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自体半腱肌腱股薄肌腱重建前交叉韧带术后肌腱再生的临床研究 总被引:8,自引:0,他引:8
目的 :应用超声仪观察切取半腱肌腱股薄肌腱重建前交叉韧带后肌腱的再生情况。方法 :39例用自体半腱肌腱股薄肌腱重建前交叉韧带患者 ,术后平均 13个月行双侧半腱肌腱股薄肌腱超声检查 ,了解肌腱再生情况并对比其长度和截面积的变化。结果 :超声检查显示 39例患者中有肌腱再生 2 6例 ,再生率为 72 %。再生肌腱长度和截面积与对侧肌腱相比无明显差异。 2 6例患者半腱肌腱股薄肌肌腹有萎缩。结论 :切取半腱肌腱股薄肌腱重建前交叉韧带后肌腱能够再生。 相似文献
3.
Utilization of the hamstring tendon in reconstruction of the anterior cruciate ligament (ACL) has become common in recent years. In MRI studies regeneration potential in harvested tendon has been observed. In the present study, 20 legs from ten sheep, which underwent 10 cm segment resection of tendon of musculus extensor digitalis lateralis (MEDL) were used. The sheep were killed 6 months after the operation and regenerated tendons were examined macroscopically and histologically. Dissection was performed in the tendon resection area and specimens were reharvested for histological examination. Regeneration of the tendon with normal anatomical topographies was found in all legs. Regeneration occured on both sides of the resected tendon simultaneously. Regeneration was muscle-like in the proximal side but it was tendon-like in the distal side. The developed tendon was fused to the joint capsule and to the fascia at the joint line in all specimens. This study indicates that tendon has a potential for regeneration. 相似文献
4.
Semitendinosus regrowth: biochemical, ultrastructural, and physiological characterization of the regenerate tendon 总被引:5,自引:0,他引:5
Gill SS Turner MA Battaglia TC Leis HT Balian G Miller MD 《The American journal of sports medicine》2004,32(5):1173-1181
BACKGROUND: Previous studies have suggested that hamstring tendons can regenerate following harvesting for anterior cruciate ligament reconstruction. HYPOTHESIS: This "neo-tendon" is a true, functional tendon, not scar tissue. STUDY DESIGN: Controlled laboratory study. METHODS: Semitendinosus tendons were harvested from 35 New Zealand white rabbits using a standard tendon stripper. The rabbits were sacrificed 9 to 12 months following the index procedure and thoroughly evaluated. RESULTS: Thirty-one rabbits were available at the time of sacrifice. The neo-tendon was present in 26 rabbits but was highly variable in size and location of its tibial insertion. Histologic and immunohistochemical staining confirmed that the regenerate tissue was indeed tendon with normal cellularity, organization, and immunolocalization of type I collagen. Electron microscopy showed regeneration of organized collagen tissue that simulated native tendon but with a smaller cross-sectional diameter. Functionally, the neo-tendon was able to transmit force across the musculotendinous junction but at a significantly slower rate than the opposite, control leg. Biomechanical properties of the neo-tendon were significantly less than the control side. Biochemical analysis revealed that the neo-tendons contained glycosaminoglycans and collagen, but levels were significantly lower than normal tendons. CONCLUSIONS: Semitendinosus tendons regenerate with biologically reactive tendinous tissues in an animal model. This tissue has many of the characteristics of a normal tendon but appears to be inferior to the original musculotendinous unit at 9- to 12-month evaluation. Further characterization of the "lizard tail phenomenon" is still needed. CLINICAL RELEVANCE: Hamstring tendon regrowth may have a dramatic impact on postoperative function of patients who undergo anterior cruciate ligament reconstruction with these tendons. Further modulation of this regeneration may further reduce graft harvesting morbidity. 相似文献
5.
Järvelä T Paakkala T Kannus P Toivanen J Järvinen M 《The American journal of sports medicine》2004,32(1):39-46
BACKGROUND: The long-term morphologic changes in the patellar tendon after harvesting its central third for the reconstruction of the anterior cruciate ligament have not been reported. HYPOTHESIS: Sonographic morphologic changes in the harvested patellar tendon are common 10 years after the harvesting procedure. STUDY DESIGN: Retrospective cohort study. METHODS: Thirty-one patients who had undergone an anterior cruciate ligament reconstruction using central-third bone-patellar tendon-bone autograft with a closure of the patellar tendon defect were included in this study. An ultrasonographic and Power Doppler examination was performed at a mean follow-up of 10 years. RESULTS: Ultrasonography of the harvested patellar tendon showed intratendinous calcification in 9 patients, hypoechoic lesion in 20 patients, hyperechoic lesion in 1 patient, and peritendinous changes in 1 patient. Only 3 (9.7%) of the 31 patients had no changes in the harvested patellar tendon. No abnormality was visible in the contralateral (normal) patellar tendons of the 31 patients. The harvested patellar tendon was significantly thicker than the contralateral patellar tendon (P < 0.05). CONCLUSIONS: Sonographic morphologic changes of the patellar tendon were common 10 years after the harvesting procedure, although no evidence of inflammatory process, as could be seen in Power Doppler flow, was found inside of any patellar tendon. 相似文献
6.
Michael E. Hantes Vasilios C. Zachos Konstantinos A. Bargiotas Georgios K. Basdekis Apostolos H. Karantanas Konstantinos N. Malizos 《Knee surgery, sports traumatology, arthroscopy》2007,15(6):712-719
Patellar tendon shortening after anterior cruciate ligament reconstruction may be associated with anterior knee pain or patellofemoral
arthritis. The present study was designed to compare postoperative changes in patellar tendon length after anterior cruciate
ligament reconstruction between patellar tendon and hamstring tendon autograft. Magnetic resonance images of both knees (operated
and healthy) and functional outcome were documented at least 1 year postoperatively in 16 patellar tendon harvested patients
and in 32 hamstrings harvested patients. Patellar tendon length, patella length and Insall–Salvati ratio were measured. The
operated knee values were compared to the respective values of the non-operated control knees. A significant 4.2 mm or 9.7%
patellar tendon shortening in patellar tendon group and a non-significant 1.14 mm or 2.6% shortening in hamstrings group was
detected. No significant difference was detected in terms of major shortening—patella baja—(6% for the patellar tendon group
vs. 0% for the hamsting group). There was no significant difference in anterior knee problems between the two groups as evidenced
by the Shelbourne score (94 for the patellar tendon group vs. 98 for the hamsting group). Harvesting of the patellar tendon
for anterior cruciate ligament reconstruction resulted in a significant shortening of the remaining tendon. In contrast harvesting
of the hamstring tendons did not affect significantly the patellar tendon length. However, the incidence of patella baja and
overall functional outcome was not significantly different between the two groups.
Paper presented at the 12th ESSKA 2000 Congress, Innsbruck, Austria, 2006 and also presented at the 5th Biennial ISAKOS Congress,
Hollywood, FL, USA, 2005. 相似文献
7.
K. Eriksson H. Larsson T. Wredmark P. Hamberg 《Knee surgery, sports traumatology, arthroscopy》1999,7(4):220-225
Utilisation of the semitendinosus and gracilis tendons in reconstruction of the anterior cruciate ligament (ACL) has become
more common during the last few years. In recent studies a regeneration potential in the harvested tendons has been observed.
In this study, 11 consecutive patients who underwent ACL reconstruction with a quadruple semitendinosus graft were examined
6–12 months postoperatively by MRI. Another two patients were examined within 2 weeks after surgery. The median age of the
patients was 24 years and there were 8 males and 3 females. The right knee was involved in six patients and the left knee
in five. A low-field 0.2 Tesla Siemens open MRI was used for examinations and T1 and T2 weighted transaxial sequences over
the thigh and the knee joint were performed. In some instances, additional sagittal sequences were used. ROI analysis of the
pixel value of the signal and area determinations on transaxial sequences was performed for both the involved and the healthy
side. In 8 of the 11 patients examined 6–12 months postoperatively, a regeneration of the semitendinosus tendon with normal
anatomical topographies to the level of the tibial plateau was found. Three of these eight patients were analysed more distally
and fusion of the semitendinosus and gracilis tendons was found approximately 30 mm below the joint line before they inserted
as a “conjoined tendon” into the pes anserinus. At the mid-thigh level, the semitendinosus muscle had a smaller area and a
higher signal than that on the normal side. However, this difference was smaller in the patients showing normal distal tendon
regeneration. This study indicates that the semitendinosus tendon has a strong potential for regeneration and that the muscle
atrophy seems to be less in the patients with a more normalised distal insertion of the tendon in the pes anserinus.
Received: 16 June 1998 Accepted: 20 November 1998 相似文献
8.
Kohjirou Okahashi Kazuya Sugimoto Makoto Iwai Manabu Oshima Masayuki Samma Yoshiyuki Fujisawa Yoshinori Takakura 《Knee surgery, sports traumatology, arthroscopy》2006,14(6):542-545
The purpose of our study is to evaluate whether the hamstring tendons can regrow after harvesting for anterior cruciate ligament (ACL) reconstruction and whether the regenerate tissue can be histologically characterized as tendinous. Eleven of the patients (eight female and three male; mean age, 23 years; range 17–37 years) consented to participate in this study. One year after the ACL reconstruction, surgical biopsy was done. Regeneration of the tendon was detected macroscopically in 9 of the 11 patients. Histologically and immunohistochemically, the regenerated tendons closely resembled normal ones. The results of this study show the hamstring tendons can regenerate after harvesting for the ACL reconstruction. 相似文献
9.
Evaluation of hamstring strength and tendon regrowth after harvesting for anterior cruciate ligament reconstruction 总被引:4,自引:0,他引:4
Tadokoro K Matsui N Yagi M Kuroda R Kurosaka M Yoshiya S 《The American journal of sports medicine》2004,32(7):1644-1650
BACKGROUND: It is generally thought that tissue regeneration and good functional recovery can be expected after anterior cruciate ligament reconstruction using the hamstring tendons. However, persistent strength deficit in deep knee flexion has also been reported. HYPOTHESIS: Morphologic regeneration of the harvested hamstring tendon is not necessarily associated with its functional recovery. STUDY DESIGN: Retrospective follow-up study. METHOD: Twenty-eight patients who underwent anterior cruciate ligament reconstruction with hamstring graft were evaluated after a minimum period of 2 years. Status of tendon regrowth was assessed by magnetic resonance imaging. To specifically analyze the functional deficit after graft harvest, the isometric hamstring strength was examined in a sitting position at 90 degrees of flexion and a prone position at 90 degrees and 110 degrees of flexion. Then, the strength data were correlated with the extent of tendon regeneration. RESULTS: In 22 of the 28 patients, a regrowth of the semitendinosus tendon was found, whereas regeneration of the gracilis tendon was observed in 13 patients. In the evaluation of hamstring strength, the isometric peak torque was reduced to 86.2%, 54.6%, and 49.1%, respectively, in the aforementioned 3 postures as compared with the contralateral side. CONCLUSIONS: Significant functional deficit of hamstring strength remains regardless of morphologic regeneration. 相似文献
10.
Svensson M Movin T Rostgård-Christensen L Blomén E Hultenby K Kartus J 《The American journal of sports medicine》2007,35(2):301-306
BACKGROUND: Clinically, donor site problems are common, even in the long term after anterior cruciate ligament reconstruction using patellar tendon autograft. However, there is a lack of knowledge in terms of the mid- and long-term ultrastructural appearance of the previously harvested tendon in humans. HYPOTHESIS: The patellar tendon does not regain normal ultrastructure 6 years after harvesting its central third and leaving the defect open. STUDY DESIGN: Case-control study; Level of evidence, 3. METHODS: Thirteen patients were included in the study. Biopsy specimens were obtained from the central and lateral thirds of the patellar tendon under ultrasound guidance 71 months (range, 68-73 months) after the reconstruction. Ten biopsy specimens from other subjects with asymptomatic patellar tendons served as controls. The sections were evaluated using transmission electron microscopy. Longitudinal sections were used for morphological evaluation, and the fibril diameter was measured on the transverse sections and grouped into 5 diameter classes. RESULTS: All control specimens were found to have a compact extracellular matrix with regularly oriented collagen fibrils. Specimens from the lateral part of the harvested tendons displayed a more heterogeneous extracellular matrix. In 3 specimens, the extracellular matrix was different from that of the control specimens. Specimens from the central part of the harvested tendons displayed an even more heterogeneous extracellular matrix, with 8 specimens judged as heterogeneous. The fibril diameter in control specimens displayed the most heterogeneous pattern, and all 5 fibril classes were present. All fibril classes were found in the lateral biopsy specimens from the previously harvested tendons, but the 2 smallest fibril classes (0-30 and 31-60 nm) were significantly more dominant compared with control specimens (P < .0001). In the central specimens from the previously harvested tendons, only the 3 smallest size classes were found (P < .0001 vs controls). CONCLUSION: Six years after harvesting its central third and leaving the defect open, the patellar tendon revealed a "more heterogeneous matrix" with changes in ultrastructural morphology and relative fibril diameter distribution compared with normal control tendon. 相似文献
11.
Jüri Kartus Lars Rostgård-Christensen Tomas Movin Sven Lindahl Lars Ejerhed Jon Karlsson 《Knee surgery, sports traumatology, arthroscopy》2000,8(5):275-280
This study compared the reliability (interchangeability) of magnetic resonance imaging (MRI) and ultrasonography (US) examinations of the patellar tendon after using central third patellar tendon autografts during anterior cruciate ligament reconstruction. Nineteen consecutive patients (7 women, 12 men) underwent bilateral MRI and US of the patellar tendons 27 (24-29) months after anterior cruciate ligament reconstruction using ipsilateral central third patellar tendon autografts. Two experienced radiologists blinded to one another evaluated the examinations. Measurements of the length of the noninjured patellar tendon showed the greatest reliability between MRI and US, with no systematic difference (P=0.48), a small mean difference (-0.1 mm), and an interclass correlation coefficient of 0.74. The measurements of the thickness and width of the noninjured side were also judged as reliable. However, on the injured side a lower reliability was found between MRI and US. We conclude that MRI and US are reliable (interchangeable) methods only for evaluating noninjured patellar tendons. 相似文献
12.
Rob P. A. Janssen Maria J. F. van der Velden Huub L. M. Pasmans Harm A. G. M. Sala 《Knee surgery, sports traumatology, arthroscopy》2013,21(4):898-905
Purpose
Primary aim of the study was analysis of hamstring tendon regeneration after anterior cruciate ligament reconstruction (ACLR). Secondary aim was analysis of isokinetic muscle strength in relation to hamstring regeneration. The hypothesis was that regeneration of hamstring tendons after ACLR occurs and that regenerated hamstring tendons contribute to isokinetic hamstring strength with regeneration distal to the knee joint line.Methods
Twenty-two patients scheduled for ACLR underwent prospective MRI analysis of both legs. MRI parameters were tendon regeneration and morphology, muscle retraction and muscle cross-sectional area. A double-blind, prospective analysis of isokinetic quadriceps and hamstrings strength was performed.Results
Regeneration of the gracilis tendon after ACLR occurred in all patients. Regeneration of the semitendinosus tendon occurred in 14 patients. At 1 year, the surface area of the semitendinosus and gracilis muscle decreased compared to both preoperatively (P < 0.01) and the contralateral leg (P < 0.01). The cross-sectional area of the semitendinosus muscle decreased in the absence of tendon regeneration (P = 0.05). The cross-sectional area of the gracilis muscle was greater in case of regeneration distal to the joint line (P = 0.01). Muscle retraction of the semitendinosus muscle was increased in case of nonregeneration (P = 0.02). There was no significant relationship between isokinetic flexion strength and tendon regeneration.Conclusion
Hamstring tendons regenerated after harvest of both semitendinosus and gracilis tendons for ACLR. There was no relation between isokinetic flexion strength and tendon regeneration.Level of evidence
Prognostic study, Level II. 相似文献13.
L��cio Fl��vio Biondi Pinheiro Jr Marco Ant?nio Percope de Andrade Luiz Eduardo Moreira Teixeira Luiz Am��rico Le?o Bicalho Wagner Guimar?es Lemos S��rgio Augusto Campolina Azeredo Leonard Azevedo da Silva Luiz Gustavo Alves Gonzaga 《Knee surgery, sports traumatology, arthroscopy》2011,19(5):811-815
Purpose
To evaluate whether clinical factors enable prediction of the diameter of hamstring tendons harvested for anterior cruciate ligament (ACL) reconstruction. 相似文献14.
BACKGROUND: There is little information documenting whether the phenomenon of "ligamentization," as proposed by Amiel, occurs in the human anterior cruciate ligament after clinically effective reconstruction. To clarify this point, we analyzed biochemical differences between the native anterior cruciate ligament; the patellar, semitendinosus, and gracilis tendons; and anterior cruciate ligaments reconstructed with autografts. STUDY DESIGN: Cohort study; Level of evidence, 2. METHODS: Fifty patients who underwent arthroscopically assisted anterior cruciate ligament reconstruction using either semitendinosus and gracilis tendon or bone-patellar tendon-bone autografts were selected for the study. Samples of grafted tissue were collected during arthroscopy and quantitatively analyzed for collagen content and the amount of reducible and nonreducible crosslinks at 4 to 6 postoperative months in patients with semitendinosus and gracilis tendon grafts and at 11 to 13 months in all patients with semitendinosus and gracilis tendon or bone-patellar tendon-bone grafts. RESULTS: The total collagen content and nonreducible/reducible crosslink ratios increased significantly during the postoperative period (P < .05). The dihydroxylysinonorleucine/hydroxylysinonorleucine ratio was 3.11 +/- 0.56 in the native anterior cruciate ligament, 1.21 +/- 0.47 in the patellar tendon, and 3.59 +/- 1.58 in the anterior cruciate ligaments reconstructed with bone-patellar tendon-bone autografts 1 year after surgery. The dihydroxylysinonorleucine/hydroxylysinonorleucine ratio in both semitendinosus and gracilis tendons was less than 1.0. However, in anterior cruciate ligaments reconstructed with semitendinosus and gracilis tendon autografts, it was 2.34 +/- 0.98 at 4 to 6 months and 3.43 +/- 1.61 at 11 to 13 months after the operation. CONCLUSIONS: After anterior cruciate ligament reconstruction with autografts, biochemical characteristics of the graft resembled those of the native anterior cruciate ligament. These findings suggest that, regarding the amount of collagen crosslinks and their architecture, the phenomenon of ligamentization occurs in the successfully reconstructed human anterior cruciate ligament within 1 year after operation. 相似文献
15.
G. S. Murley J. M. Tan R. M. Edwards J. De Luca S. E. Munteanu J. L. Cook 《Scandinavian journal of medicine & science in sports》2014,24(3):535-541
The aim of this study was to investigate the association between foot type and the morphometry of selected muscles and tendons of the lower limb. Sixty‐one healthy participants (31 male, 30 female; aged 27.1 ± 8.8 years) underwent gray‐scale musculoskeletal ultrasound examination to determine the anterior‐posterior (AP) thickness of tibialis anterior, tibialis posterior, and peroneus longus muscles and tendons as well as the Achilles tendon. Foot type was classified based on arch height and footprint measurements. Potentially confounding variables (height, weight, hip and waist circumference, rearfoot and ankle joint range of motion, and levels of physical activity) were also measured. Multiple linear regression models were used to determine the association between foot type with muscle and tendon morphometry accounting for potentially confounding variables. Foot type was significantly and independently associated with AP thickness of the tibialis anterior tendon, peroneus longus muscle, and Achilles tendon, accounting for approximately 7% to 16% of the variation. Flat‐arched feet were associated with a thicker tibialis anterior tendon, a thicker peroneus longus muscle, and a thinner Achilles tendon. Foot type is associated with morphometry of tendons that control sagittal plane motion of the rearfoot; and the peroneus longus muscle that controls frontal plane motion of the rearfoot. These findings may be related to differences in tendon loading during gait. 相似文献
16.
Bellelli A Adriani E Margheritini F Camillieri G Della Rocca C Mariani PP 《La Radiologia medica》1999,98(6):454-461
INTRODUCTION: The healing process of tendon grafts used in cruciate ligament reconstruction is called ligamentization. The tendon structural architecture changes progressively into the histological appearance of normal ligament. Amiel and Clancy have demonstrated that this process is time-dependent in anterior cruciate ligament (ACL) reconstruction, the tendon graft taking one year to become similar to a normal cruciate ligament. Three different maturation phases of anterior cruciate graft ligamentization can be seen at MRI: periligamentous proliferation, intraligamentous proliferation and definitive healing. We report our MR findings in the reconstruction of single ACL, posterior cruciate ligament (PCL), and of both ACL and PCL. MATERIAL AND METHODS: January 1995 to January 1999 we selected 60 patients submitted to arthroscopic cruciate ligament reconstruction. The ACL was reconstructed with the patellar tendon in 22 cases and the PCL in 23; fifteen patients underwent double reconstruction of ACL, with hamstring tendons, and PCL, with patellar tendons. Fifty-five patients were followed-up with MRI: 45 with a dedicated permanent magnet (Artroscan, Esaote Biomedica, Genoa, Italy) and 10 with a permanent low-field unit (AIRIS, Hitachi, Japan); the same technical parameters were used in all cases. Forty of 55 patients were examined at 1, 3, 6, 9 and 12 postoperative months, while 15 were followed-up longer (12 to 36 months postoperatively). At the first follow-up MR examination, 5 patients (2 ACL and 3 PCL) were excluded for incorrect tunnel position (1 case), hypertrophic scarring (2 cases) and new trauma (2 cases). MR findings were compared with clinical data of joint stability. RESULTS: MRI showed the different stages of the healing process in 20 ACL patients: proliferating soft tissue around the graft with the low signal intensity typical of tendons (stage I, 1-3 months postoperatively), the graft becomes progressively hyperintense (stage II, 3-9 months postoperatively), and finally the low signal intensity indicating completed ligamentization (stage III, 12 months postoperatively). As for PCL reconstructions, MR findings were similar but the process took longer, even 24 months. Finally, in the 15 cases of double reconstruction, both grafts were difficult to distinguish on T1-weighted images for a very long time (24-36 months postoperatively). DISCUSSION AND CONCLUSIONS: Relative to the ACL, ligamentization takes longer for PCL and combined ACL and PCL reconstructions, probably because the morphological changes in PCL and double grafts may be impaired by many factors, such as gravity, long bone tunnels, hemarthrosis, hyperplastic synovial reaction in the intercondylar notch; also, rehabilitation protocols differ in ACL from PCL patients. No signs of instability were found at physical or arthrometric examinations. MRI demonstrates the different stages of ligamentization and thus proves a useful tool for postoperative follow-up in cruciate ligament reconstructions. Contrast-enhanced (Gd) studies are reserved to the cases of graft impingement or if other abnormalities are suspected. 相似文献
17.
Anterior cruciate ligament reconstruction using an autologous graft harvested from the central one-third of the patellar and quadriceps tendon was performed in 65 knees of 65 patients who were followed from 3 to 7 years. Mean anterior laxity of both knees was measured before and after surgery in each patient using the Styker Knee Laxity Tester. At 30 degrees of knee flexion, 58 patients (89%) had differences of less than 2.5 mm between the operated and unoperated knees. Quadriceps strength was measured with the Cybex II and was less than 50% of the uninjured knee at 3 months after surgery. In men, quadriceps strength returned to 78% of normal at 1 year and 85% at final followup. These values were equal to the preoperative level. In women, the quadriceps strength at final followup was 70%, significantly lower than preoperative strength. Hamstring strength recovered to equal the normal strength. Although anterior cruciate ligament reconstruction using one-third of the patellar and quadriceps tendon achieves stability, postoperative quadriceps weakness is a disadvantage. This weakness may be caused by impairment of the knee extensor mechanism resulting from harvesting the graft. We do not currently recommend this technique for anterior cruciate ligament reconstruction. 相似文献
18.
M. Cervellin L. de Girolamo C. Bait M. Denti P. Volpi 《Knee surgery, sports traumatology, arthroscopy》2012,20(1):114-120
Purpose
Bone-patellar tendon–bone technique (BPTB) for anterior cruciate ligament injuries is associated with a higher risk of donor-site morbidity. To evaluate whether platelet-rich plasma (PRP), due to its anti-inflammatory properties and capacity to stimulate tissue regeneration, was able to reduce the anterior knee pain, the kneeling pain, and donor-site morbidity, as evidenced by evaluation of VISA and VAS scoring scales and MRI analysis of the tendon and bone defect, we performed a clinical randomized controlled study where PRP gel was applied to donor site after ACL reconstruction with BPTB. 相似文献19.
Bellelli A Adriani E Pederzini L Burani A Gallo E Avitto A David V 《La Radiologia medica》2002,103(3):242-252
PURPOSE: Anterior cruciate ligament reconstructions are becoming increasingly frequent, and MRI has been shown to be the best imaging modality for the non-invasive assessment of surgical outcome. Use of the quadriceps tendon as a biological replacement for injured cruciate ligament is a recent innovation. This study evaluated by MRI the results of anterior cruciate reconstruction in 27 consecutive patients who underwent arthroscopic reconstruction with homologous quadriceps tendon. MATERIAL AND METHODS: MRI was carried out on 27 patients who had undergone anterior cruciate ligament reconstruction with the middle third of the homolateral quadriceps tendon. The examinations were performed on two MRI units: a permanent 0.2-Tesla dedicated magnet (Artoscan, Esaote Italy) and whole-body 1.5-Tesla superconducting magnet (Signa, GE Medical Systems Milwaukee, Winsconsin USA). Axial, sagittal and coronal images were acquired with SE, GE and STIR fat suppression sequences. The examinations were performed 1, 3, and 6 months post-operatively in 16 patients, and 1 and 3 post-operatively in 11 patients. The same arthroscopic surgical technique was employed in all patients, with 20 cases of tibial mono-tunnel femoral semi-tunnel, and 7 cases with tibial bi-tunnel technique. All patients were assessed by arthrometric and clinical tests after surgery. Bioabsorbable interference screws were used for tibial fixation in all patients and metallic interference screws were used for femoral graft fixation in 8 patients. RESULTS: In all cases MRI correctly visualised the tunnel positions, the articular portion and the bone-portion of the graft inside the tibial and femoral tunnels. The absence of paramagnetic artefacts in the tibia allowed complete visualisation on the axial, sagittal and coronal MRI images with optimal spatial and contrast resolutions. In 6 cases, the presence of metal residues from the surgical cutter prevented correct evaluation of femoral tunnel content. No new graft or articular lesions were found. In 18/27 cases peri-focal marrow edema around the tibial tunnel had disappeared 3 months after surgery. The process of synovial incorporation was judged to be correct in all cases. DISCUSSION: The use of anterior cruciate ligament reconstruction with the quadriceps tendon is a important innovation given the size of the harvested material and the possibility of completely filling the osseous tunnels, without interposition of synovial proliferation or fluid collection between tendon and bone, as confirmed by MRI. Furthermore, the use of non-metallic screws allows MRI evaluation of tunnel content and oedema in the spongy bone around the tunnel. The study of the double tibial tunnel requires specific obliqueness in the coronal plane scans. CONCLUSIONS: This arthroscopic technique for anterior cruciate ligament reconstruction allows thorough MRI evaluation of all portions of the transplant, and in particular those coursing within the tibia and femur. The absence of bone oedema around the tunnels and synovial proliferation within the tunnels may be predictive of faster healing and complete bone incorporation of the grafts. 相似文献
20.
Beyzadeoglu T Akgun U Tasdelen N Karahan M 《Knee surgery, sports traumatology, arthroscopy》2012,20(7):1293-1297