Bilal Farouk El-Zayat

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No evidence-based guidelines are available to determine the appropriate stem length, and whether or not to cement stems in revision total knee arthroplasty (TKA). Therefore, the objective of this study was to compare stresses and relative movement of cemented and uncemented stems of different lengths using a finite element analysis. A finite element model(More)
BACKGROUND A great variety of methods for the stabilisation of periprosthetic fractures around total hip (THA) or total knee arthroplasty (TKA) have been described. We present the data of our experience in combining a polyaxial, anatomical locking plate with a standardised less invasive technique in the treatment of periprosthetic and peri-implant (femoral(More)
BACKGROUND The aim of this study is the presentation of the polyaxial locking NCB-plate in the treatment of femoral fractures, especially in elderly patients and in proximity of a prosthetic implant. The reduction and fixation of these fractures is a challenging surgical procedure with high complication rates reported up to 40%. PATIENTS AND METHODS A(More)
Orexin-A (OXA) regulates food intake and energy homeostasis. It increases insulin secretion in vivo and in vitro, although controversial effects of OXA on plasma glucagon are reported. We characterized the effects of OXA on glucagon secretion and identify intracellular target molecules in glucagon-producing cells. Glucagon secretion from in situ perfused(More)
BACKGROUND Assessment of shoulder mobility is essential for diagnosis and clinical follow-up of shoulder diseases. Only a few highly sophisticated instruments for objective measurements of shoulder mobility are available. The recently introduced DynaPort MiniMod TriGyro ShoulderTest-System (DP) was validated earlier in laboratory trials. We aimed to assess(More)
BACKGROUND Periprosthetic femur fractures in elderly patients are a challenging surgical procedure. The aim of this study was a prospective evaluation of minimally invasive implantation of non-contact bridging (NCB-DF®) plates. PATIENTS AND METHODS A total of 30 osteosynthesis procedures in 29 patients (average age 76 years and mean ASA 2.9) with complex(More)
BACKGROUND CONTEXT Thoracolumbar extension-distraction fractures are rare injuries mainly restricted to patients suffering from ankylosing spinal disorders. The most appropriate surgical treatment of these unstable spinal injuries remains to be clarified. PURPOSE To report on a cohort of 10 patients treated with closed reduction and percutaneous dorsal(More)
PURPOSE Modular bicompartmental knee arthroplasty (BKA) for treatment of medio-patellofemoral osteoarthritis (OA) should allow for close to normal kinematics in comparison with unicondylar knee arthroplasty (UKA) and the native knee. There is so far no data to support this. SCOPE Six fresh frozen full leg cadaver specimens were prepared and mounted in a(More)
INTRODUCTION Synthol is a site enhancement oil used by bodybuilders to boost the cosmetic appearance of muscles. Here, we describe the case of a patient with severe side effects following repeated intramuscular injections of synthol in his right biceps muscle. CASE PRESENTATION A 29-year-old Middle Eastern male bodybuilder, following intramuscular(More)
PURPOSE It is assumed that unicondylar knee arthroplasty (UKA) features kinematics close to the natural knee. Clinical studies have also shown functional benefits for UKA. There is to date only little biomechanical data to support or explain these findings. The purpose of this study was to investigate whether UKA is able to preserve natural knee kinematics(More)