Periosteum is a promising tissue engineering scaffold in research of cartilage repair; so far however, periosteum transfers have not been realized successfully because of insufficient nourishment of the graft. In a translational approach we, for the first time, designed a vascularized periosteum flap as 'independent' biomaterial with its own blood supply to address this problem and to reconstru...

OBJECTIVE To compare biomechanical stiffness of cadaveric canine cervical spine constructs stabilized with bicortical stainless steel pins and polymethylmethacrylate (PMMA), monocortical stainless steel screws with PMMA, or monocortical titanium screws with PMMA. STUDY DESIGN Biomechanical cadaver study. ANIMALS Eighteen canine cervical vertebral columns (C2-C7) were collected from skeletal...

OBJECTIVE Rod-screw fixation systems are widely used for spinal instrumentation. Although many biomechanical studies on rod-screw systems have been carried out, but the effects of rod contouring on the construct strength is still not very well defined in the literature. This work examines the mechanical impact of straight, 20° kyphotic, and 20° lordotic rod contouring on rod-screw fixation syst...

The anterior cruciate ligament (ACL) of the knee fails to heal after primary repair. Here we hypothesize that a beneficial biologic repair response can be induced by placing a collagen-platelet rich plasma (collagen-PRP) material into a central ACL defect. A collagen-PRP scaffold was used to treat a central ACL defect in vivo. In the first experiment, the histologic response in treated and untr...

HYPOTHESIS Many authors suggest that subscapularis deficiency after shoulder arthroplasty has a negative effect on long-term outcomes. Thus, increasing emphasis has been placed on the technique for repair of the tendon. This study evaluated the biomechanical strength of 3 different repairs: osteotomy, tendon to bone, and a combined method. MATERIALS AND METHODS Twenty-four paired shoulders fr...

STUDY DESIGN Controlled laboratory study using a cross-sectional design. OBJECTIVES To examine the kinematics and kinetics of the trunk and the physical characteristics of trunk and hip in golfers with and without a history of low back pain (LBP). BACKGROUND Modified swing patterns and general exercises have been suggested for golfers with back pain. Yet we do not know what contributes to L...

The purpose of this study was to compare the stability and force of ultimate failure of the acromioclavicular joint (ACJ) after direct arthroscopic distal clavicle excision (DCE) through superior portals and indirect arthroscopic DCE through inferior portals in paired cadaveric shoulders. Ten paired saline-embalmed cadaveric shoulders were operated alternatively using the indirect and direct te...

Abstract Aim Before being marketed, hernia mesh must undergo in vivo testing, which often includes biomechanical and histological assessment. Currently there are no universal standards for this testing methods vary greatly within the literature. A scoping review of relevant studies was undertaken to analyse methodologies used testing. Method Medline Embase databases were searched studies. 513 a...

OBJECTIVES This study aims to perform a biomechanical comparison of changes on motion segments after minimally invasive percutaneous endoscopically discectomized and intact spine and to investigate the effects of endoscopic discectomy on the lumbar spine of the lamb. MATERIALS AND METHODS Ten fresh-frozen lamb spines were used in this study. Percutaneous endoscopic discectomy was performed on...