodesis].

APPROACH TO THE PROBLEM: Various studies (3, 6, 9, 14, 22, 28, 30, 33) have shown that, on average (26), the surgical treatment of a freshly ruptured Achilles tendon can be considered a more appropriate and better treatment than a conservative immobilisation therapy. On the other hand the rate of complications in openly executed reconstructions is quite considerable at 11-29% (13, 19, 20, 31). It therefore seems reasonable to develop a process which, by using minimal invasive measures on the tendon, reduces the risk of complications arising from surgery and simultaneously makes an early post operative treatment encouraging maximum mobility possible. METHOD: We have developed a percutaneous tenodesis of the Achilles tendon using two Lengemann extension wires and fibrin bonding at the point of rupture (8, 18). This process has been applied to 21 patients since 1995. Check-up period for further examination: 1 year. RESULTS: Exclusively male patients have been treated, average age 42 years. The Achilles tendon ruptures occurred in sporting activities and were handled with operations in an average time span of 22 hours. In one case there was a re-rupture resulting from traumatic conditions. All other results were good to very good and free of complications. CONCLUSIONS: The percutaneous tenodesis of the Achilles tendon using Lengemann extension wires and fibrin bonding provides a simple, good value and reliable process which should be used for freshly occurred Achilles tendon ruptures. CLINICAL RELEVANCE: Particularly worthy of mention are the problem-free treatment, the good results and the broad acceptance by the patients. These advantages make the demonstrated process ideal for routine clinical application.

Achilles Tendon↗

PubMed1999

Percutaneous tenodesis of the Achilles tendon. A new surgical method for the treatment of acute Achilles tendon rupture through percutaneous tenodesis.

Various studies have shown that the operative treatment of a freshly ruptured Achilles tendon is generally considered to be more appropriate than a nonoperative regimen. However, complications in open reconstructions are reported to occur between 11-29%. We intended to develop a method which reduces the risk of complications arising from operation but simultaneously allows early postoperative mobilization and functional treatment. We developed a percutaneous tenodesis of the Achilles tendon, using two Lengemann extension wires for adaptation of the ruptured tendon. This method of treatment has been applied in 20 patients. The postoperative observation period was one year. All patients were male, their average age was 42 years. The Achilles tendon ruptures occurred during sporting activities and were treated by operation within 22 h on average. The outcome was very good in 95%. One patient (5%) suffered a rerupture due to trauma. There was no other complication.

Achilles Tendon↗

PubMed1987

Classification of the main tenodesis techniques used in hand surgery.

The authors put forward a simple classification of the main types of tenodesis used in hand surgery. This classification is based on the theoretical mechanical effects of different tenodesis techniques. It separates simple tenodesis, which overrides only one joint, from dynamic tenodesis, which crosses two or more joints, and further subdivides "direct" and "crossed" dynamic tenodesis. Direct tenodesis is situated on the same side as the rotation axis of the joints, whereas crossed tenodesis crosses those rotation axes. The concept of "reciprocal" tenodesis effect is also introduced. Many different examples are used to illustrate this classification, with appropriate illustrations.

Hand↗

PubMedDate not supplied

The effect of an iliotibial tenodesis on intraarticular graft forces and knee joint motion.

Lateral extraarticular reconstructions are used as isolated procedures in knees with moderate rotatory instability and as "backups" in knees requiring primary repair or intraarticular reconstruction for major rotatory instability. We used an experimental knee testing system to analyze the immediate postoperative mechanical effect of an iliotibial band tenodesis on an intraarticular reconstruction of the ACL in fresh cadaver knees using a composite graft consisting of a bone-patellar tendonbone segment augmented with the Kennedy Ligament Augmentation Device (LAD, 3M Co., St. Paul, MN). The intraarticular graft was standardized by using a forcesetting technique. Ligament and graft forces were measured using buckle transducers, and joint motion was measured using an instrumented spatial linkage as 90 N anteriorly directed tibial loads were applied to seven fresh knee specimens at 0 degrees, 30 degrees, 60 degrees, and 90 degrees of flexion. The following knee states were tested in each specimen: intact ACL, excised ACL, intraarticular reconstruction, intraarticular reconstruction with the tenodesis added, and tenodesis with the intraarticular reconstruction added. Adding the iliotibial band tenodesis to an existing standardized intraarticular reconstruction significantly decreased the force in the ACL composite graft by an average of 43%. When the standardized intraarticular reconstruction was added to an existing tenodesis, the graft forces were an average of 15% below the level of when the reconstruction was performed alone. The force in the tenodesis was significantly less than the composite graft force at extension; however, the differences between the tenodesis and total graft force were not significant from 30 degrees to 90 degrees of flexion.(ABSTRACT TRUNCATED AT 250 WORDS)

Biomechanical Phenomena↗

PubMedDate not supplied

The cosmetic appearance of the biceps muscle after long-head tenotomy versus tenodesis.

PURPOSE: This study evaluates the cosmetic appearance of the biceps muscle after arthroscopic, intra-articular biceps tenotomy versus tenodesis by presenting subjective outcome results in patients with refractive bicipital pain. TYPE OF STUDY: Retrospective study evaluating clinical follow-up of patients with refractive and chronic bicipital pain. METHODS: Five consecutive years of patients receiving biceps tenotomy (80 patients; 40 males, 40 females; average age, 58 years) or tenodesis (80 patients; 51 males, 29 females; average age, 54 years) procedures were retrospectively followed-up by grading anterior shoulder pain, muscle spasms in the biceps, and cosmetic deformity of the biceps muscle. Statistics were done by chi(2) analysis. RESULTS: When assessing the follow-up questions, no statistical significance was found between the biceps tenotomy and biceps tenodesis groups. There was also no statistical significance when comparing the biceps tenotomy and biceps tenodesis groups when evaluating only the men, women, and men versus women with respect to the questions assessed. CONCLUSIONS: In the majority of patients in which a biceps tenotomy is performed, we note that the cosmetic appearance of the biceps muscle, the grade of muscle spasms of the biceps, and the level of anterior shoulder pain would present with little difference than if a tenodesis had been performed. Therefore, a biceps tenotomy may be a reasonable alternative to a biceps tenodesis in patients with refractive and chronic bicipital pain.

Adult↗

PubMedDate not supplied

An in vitro study of the Müller anterolateral femorotibial ligament tenodesis in the anterior cruciate ligament deficient knee.

The biomechanical effectiveness of the Müller anterolateral femorotibial ligament (ALFTL) iliotibial band tenodesis on anterior stability and internal rotational stability of the ACL deficient knee was investigated in six cadaver knees. Anterior drawer and internal rotation of the tibia were measured at 15 degrees increments from 0 degrees to 90 degrees in response to 50 N of anteriorly applied tibial force and 3 Nm of internally applied internal torque, respectively, in the intact knee, the ACL excised knee, and following the ALFTL reconstruction. A strain gage was used to measure the resting graft tension and to measure strain in the graft during the load-displacement tests. The Müller ALFTL tenodesis failed to return normal anterior stability to the ACL deficient knee (P less than 0.05). The tenodesis did, however, reduce the anterior laxity of the ACL deficient knee from 30 degrees to 90 degrees of knee flexion (P less than 0.05). The tenodesis overconstrained internal tibial rotation of the ACL excised knee from 30 degrees to 90 degrees (P less than 0.05). Measurements of strain in the tenodesis supported the load-displacement findings that the tenodesis was most effective in constraining anterior drawer and internal tibial rotation from 30 degrees to 90 degrees of knee flexion.

Adult↗

PubMedDate not supplied

Biceps tendon tenodesis for posterolateral instability of the knee. An in vitro study.

The effects of biceps tendon tenodesis on internal-external and varus-valgus laxity were measured using fresh-frozen cadaveric specimens that had undergone sequential sectioning of the posterolateral structures and of the fibular collateral ligament. Tenodesis (using 89 N graft tension and a fixation point located 1 cm anterior to the fibular collateral ligament's insertion on the femur) was effective in restoring external rotation and varus laxity; the procedure actually overconstrained external tibial rotation at all flexion positions and varus angulation at 60 degrees and 90 degrees of flexion. Internal rotation and valgus laxity were unaffected by the tenodesis procedure. The anterior fixation point was more effective in reducing laxity than a fixation point located 1 cm proximal to the fibular collateral ligament insertion. Tenodesis using the proximal fixation point, which was nonisometric, did not restore external rotation and varus laxities to intact values at 60 degrees and 90 degrees of knee flexion. Graft tension (45 or 89 N) had no measurable effect on the results of the tenodesis. This study has demonstrated that the biceps tenodesis procedure is effective for reducing static laxity in the knee with posterolateral instability.

Biomechanical Phenomena↗

PubMedDate not supplied

Iliotibial band tenodesis: a new strategy for attachment.

We investigated the changes in distance between Gerdy's tubercle on the tibia and points on the posterior two thirds of the lateral surface of the lateral femoral condyle and adjacent lateral femoral shaft in 15 cadaveric knees. A three-dimensional digitizer was used to quantify motion of the knee during flexion ranging from full extension to 120 degrees of flexion. Four load states were applied: internal, external, and neutral rotation, and quadriceps muscles loads based on one third of values in the literature for maximal isometric quadriceps muscles moments. The femoral location most isometric to Gerdy's tubercle was found to be strongly influenced by the load state. A 1.0 cm wide iliotibial band tenodesis was modelled by five straight lines arising from Gerdy's tubercle and attaching to a simulated washer at the junction of the lateral femoral condyle and shaft. Using this model and the motion data obtained from the cadavers, we investigated the effects of quadriceps muscles loading and external rotation of the knee on changes in the distances between these tibial and femoral attachments for each of the five lines. A 180 degrees twist modelled into the tenodesis significantly reduced the range of changes in distance (difference between the largest and smallest changes in distance among the lines for a given angle of flexion) for both of these load states. Therefore, a 180 degrees twist in the tenodesis can enhance isometry among the fibers of the tenodesis. This implies that a 180 degrees twist can enhance load sharing among the fibers of the tenodesis and, therefore, enhance the overall strength of the tenodesis.

Adult↗

PubMed1996

Tenodesis versus carbon fiber repair of ankle ligaments: a clinical comparison.

To compare the clinical and functional outcomes after using different reconstruction methods for chronic ankle instability, the authors followed 2 groups of patients after 69 and 72 months, respectively. Thirty patients (mean age, 28; range, 23-39 years) were treated with modified Evans tenodesis. Twenty-three patients (mean age, 32.2; range, 22-39 years) underwent total replacement of the lateral ankle ligaments by carbon fibers. The protocol of the retrospective study included a questionnaire, clinical examination, radiographic stress diagnostics, and gait analysis with use of the EMED-SF system. Dorsiflexion and inversion were significantly restricted after tenodesis in contrast to the carbon fiber replacement. Although radiographic stability was improved after surgery for both groups, progress of the arthrosis could not be stopped. After tenodesis, the measurement of plantar pressure distribution revealed a 20% increase of midfoot loading as compared with the opposite foot, whereas symmetrical loading of both feet was found after carbon fiber replacement. Additionally, the tenodesis feet had a significantly increased loading of the medial side of the foot. It was concluded that tenodesis and anatomic reconstruction of ankle ligaments lead to subjectively similar results. Foot function and range of motion, however, were less influenced after anatomic repair.

Adult↗

PubMed2002

[The role of the long head of the biceps in subacromial impingement syndrome and arthroscopic assisted tenodesis].

OBJECTIVES: Tenosynovitis of the long head of the biceps tendon, which commonly accompanies subacromial impingement syndrome, is one of the most important underlying cause of shoulder pain. We evaluated our experience with arthroscopic subacromial decompression and tenodesis of the long head of the biceps using mini-open approach. METHODS: Among patients who underwent arthroscopic subacromial decompression (112 patients) alone or in combination with mini-open rotator cuff repair (55 patients), 19 patients (11%; 12 females, 7 males; mean age 47 years, range 42 to 62 years) had tenodesis of the long head of the biceps. During arthroscopy of the glenohumeral joint, the decision for tenodesis was based on the presence of irreversible findings of chronic inflammation such as atrophy, excessive fraying, or partial rupture. The patients were divided into two groups depending on the surgery, namely, mini-open rotator cuff repair (group 1, 9 patients) and arthroscopic subacromial decompression alone (group 2, 10 patients). The mean follow-up was 17.6 months in group 1 (range 12 to 28 months), and 19.6 months in group 2 (range 12 to 40 months). RESULTS: Seven patients in group 1 (78%) did not complain about pain, while two patients had pain after vigorous physical activity. In group 2, nine patients (90%) were pain-free, whereas one patient had moderate pain. None of the patients had any cosmetic deformity. Two patients in group 1, and one patient in group 2 had mild biceps spasms. CONCLUSION: Despite the small sample size and a relatively short follow-up period, our results for tenodesis may be regarded as satisfactory. Special attention should be paid to the arthroscopic evaluation of the biceps tendon and tenodesis may be inevitable in the presence of chronic changes.

Adult↗

PubMedDate not supplied

Lateral hindfoot instability treated with the Evans tenodesis: a biomechanical analysis.

The stabilizing effect of the Evans tenodesis on movements in the tibiotalocalcaneal joint complex was studied in 10 amputation specimens, using a kinesiologic testing device. The tenodesis was tested following solitary lesion of the anterior talofibular ligament and after combined lesions of the anterior talofibular and calcaneofibular ligaments. All tenodeses were performed with the joint complex in the neutral position. Regardless of the extent of ligamentous damage, the tenodesis frequently restricted adduction and internal rotation to a level below that recorded at intact ligaments. Instability in external rotation in the joint complex and anteroposterior laxity of the talus were never completely reconstructed, regardless of what degree of flexion in the joint complex the tenodeses were tested. The study demonstrates that, if performed with the tibiotalocalcaneal joint complex in the neutral position, the Evans tenodesis cannot reconstruct normal hindfoot kinematics, irrespective of the extent of ligamentous damage. However, severe instability in adduction and internal rotation, both part of clinical supination, were effectively prevented by the tenodesis.

Aged↗

PubMedDate not supplied

Principles of conservative management for a non-orthotic tenodesis grip in tetraplegics.

The effectiveness of a tenodesis grip is determined by the passive properties of the hand. An effective tenodesis grip can be achieved by encouraging a decrease in the resting length (i.e., adaptive shortening) of the flexor digitorum profundus and the flexor digitorum superficialis so that the fingers flex when the wrist is extended. Also, adaptive shortening of the flexor pollicis longus needs to be encouraged so that the thumb approximates the flexed fingers when the wrist is extended. The length of the adductor pollicis will in part dictate where along the radial side of the index finger the thumb will contact. Development of an effective tenodesis grip also requires that excessive metacarpophalangeal and interphalangeal joint stiffness of the fingers be prevented and that the interphalangeal joint of the thumb become stiff in extension. Careful management of the tetraplegic hand can ensure the development of the musculoskeletal changes necessary for an effective tenodesis grip.

Fingers↗

PubMed2002

[Extensor tenodesis to the retinaculum extensorum: anatomic and biomechanical study].

INTRODUCTION: The extensor tenodesis is a direct dynamic tenodesis which is activated by wrist flexion due either to hand weight or flexor carpi radialis. This tenodesis is usually performed to the distal radius, but it is possible to fix EDC (extensor digitorum communis) to the retinaculum extensorum. MATERIAL AND METHODS: Biomechanical study concerned 12 anatomical subjects (24 wrists). The biometric and radiological analysis of retinaculum displacement distalwards was made under low (1 kg) and moderate (6 kg) pulling. Surgical clips were placed on the proximal and distal limits of the retinaculum in order to study their positions on roentgenograms. RESULTS: Average width of the retinaculum was 19 mm. Average movement under 1 kg drive was 6 mm and 8.6 mm under 6 kg drive. X-rays showed that the proximal border of the retinaculum was always located proximally to the wrist rotate centre, whatever the traction. DISCUSSION: We found the same anatomical features described by different authors, except for the width of the retinaculum. Our study suggests that the retinaculum is strong enough to support a surgical tenodesis.

Biomechanical Phenomena↗

PubMedDate not supplied

Arthroscopic biceps tenodesis: a new technique using bioabsorbable interference screw fixation.

PURPOSE: To report a new technique of arthroscopic biceps tenodesis using bioabsorbable interference screw fixation and the early results. TYPE OF STUDY: Prospective, nonrandomized study. METHODS TECHNIQUE: The principle of arthroscopic biceps tenodesis is simple: after biceps tenotomy, the tendon is exteriorized and doubled on a suture; the biceps tendon is then pulled into a humeral socket (7 or 8 mm x 25 mm) drilled at the top of the bicipital groove, and fixed using a bioabsorbable interference screw (8 or 9 mm x 25 mm) under arthroscopic control. PATIENTS: 43 patients treated with this technique between 1997 and 1999 were followed-up for at least 1 year. The technique was indicated in 3 clinical situations: (1) with arthroscopic cuff repair (3 cases), (2) in case of isolated pathology of the biceps tendon with an intact cuff (6 cases), and (3) as an alternative to biceps tenotomy in patients with massive, degenerative and irreparable cuff tears (34 cases). The biceps pathology was tenosynovitis (4 cases), prerupture (15 cases), subluxation (11 cases), and luxation (13 cases). RESULTS: The absolute Constant score improved from 43 points preoperatively to 79 points at review (P <.005). There was no loss of elbow movement and biceps strength was 90% of the strength of the other side. Two patients, operated on early in the series, presented with a rupture of the tenodesis. In both cases the bicipital tendon was very friable and the diameter of the screw proved to be insufficient (7 mm). No neurologic or vascular complications occurred. CONCLUSIONS: Arthroscopic biceps tenodesis using bioabsorbable screw fixation is technically possible and gives good clinical results. This technique can be used in cases of isolated pathologic biceps tendon or a cuff tear. A very thin, fragile, almost ruptured biceps tendon is the technical limit of this arthroscopic technique.

Absorbable Implants↗

PubMed2001

Long-term outcome of anatomical reconstruction versus tenodesis for the treatment of chronic anterolateral instability of the ankle joint: a multicenter study.

The long-term clinical outcome after anatomical reconstruction and tenodesis in the treatment of chronic anterolateral ankle instability was assessed in a retrospective multicentre study. The first group (AR) consisted of 25 patients (mean age at operation 22 yrs +/- 5.7) who underwent anatomical reconstruction and the second group (TE) of 29 patients (mean age 23 yrs +/- 6.6) who underwent tenodesis. For both groups, the mean follow-up period was 12.3 yrs (AR +/- 2.5 yrs, TE +/- 2.7 yrs). At physical examination, there were significantly more patients in the TE group (n=18) with a positive anterior drawer sign as compared with the AR group (n=7) (p=0.02). Medially located degenerative changes in the ankle joint as seen on standard radiographs were seen more often in the TE group (n=7) than in the AR group (n=1) (p=0.03). The mean talar tilt, 4.7 degrees in the AR group vs 6.9 degrees in the TE group, (p=0.02) and anterior talar translation, 2.9 mm in the AR group vs 4.3 mm in the TE group, (p=0.04) were significantly higher in the TE group at radiographic stress examination. According to the rating system developed by Good et al. (1975), significantly fewer patients in the TE group (n=8) had an excellent result as compared with the AR group (n=15) (p=0.03) and more patients in the TE group (n=9) had a fair or poor result (p=0.04) as compared with the AR group (n=2). We conclude that a tenodesis procedure does not restore the normal anatomy of the lateral ankle ligaments. When compared with anatomical reconstruction, a tenodesis leads to inferior results in terms of functional and mechanical stability, as well as overall satisfaction at long-term follow-up.

Adult↗

PubMed1989

Watson-Jones tenodesis for ankle instability. A mechanical analysis in amputation specimens.

The stabilizing effect of a modified Watson-Jones ankle tenodesis was studied in 10 lower extremity amputation specimens using a kinesiologic testing device. Cutting of the lateral ligaments caused maximal instability in adduction of the entire hindfoot joint complex, as well as of the talocalcaneal joint. The tenodesis restricted adduction and internal rotation when compared with the movement pattern with intact ligaments. Instability in external rotation persisted because the tenodesis did not restore the function of the calcaneofibular ligament. Our study confirms clinical observations that the Watson-Jones ankle tenodesis prevents abnormal inversion of the hindfoot, but does not restore hindfoot kinematics.

Amputation, Surgical↗

PubMed2001

Tenodesis for chronic lateral ankle instability.

The goal of lateral ankle stabilization is restoration and stability without any functional deficit. Obviously, only anatomic reconstruction can prevent deficits in range of motion. As a result, motion loss is unavoidable with tenodesis procedures. Unfortunately, no procedures are available for anatomic reconstruction of subtalar joint instability. Therefore, when there is objective evidence of subtalar joint instability, tenodesis procedures must be considered. The authors believe that stability is more important than range of motion when degenerative changes are present within the ankle joint. Tenodesis results are good for the short term (less than 5 years) but may deteriorate over time (after more than 9 years). Some residual pain is common following tenodesis procedures.

Ankle Joint↗

PubMed2002

[Anterio-lateral extra-articular tenodesis of the knee using a short strip of fascia lata].

This study describes a lateral extra-articular tenodesis using a short strip of ilio-tibial band. The tenodesis consists of a 12 x 75 mm strip of iliotibial band remaining attached to the Gerdy's tubercle. An isometric point in the region of Krackow's point F-9 is determined with a callipers. The strip of iliotibial band is twisted by 180 degrees to enhance its isometry. Then it is either onlay with a screw and spiked washer on the F-9 point, or within a transverse tunnel drilled through the lateral femoral condyle, from the F-9 point, using and interference screw. Thus, the uses of a short ilio-tibial band tenodesis with a 180 degrees twist in combination with a BPTB reconstruction of the ACL, leads to similar results that the combined classic Lemaire tenodesis, with shorter skin incision, shorter graft harvesting, and at least on the biomechanical standpoint a better graft isometry.

Anterior Cruciate Ligament Injuries↗