ABSTRACT Degradation of bovine small intestine and respective effects on biomechanics have not been described to date. Biomechanical testing intestinal tissues is often carried out within a few hours donor death tissue deterioration accounted for. Freezing efficient for the preservation several tissues; however, it may cause cellular damage. This study investigated morphologic biomechanical cha...

Accurate knowledge of biomechanical characteristics of tissues is essential for developing realistic computer-based surgical simulators incorporating haptic feedback, as well as for the design of surgical robots and tools. Most past and current biomechanical research is focused on soft and hard anatomical structures that are subject to physiological loading while testing the organs in situ. Int...

PURPOSE The purpose of this study was to assess the biomechanical performance of the long head of the biceps tenodesis with an interference screw with respect to screw depth. METHODS Twenty-one human cadaveric shoulders were randomized into 3 treatment groups (7 each): interference screw placed flush to the humeral cortex, 50% proud, or fully recessed. Bone density was determined, and subpect...

IntroductionNumerous studies have sought to quantify the biomechanical effects of posterior spinal fusion and disc arthroplasty; however, the results from these studies are conflicting. Additionally, the variety of techniques utilized during biomechanical testing complicates comparing results of instrumentation studies. Two distinct methods of experimental loading protocols have emerged to test...

BACKGROUND The biomechanical behavior of total disc replacement (TDR) and anterior cervical discectomy and fusion (ACDF) incomplex multiplanar motion is incompletely understood. The purpose of this study was to determine whether ACDF or TDR significantly affects in vitro kinematics through a range of complex, multiplanar motions. METHODS Seven human cervical spines from C4-7 were used for thi...

This paper investigates whether there is a discrepancy between stated and actual aims in biomechanical research, particularly with respect to hypothesis testing. We present an analysis of one hundred papers recently published in The Journal of Experimental Biology and journal of Biomechanics, and examine the prevalence of papers which (a) have hypothesis testing as a stated aim, (b) contain hyp...

Physical testing is commonly performed to answer important biomechanical questions in the treatment of patients with fractures and other orthopaedic conditions. However, a variety of mistakes that are made in performing such investigations can severely limit their impact. The goal of this article is to discuss important aspects of study design to consider when planning for biomechanical investi...

PURPOSE To evaluate the ability of purified human bone marrow-derived mesenchymal stem cells (MSCs) to augment healing of an acute small- to medium-sized rotator cuff repair in a small-animal model, evaluating the structure and composition of the healing tendon-bone interface with histologic and biomechanical analyses. METHODS Fifty-two athymic rats underwent unilateral detachment and transos...

BACKGROUND Very little biomechanical or histological data exist in the peer-reviewed literature comparing absorbable monofilament sutures to commercially-available knotless, absorbable barbed suture devices for cosmetic closure of skin incisions. OBJECTIVES The authors compare two commercially-available knotless, barbed suture devices against a conventional monofilament suture in a porcine mo...

BACKGROUND Treatment options for comminuted tibial shaft fractures include plating, intramedullary nailing, and external fixation. No biomechanical comparison between an interlocking tibia nail with external fixation by an Ilizarov frame has been reported to date. In the present study, we compared the fatigue behaviour of Ilizarov frames to interlocking intramedullary nails in a comminuted tibi...