Maurilio Marcacci

Istituto Ortopedico Rizzoli, Bolonia, Emilia-Romagna, Italy

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Publications (390)876.83 Total impact

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    ABSTRACT: In the past few years, researchers have focused on the design and development of three-dimensional (3D) advanced scaffolds, which offer significant advantages in terms of cell performance. The introduction of magnetic features into scaffold technology could offer innovative opportunities to control cell populations within 3D microenvironments, with the potential to enhance their use in tissue regeneration or in cell-based analysis. In the present study, 3D fully biodegradable and magnetic nanocomposite scaffolds for bone tissue engineering, consisting of a poly(ε-caprolactone) (PCL) matrix reinforced with iron-doped hydroxyapatite (FeHA) nanoparticles, were designed and manufactured using a rapid prototyping technique. The performances of these novel 3D PCL/FeHA scaffolds were assessed through a combination of theoretical evaluation, experimental in vitro analyses and in vivo testing in a rabbit animal model. The results from mechanical compression tests were consistent with FEM simulations. The in vitro results showed that the cell growth in the magnetized scaffolds was 2.2-fold greater than that in non-magnetized ones. In vivo experiments further suggested that, after only 4 weeks, the PCL/FeHA scaffolds were completely filled with newly formed bone, proving a good level of histocompatibility. All of the results suggest that the introduction of magnetic features into biocompatible materials may confer significant advantages in terms of 3D cell assembly.
    Journal of Biomedical Nanotechnology 07/2015; 11(7):1236-1246. DOI:10.1166/jbn.2015.2065 · 7.58 Impact Factor
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    ABSTRACT: A deficiency of posterolateral structures significantly increases the varus load on the ACL, while a chronic ACL lesion, the increased tibial rotation and the repetitive non-physiological knee motion, could affect and damage the integrity of the popliteus tendon. Therefore, the aim of the present study was to report the very long clinical outcomes of a combined single-bundle BPTB ACL reconstruction and popliteus plasty according to Bousquets technique, for the treatment of combined chronic anterior and posterolateral laxities. Fifteen patients that underwent combined ACL reconstruction and popliteal plasty according to Bousquets technique were available at mean 26.8 ± 1.0 years (range 25.4-28.0 years). All the patients were evaluated clinically and 13 by means of KT-1000 Arthrometer as well. Subjective evaluation was performed with the subjective IKDC, WOMAC and a 0-10 VAS for pain scales. At clinical evaluation, 10 patients (67 %) presented a negative anterior drawer test; Lachman test was negative in nine patients (60 %); the varus stress test was negative in eight (53 %); and the dial test was negative in all but one patient (93 %). Only two patients (15 %) presented a side-to-side difference >5 mm at the instrumented laxity evaluation. The combined single-bundle BPTB ACL reconstruction and popliteal plasty according to Bousquets technique were able to produce very good long-term results, in terms of knee stability, subjective outcomes, functional results and return to sport activity, in case of chronic anterior and posterolateral laxities. Retrospective case series, Level IV.
    Knee Surgery Sports Traumatology Arthroscopy 06/2015; DOI:10.1007/s00167-015-3673-x · 2.84 Impact Factor
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    ABSTRACT: Return to sport and to pre-injury level represents an important outcome after both primary and revision anterior cruciate ligament (ACL) reconstructions. The aim of the present meta-analysis was to determine the return to sport rate after revision ACL reconstruction. A systematic search was performed of the MEDLINE, Embase and the Cochrane Central Register of Controlled Trials Databases. All the studies that reported return to sport, return to pre-injury sport level and return to high level/competitive sport was considered for the meta-analysis. The overall pooled mean of post-operative knee laxity and pooled rate of positive pivot-shift and objective International Knee Documentation Committee (IKDC) categories was calculated as well. Overall, 472 abstracts were identified and screened for inclusion and only 16 studies reported the rate of return to any level of sport activity at the final follow-up of 4.7 years (range 1.0-13.2 years), showing a pooled rate of 85.3% (CI 79.7 to 90.2). The return to pre-injury sport level was achieved in 53.4% (CI 37.8 to 68.7) of cases. Normal or quasi-normal objective IKDC, less than 5 mm of side-to-side difference at arthrometric evaluations and grade I-II pivot-shift test were reported in 84%, 88% and 93% patients, respectively. In spite of almost 8 patients out of 10 returning to sport after revision ACL reconstruction and showing good stability, only half of the patients returned to the same pre-injury sport level. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.
    British Journal of Sports Medicine 06/2015; DOI:10.1136/bjsports-2014-094089 · 5.03 Impact Factor
  • The Open Orthopaedics Journal 05/2015; 9(1):143-156. DOI:10.2174/1874325001509010129
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    ABSTRACT: Several eminent surgeons made breakthroughs in knee surgery throughout the nineteenth and twentieth centuries. Before that, knee injuries were only treated conservatively and it was thanks to the progress made in the field of biomechanics and biology that new surgical treatments were proposed. The history of medicine recalls some illustrious surgeons such as Thomas Annandale and Mayo Robson who were the first to perform and describe their revolutionary experience regarding meniscal and anterior cruciate ligament surgery. Less famous are the forefathers of multi-ligament reconstructive surgery: the purpose of this paper was to shed some light on the pioneers of this particular field of orthopaedic practice, which is gaining increasing interest in current clinical practice. Level of evidence V.
    Knee Surgery Sports Traumatology Arthroscopy 05/2015; DOI:10.1007/s00167-015-3615-7 · 2.84 Impact Factor
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    ABSTRACT: Osteoarthritis (OA) is a common disease that will affect almost half the population at some point in their lives through pain and decreased functional capacity. New nonoperative options are being proposed to treat earlier stages of joint degeneration to provide symptomatic relief and delay surgical intervention. To evaluate the benefit provided by platelet-rich plasma (PRP) injections to treat knee joint degeneration in comparison with hyaluronic acid (HA), the most common injective treatment currently adopted for this condition. Randomized controlled trial; Level of evidence, 1. A total of 443 patients were screened, and 192 of them were enrolled in the study according to the following inclusion criteria: (1) unilateral symptomatic knee with history of chronic pain (at least 4 months) or swelling and (2) imaging findings of degenerative changes (Kellgren-Lawrence score of 0-3 at radiographs or MRI evidence of degenerative chondropathy). Patients underwent 3 weekly intra-articular injections of either PRP or HA. Patients were prospectively evaluated at baseline and then at 2, 6, and 12 months of follow-up using the International Knee Documentation Committee (IKDC) subjective score (main outcome), Knee injury and Osteoarthritis Outcome Score, EuroQol visual analog scale, and Tegner score. Range of motion, transpatellar circumference, patient satisfaction, and adverse events were also recorded. Two patients reported severe pain and swelling after HA injections, while no major adverse events were noted in the PRP group. However, PRP presented overall significantly more postinjection swelling and pain. Both treatments proved to be effective in improving knee functional status and reducing symptoms: the IKDC score in the PRP group rose from 52.4 ± 14.1 to 66.2 ± 16.7 at 12 months (P < .0005), and in the HA group it rose from 49.6 ± 13.0 to 64.2 ± 18.0 at 12 months (P < .0005). A similar trend was observed for all the clinical scores used. The comparative analysis of the 2 treatments showed no significant intergroup difference at any follow-up evaluation in any of the clinical scores adopted. PRP does not provide a superior clinical improvement with respect to HA, and therefore it should not be preferred to viscosupplementation as injective treatment of patients affected by knee cartilage degeneration and OA. © 2015 The Author(s).
    The American Journal of Sports Medicine 05/2015; DOI:10.1177/0363546515582027 · 4.70 Impact Factor
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    ABSTRACT: To present the 2-year results of the use of the lateral Collagen Meniscus Implant (CMI) for the treatment of irreparable lateral meniscal lesions or partial lateral meniscal defects, to investigate the potential predictors of clinical results, and to monitor device safety. Forty-three patients with a mean age of 30.1 ± 12.0 years were clinically evaluated 24 months after treatment of partial lateral meniscal defects with the CMI (Ivy Sports Medicine, Gräfelfing, Germany). We used the Lysholm score, the Tegner Activity Scale, a visual analog scale for pain (during strenuous activity, during routine activity, and at rest), a functional questionnaire, and a satisfaction questionnaire for the evaluation. All demographic and surgical parameters were used for multiple regression analysis to find outcome predictors. Serious adverse events and reoperations were monitored. All clinical scores significantly improved from preoperatively to final evaluation at 24.2 ± 1.9 months' follow-up. The Lysholm score improved significantly from 64.3 ± 18.4 preoperatively to 93.2 ± 7.2 at final follow-up (P = .0001). Functional improvement was detected from 6 months after surgery, whereas strenuous activities and knee swelling reached optimal results after 12 months. The highest pain ratings experienced during strenuous activity, during routine activity, and at rest significantly improved from 59 ± 29, 29 ± 25, and 20 ± 25, respectively, preoperatively to 14 ± 18, 3 ± 5, and 2 ± 6, respectively, at 2 years' follow-up (P = .0001). At final follow-up, 58% of patients reported activity levels similar to their preinjury values whereas 95% of patients reported that they were satisfied with the procedure. A higher body mass index, the presence of concomitant procedures, and a chronic injury pattern seemed to negatively affect the final outcomes. Serious adverse events with a known or unknown relation to the scaffold, such as pain, swelling, and scaffold resorption, were reported in 6% of patients, leading to CMI explantation, debridement, or synovectomy. The lateral CMI scaffold could be considered a potentially effective and safe procedure to treat both irreparable lateral meniscal tears and post-meniscectomy syndrome in appropriately selected patients. Chronic injury, high body mass index, and concomitant procedures have been shown to negatively affect the short-term results; however, the results appeared to slowly improve through the 24-month follow-up period. Thus patience is needed when evaluating the expectations for and results of the described procedure. Level IV, therapeutic case series. Copyright © 2015 Arthroscopy Association of North America. Published by Elsevier Inc. All rights reserved.
    Arthroscopy The Journal of Arthroscopic and Related Surgery 04/2015; DOI:10.1016/j.arthro.2015.01.025 · 3.19 Impact Factor
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    ABSTRACT: A Note from the Column Editor,Di Matteo and colleagues from the Rizzoli Orthopaedic Institute in Bologna, Italy share with us another extraordinary example of how medicine evolved in partnership with art. The University of Bologna is considered the oldest academic institution in the Western world, so it is no surprise that many of the finest examples of the evolution of scientific investigation and teaching originated in the expansive beauty of the Archiginnasio of Bologna. As Di Matteo and colleagues explain, this was the ancient stage upon which students observed the performances of teaching anatomy. It is serendipitous that this beautiful description of the 16thcentury anatomy theatre follows our discussion of The Gross Clinic by American artist Thomas Eakins in the 19thcentury [4], an example of the surgical theatre. This is an opportunity to compare the high drama carried out on these two stages, theatres set 300 years apart, both venues designed to be practical places for transmi ...
    Clinical Orthopaedics and Related Research 04/2015; 473(6). DOI:10.1007/s11999-015-4288-8 · 2.88 Impact Factor
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    ABSTRACT: An effective acetabular labrum is able to create a seal between the peripheral and central compartment of the hip joint. The goal of this study was to determine the effects of labral tears, repair and labrectromy on labrum function by using a navigation system and a load cell. The hip joint center displacement (mm) and the distraction load (N) was measured in 8 cadaveric hips during distraction maneuvers. These measurements were repeated after creating an anterolateral tear, cercalge repair, vertical mattress repair and labrectomy, respectively. Compared to the intact condition, 3% and 15% higher displacement was provoked during distraction test after labral-chondral separation and labrectomy. Moreover, significantly less force was required to distract the femur after cercalge repair (25%), vertical mattress repair (22%) and labrectomy (40%). A breach of the integrity of labral function was shown to lead to decreased femoral stability relative to the acetabulum during extreme ranges of motion.
    Journal of Mechanics in Medicine and Biology 04/2015; 15(02):1540036. DOI:10.1142/S0219519415400369 · 0.80 Impact Factor
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    ABSTRACT: Joint prosthesis are usually subjected to several failing mechanisms, including wear of the ultra-high molecular weight polyethylene (UHMWPE) insert. The main goal of this study was to assess the possibility to improve the tribological properties of titanium component by depositing zirconia thin films on its surface by pulsed plasma deposition (PPD) method. Zirconia-coated titanium spheres were tested against UHMWPE disks, both in dry and wet conditions. Zirconia films exhibited a homogenous sub-micrometric grain size distribution and low roughness. Interestingly, zirconia-coated titanium spheres showed lower wear rate of the UHMWPE component, compared to uncoated titanium spheres, supporting the feasibility of the proposed approach.
    Journal of Mechanics in Medicine and Biology 04/2015; 15(02):1540002. DOI:10.1142/S0219519415400023 · 0.80 Impact Factor
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    ABSTRACT: The medial patellofemoral ligament (MPFL) has been demonstrated to be the major soft tissue restraint to lateral patellar displacement, therefore its reconstruction is becoming the most performed procedure in cases of patellar dislocation.
    Operative Techniques in Sports Medicine 03/2015; DOI:10.1053/j.otsm.2015.02.003 · 0.21 Impact Factor
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    ABSTRACT: Achieving an efficient fixation for complicated fractures and scaffold application treatments is a challenging surgery problem. Although many fixation approaches have been advanced and actively pursued, the optimal solution for long bone defects has not yet been defined. This paper promotes an innovative fixation method based on application of magnetic forces. The efficiency of this approach was investigated on the basis of finite element modeling for scaffold application and analytical calculations for diaphyseal fractures. Three different configurations have been analyzed including combinations of small cylindrical permanent magnets or stainless steel rods, inserted rigidly in the bone intramedullary canals and in the scaffold. It was shown that attractive forces as high as 75N can be achieved. While these forces do not reach the strength of mechanical forces in traditional fixators, the employment of magnetic rods is expected to be beneficial by reducing considerably the interface micromotions. It can additionally support magneto-mechanical stimulations as well as enabling a magnetically assisted targeted delivery of drugs and other bio-agents. Copyright © 2015 Elsevier Ltd. All rights reserved.
    Computers in Biology and Medicine 03/2015; 61. DOI:10.1016/j.compbiomed.2015.03.013 · 1.90 Impact Factor
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    ABSTRACT: This study aimed to compare the position of the patella at 90° of flexion before and after implantation of two TKA models with identical tibiofemoral geometry but different trochlear and patellar designs. The hypothesis was that the design with the deeper 'anatomic' trochlea could produce more natural patellar positions. Intra-operative navigation data were collected from 22 consecutive cases that received two TKA designs (9 HLS Noetos(®) and 13 HLS KneeTec(®)). Both implants were cemented postero-stabilised TKAs with mobile tibial inserts and patellar resurfacing. Operations were guided by a non-image-based system that recorded relative femoral, tibial and patellar positions pre- and post-operatively. The two groups exhibited little difference in femoral internal-external rotation and anterior-posterior translation during knee flexion. The two groups exhibited significant differences in patellar position at 90° of flexion. Post-operatively, the patella was similarly shifted medially relative to the femur (Noetos 6.9 mm, KneeTec 6.0 mm, n.s.). Patellar flexion was equivalent in native knees (Noetos 18.3°, KneeTec 20.5°, n.s.), but in implanted knees, it was considerably different (Noetos 6.3°, KneeTec 23.5°, p = 0.031). The present study compared intra-operative navigation data from two patient series that received TKA implants with identical tibiofemoral articular geometry but different patellofemoral designs. The results confirm that tibiofemoral kinematics are unchanged, but that patellar positions at 90° of flexion offer greater mechanical advantage to the quadriceps using the KneeTec than using the Noetos. The findings raise awareness of influence of patellofemoral geometry on mid-flexion kinematics and help surgeons select the most suitable implant for patients with weak quadriceps muscles or with history of patellar instability. Comparative study, Level III.
    Knee Surgery Sports Traumatology Arthroscopy 03/2015; 23(6). DOI:10.1007/s00167-015-3565-0 · 2.84 Impact Factor
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    ABSTRACT: The restoration of the physiological femoro-tibial joint line (JL) is important to obtain a good outcome in revision total knee arthroplasty (RTKA). However, its assessment is challenging. The ratio of the distance between the adductor tubercle (AT) JL (ATJL) and the trans-epicondylar femoral width (FW) was proposed as a reliable method. The purpose of this study was to check whether this ratio is a reliable tool to restore the prosthetic JL height in challenging prosthetic revision cases. Twenty-one patients (mean age 65.8 years) were recruited. During surgery, FW was measured and ATJL distance was calculated using 0.53 (SD 0.03) as the ratio. After implant positioning, the obtained ATJL line was measured to verify the accuracy of the surgical procedure. Thirteen patients presented a healthy contralateral knee: a comparative radiograph examination was performed to verify the appropriateness of the restored JL height. The intra-operatively calculated ATJL was not significantly different with respect to the measured ATJL obtained after prosthetic component implantation. The comparative analysis between the restored JL and the JL of the contralateral not operated knee was also not statistically significant, thus confirming the appropriateness of the restored JL height. This study shows that the method which uses an AT to JL distance/FW ratio to determine the JL level, previously applied in primary TKA, is valid when using intra-operatively acquired measurements in RTKA. This is clinically relevant since it represents a reliable tool which helps surgeons to restore the JL level in challenging prosthetic revision cases. Case series, Level IV.
    Knee Surgery Sports Traumatology Arthroscopy 03/2015; DOI:10.1007/s00167-015-3556-1 · 2.84 Impact Factor
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    ABSTRACT: Einleitung Meniskusimplantate stellen heute eine interessante Behandlungsoption für Patienten mit persistierenden Schmerzen nach Meniskusteilresektion dar. Methoden Derzeit sind zwei verschiedene Produkte für die klinische Verwendung in Europa zugelassen: das Collagen Meniscus Implant (CMI®; Ivy Sports Medicine GmbH, Gräfelfing, Germany), eine poröse Kollagen-Glykosaminoglykan(GAG)-Matrix, die zu 97 % aus Typ-I-Kollagen zusammensetzt, und das Actifit®-Implantat (Orteq Ltd, London, UK), bestehend aus einer synthetischen Matrix, die sich zu 80 % aus biologisch abbaubarem Polyester und zu 20 % aus Polyurethan zusammensetzt. Ergebnisse Insgesamt kann bei differenzierter Indikationsstellung mit einer Verbesserung der Kniefunktion und erhöhter Sportaktivität bei 70-90 % der Patienten gerechnet werden. Hierbei sind insbesondere auch Zusatzpathologien, wie Knorpelschäden, Instabilitäten und Achsenabweichungen zu beachten. Schlussfolgerung Auch wenn eine große Anzahl an Erkrankungen potenziell behandelt werden kann, sind gute Ergebnisse in hohem Maße von der Einhaltung der Indikationen abhängig.
    Arthroskopie 02/2015; 28(1):38-42. DOI:10.1007/s00142-014-0837-5
  • Journal of Mechanics in Medicine and Biology 01/2015; DOI:10.1142/S0219519415500700 · 0.80 Impact Factor
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    ABSTRACT: Regenerative scaffold-based procedures are emerging as a potential therapeutic option for the treatment of chondral and osteochondral lesions. In general, we can summarize most of the recent developments to reach clinical application into 2 major trends: the use of different cell sources or the application of biomaterials as a cell-free approach. The aim of this systematic review was to analyze both preclinical and clinical studies on these new trends to understand how the available evidence supports the use of cell sources or justifies the cell-free approach for the scaffold-based treatment of cartilage lesions. The research was performed using the PubMed database by looking at studies published in the English language referring to chondral or osteochondral defect repair with scaffold-based procedures until the end of 2013. The following strings were used: ("cartilage"[MeSH] AND "tissue scaffolds"[MeSH]). The search showed an increasing number of published articles each year for both scaffold-based approaches, identifying a total of 305 articles. Among clinical trials, 116 used cell-based scaffold treatments and 11 used scaffolds alone. In the preclinical setting, a scaffold/cell combination was the most used treatment approach (133 v 45 articles), with mesenchymal stem cells (MSCs) being the favorite cell type. Bone marrow was the most used cell source, but other sources are gaining interest. Among articles comparing scaffolds with or without cells, the majority reported superior results for cells (71 of 89 articles). In the clinical setting, most of the articles analyzed chondrocyte-based scaffolds, with only 7 studies using MSCs; all cells were from bone marrow. Despite the lower number of articles, cell-free scaffolds are gaining popularity, with a recent increase in published studies showing promising results. This systematic review underlined the difficulties in understanding the real need for cells to increase the scaffold-based cartilage healing potential because of the heterogeneity of products used as well as the design of the published studies. Scaffold and cell combinations were the most investigated option in the preclinical setting, showing generally superior results, but in the clinical setting, both strategies remain used. In particular, although chondrocytes are the most commonly used cell type, research showed increasing interest in the potential of MSCs for cartilage regeneration. However, the difficulties in managing cell cultures, together with the development of a new generation of materials able to exploit the intrinsic tissue regeneration ability, justifies the clinical use of cell-free scaffolds, with increasing literature and promising preliminary results. Level IV, systematic review of Level I to IV studies. Copyright © 2015 Arthroscopy Association of North America. Published by Elsevier Inc. All rights reserved.
    Arthroscopy The Journal of Arthroscopic and Related Surgery 01/2015; 31(4). DOI:10.1016/j.arthro.2014.11.017 · 3.19 Impact Factor
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    ABSTRACT: Bone marrow oedema (BME) in the knee is a feature of several pathological conditions, and it has been described with high frequency in patients with acute anterior cruciate ligament (ACL) injury. The aim of this study is to evaluate the significance of BME, assessed in MRIs performed for ACL injury, with regards to clinical outcome and return to sport. A total of 134 patients (98 men, 36 women) with ACL tear and MRI knee scan within six months from trauma were analysed. The presence of BME was evaluated on MRI images considering: extension and hyperintensity, the WORMS score oedema classification, and measuring the BME area. The clinical results were documented by IKDC-subjective score and the sport activity level by Tegner score at a minimum of five years follow up. BME was present in 74 knees (55.2 %), with a mean area of 523 ± 370 mm². The presence of BME showed a gradual decrease over time (p = 0.008), being detectable in MRIs performed more than three months after trauma in just 25.0 % of cases. Although 54 % of the patients without BME after three months returned to their previous sport level, no patients with oedema reached a full sport recovery (p = 0.01). In the group that underwent ACL reconstruction, the BME area was significantly correlated with a return to the previous sport level at the mid/long-term follow-up (p = 0.038). BME is a common finding, which decreases over time after injury. However, when BME is still detectable it correlates with clinical prognosis, and even in sport-active patients undergoing ACL reconstruction, a higher BME area is a negative predictive factor for a successful outcome at the mid/long-term follow-up.
    International Orthopaedics 01/2015; DOI:10.1007/s00264-015-2672-3 · 2.02 Impact Factor
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    ABSTRACT: Current research is investigating new methods to enhance tissue healing to speed up recovery time and decrease the risk of failure in Anterior Cruciate Ligament (ACL) reconstructive surgery. Biological augmentation is one of the most exploited strategies, in particular the application of Platelet Rich Plasma (PRP). Aim of the present paper is to systematically review all the preclinical and clinical papers dealing with the application of PRP as a biological enhancer during ACL reconstructive surgery. Thirty-two studies were included in the present review. The analysis of the preclinical evidence revealed that PRP was able to improve the healing potential of the tendinous graft both in terms of histological and biomechanical performance. Looking at the available clinical evidence, results were not univocal. PRP administration proved to be a safe procedure and there were some evidences that it could favor the donor site healing in case of ACL reconstruction with patellar tendon graft and positively contribute to graft maturation over time, whereas the majority of the papers did not show beneficial effects in terms of bony tunnels/graft area integration. Furthermore, PRP augmentation did not provide superior functional results at short term evaluation.
    01/2015; 2015:1-15. DOI:10.1155/2015/371746
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    ABSTRACT: Nanoindentation can provide new insights on the maturity stage of regenerating bone. The aim of the present study was the evaluation of the nanomechanical properties of newly-formed bone tissue at 4 weeks from the implantation of permanent magnets and magnetic scaffolds in the trabecular bone of rabbit femoral condyles. Three different groups have been investigated: MAG-A (NdFeB magnet + apatite/collagen scaffold with magnetic nanoparticles directly nucleated on the collagen fibers during scaffold synthesis); MAG-B (NdFeB magnet + apatite/collagen scaffold later infiltrated with magnetic nanoparticles) and MAG (NdFeB magnet). The mechanical properties of different-maturity bone tissues, i.e. newly-formed immature, newly-formed mature and native trabecular bone have been evaluated for the three groups. Contingent correlations between elastic modulus and hardness of immature, mature and native bone have been examined and discussed, as well as the efficacy of the adopted regeneration method in terms of "mechanical gap" between newly-formed and native bone tissue. The results showed that MAG-B group provided regenerated bone tissue with mechanical properties closer to that of native bone compared to MAG-A or MAG groups after 4 weeks from implantation. Further, whereas the mechanical properties of newly-formed immature and mature bone were found to be fairly good correlated, no correlation was detected between immature or mature bone and native bone. The reported results evidence the efficacy of nanoindentation tests for the investigation of the maturity of newly-formed bone not accessible through conventional analyses.
    Journal of Materials Science Materials in Medicine 01/2015; 26(1):5363. DOI:10.1007/s10856-014-5363-5 · 2.38 Impact Factor

Publication Stats

7k Citations
876.83 Total Impact Points

Institutions

  • 1993–2015
    • Istituto Ortopedico Rizzoli
      • • Laboratory of Biomechanics and Technology Innovation
      • • Movement Analysis Laboratory
      Bolonia, Emilia-Romagna, Italy
  • 1991–2013
    • University of Bologna
      • Department of Biomedical Science and Neuromotor Sciences DIBINEM
      Bolonia, Emilia-Romagna, Italy
    • Bologna Center
      Bolonia, Emilia-Romagna, Italy
  • 2012
    • Università degli Studi di Messina
      Messina, Sicily, Italy
  • 2005
    • University of Naples Federico II
      Napoli, Campania, Italy
  • 1997
    • Scuola Superiore Sant'Anna
      Pisa, Tuscany, Italy