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  • JOURNAL ARTICLE
    Iranpour F, Merican AM, Rodriguez y Baena F, Cobb JP, Amis AAet al., 2010,

    Patellofemoral Joint Kinematics: The Circular Path of the Patella around the Trochlear Axis

    , JOURNAL OF ORTHOPAEDIC RESEARCH, Vol: 28, Pages: 589-594, ISSN: 0736-0266
  • JOURNAL ARTICLE
    Junaid S, Gupta S, Sanghavi S, Anglin C, Emery R, Amis A, Hansen Uet al., 2010,

    Failure mechanism of the all-polyethylene glenoid implant

    , JOURNAL OF BIOMECHANICS, Vol: 43, Pages: 714-719, ISSN: 0021-9290
  • JOURNAL ARTICLE
    Kondo E, Merican AM, Yasuda K, Amis AAet al., 2010,

    Biomechanical Comparisons of Knee Stability After Anterior Cruciate Ligament Reconstruction Between 2 Clinically Available Transtibial Procedures Anatomic Double Bundle Versus Single Bundle

    , AMERICAN JOURNAL OF SPORTS MEDICINE, Vol: 38, Pages: 1349-1358, ISSN: 0363-5465
  • JOURNAL ARTICLE
    Masouros SD, Bull AMJ, Amis AA, 2010,

    (i) Biomechanics of the knee joint

    , Orthopaedics and Trauma, Vol: 24, Pages: 84-91, ISSN: 1877-1327

    The knee joint has biomechanical roles in allowing gait, flexing and rotating yet remaining stable during the activities of daily life, and transmitting forces across it. Geometrical, anatomical and structural considerations allow the knee joint to accomplish these biomechanical roles. These are addressed and discussed in this article. © 2010 Elsevier Ltd. All rights reserved.

  • BOOK CHAPTER
    Masouros SD, McDermott ID, Bull AMJ, Amis AAet al., 2010,

    Biomechanics

    , The Meniscus, Editors: Beaufils, Verdonk, Berlin, Germany, Publisher: Springer, Pages: 29-37, ISBN: 9783642024498

    This clinical guide provides a special focus on the normal meniscal mechanism, body and function.

  • BOOK CHAPTER
    McDermott ID, Masouros SD, Bull AMJ, Amis AAet al., 2010,

    Anatomy

    , The Meniscus, Pages: 11-18, ISBN: 9783642024498

    The menisci are two crescent-shaped fibrocartilagenous structures that are found within each knee between the femoral condyles and the tibial plateau (Fig. 1.2.1). For many years, the menisci were considered to be the functionless remains of a leg muscle [31]. Indeed, in his paper in 1942, McMurray [21] stated that When the knee-joint is opened on the anterior aspect, and the suspected cartilage appears normal, its removal can be undertaken with confidence if the diagnosis of a posterior tear has been arrived at (clinically) prior to operation. A far too common error is shown in the incomplete removal of the injured meniscus. © Springer-Verlag Berlin Heidelberg 2010.

  • JOURNAL ARTICLE
    Stuckey DJ, Ishii H, Chen Q-Z, Boccaccini AR, Hansen U, Carr CA, Roether JA, Jawad H, Tyler DJ, Ali NN, Clarke K, Harding SEet al., 2010,

    Magnetic Resonance Imaging Evaluation of Remodeling by Cardiac Elastomeric Tissue Scaffold Biomaterials in a Rat Model of Myocardial Infarction

    , TISSUE ENGINEERING PART A, Vol: 16, Pages: 3395-3402, ISSN: 1937-3341
  • JOURNAL ARTICLE
    Vandenbussche E, Saffarini M, Hansen U, Taillieu F, Mutschler C, Augereau B, Gregory TMet al., 2010,

    Measurement of femoral head penetration in polyethylene using a 3-dimensional CT-scan technique

    , ACTA ORTHOPAEDICA, Vol: 81, Pages: 563-569, ISSN: 1745-3674
  • CONFERENCE PAPER
    Amadi HO, Hansen UN, Bull AMJ, 2009,

    A numerical tool for the reconstruction of the physiological kinematics of the glenohumeral joint

    , IMechE Conference on Engineering the Upper Limb, Publisher: PROFESSIONAL ENGINEERING PUBLISHING LTD, Pages: 833-837, ISSN: 0954-4119
  • JOURNAL ARTICLE
    Apsingi S, Bull AMJ, Deehan DJ, Amis AAet al., 2009,

    Review: femoral tunnel placement for PCL reconstruction in relation to the PCL fibre bundle attachments

    , KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY, Vol: 17, Pages: 652-659, ISSN: 0942-2056
  • JOURNAL ARTICLE
    Apsingi S, Nguyen T, Bull AMJ, Unwin A, Deehan DJ, Amis AAet al., 2009,

    A comparison of modified Larson and 'anatomic' posterolateral corner reconstructions in knees with combined PCL and posterolateral corner deficiency

    , KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY, Vol: 17, Pages: 305-312, ISSN: 0942-2056
  • JOURNAL ARTICLE
    Chia S-L, Merican AM, Devadasan B, Strachan RK, Amis AAet al., 2009,

    Radiographic features predictive of patellar maltracking during total knee arthroplasty

    , KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY, Vol: 17, Pages: 1217-1224, ISSN: 0942-2056
  • CONFERENCE PAPER
    Chong DYR, Hansen UN, Amis AA, 2009,

    COMPUTATIONAL BIOMECHANICAL ANALYSIS OF FIXATION PERFORMANCE AND BONE RESORPTION OF TIBIAL PROSTHESIS IMPLANTATION

    , ASME Summer Bioengineering Conference, Publisher: AMER SOC MECHANICAL ENGINEERS, Pages: 975-976
  • JOURNAL ARTICLE
    Dickinson A, Browne M, Jeffers J, Taylor Aet al., 2009,

    Pre-clinical analysis of an acetabular cup with improved in vivo stability and integrity

    , Key Engineering Materials, Vol: 396-398, Pages: 31-34
  • JOURNAL ARTICLE
    Ghosh KM, Merican AM, Iranpour F, Deehan DJ, Amis AAet al., 2009,

    The effect of overstuffing the patellofemoral joint on the extensor retinaculum of the knee

    , KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY, Vol: 17, Pages: 1211-1216, ISSN: 0942-2056
  • JOURNAL ARTICLE
    Ghosh KM, Merican AM, Iranpour-Boroujeni F, Deehan DJ, Amis AAet al., 2009,

    Length Change Patterns of the Extensor Retinaculum and the Effect of Total Knee Replacement

    , JOURNAL OF ORTHOPAEDIC RESEARCH, Vol: 27, Pages: 865-870, ISSN: 0736-0266
  • JOURNAL ARTICLE
    Gregory T, Hansen U, Taillieu F, Baring T, Brassart N, Mutchler C, Amis A, Augereau B, Emery Ret al., 2009,

    Glenoid Loosening after Total Shoulder Arthroplasty: An In Vitro CT-Scan Study

    , JOURNAL OF ORTHOPAEDIC RESEARCH, Vol: 27, Pages: 1589-1595, ISSN: 0736-0266
  • CONFERENCE PAPER
    Hopkins AR, Hansen UN, 2009,

    Primary stability in reversed-anatomy glenoid components

    , IMechE Conference on Engineering the Upper Limb, Publisher: PROFESSIONAL ENGINEERING PUBLISHING LTD, Pages: 805-812, ISSN: 0954-4119
  • JOURNAL ARTICLE
    Hopkins AR, Hansen UN, 2009,

    Primary stability in reversed-anatomy glenoid components.

    , Proc Inst Mech Eng H, Vol: 223, Pages: 805-812, ISSN: 0954-4119

    Reversed-anatomy shoulder replacement is advocated for patients with poor rotator cuff condition, for whom an anatomical reconstruction would provide little or no stability. Modern generations of this concept appear to be performing well in the short-term to midterm clinical follow-up. These designs are almost always non-cemented, requiring a high degree of primary stability to encourage bone on-growth and so to establish long-term fixation. Six different inverse-anatomy glenoid implants, currently on the market and encompassing a broad range of geometrical differences, were compared on the basis of their ability to impart primary stability through the minimization of interface micromotions. Fixing screws were only included in the supero-inferior direction in appropriate implants and were always inclined at the steepest available angle possible during surgery (up to a maximum of 30 degrees). The extent of predicted bony on-growth was, of course, highly dependent on the threshold for interface micromotion. In some instances an additional 30 per cent of the interface was predicted to promote bone on-growth when the threshold was raised from 20 microm to 50 microm. With maximum thresholds of micromotion for bone on-growth set to 30 microm, the Zimmer Anatomical device was found to be the most stable of the series of the six designs tested herein, achieving an additional 3 per cent (by surface area) of bone on-growth above the closest peer product (Biomet Verso). When this threshold was raised to 50 microm, the Biomet Verso design was most stable (3 per cent above the second-most stable design, the Zimmer Anatomical). Peak micromotions were not a good indicator of the predicted area of bone on-growth and could lead to some misinterpretation of the implant's overall performance. All but one of the implants tested herein provided primary stability sufficient to resist motions in excess of 150 microm at the interface.

  • JOURNAL ARTICLE
    Jeffers JRT, Roques A, Taylor A, Tuke MAet al., 2009,

    The problem with large diameter metal-on-metal acetabular cup inclination.

    , Bull NYU Hosp Jt Dis, Vol: 67, Pages: 189-192, ISSN: 1936-9719

    Large diameter metal-on-metal hip bearings have proven to be clinically successful in active patients, but, in a small number, they are associated with elevated wear and high metal ion levels when cup inclination angles are too steep and the version is too extreme, or either alone. Based on the geometry of six different commercially available large diameter metal-on-metal acetabular components, this study demonstrated that the critical bearing surface operates at an angle up to 16 masculine greater than the cup face inclination. Due to geometry alone, measured cup inclination is not the angle that most surgeons perceive it to be. We strongly recommend when employing large diameter metal-on-metal bearings that lower inclination and version angles are targeted to prevent excessive wear.

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