Background Definition and clinical diagnosis of instability in TKA is challenging. Sensitive objective biomechanical tools to aid are currently lacking. This proof-of-concept study evaluates the use pressure mat analyses identify abnormal loading patterns associated with within an outpatient setting. Methods Twenty participants were examined: 10 patients suspected unilateral healthy controls. P...

The aim of the study was to assess the validity and reliability of using the Portapres® to measure toe blood pressure during rest and exercise. Construct validity, concurrent validity, and interday reliability were assessed by measuring toe (Portapres®)) and brachial blood pressure in 16 nondisabled participants on consecutive days. Construct validity was assessed by pedaling on a cycle ergomet...

The design of a knee joint is a key issue in robotics and biomechanics to improve the compatibility between prosthesis and human movements and to improve the bipedal robot performances. We propose a novel design for the knee joint of a planar bipedal robot, based on a four-bar linkage. The dynamic model of the planar bipedal robot is calculated. We design walking reference trajectories with dou...

UNLABELLED BACKGROUND Arthritic toe pathologies frequently lead to the development of painful apical pressure skin lesions that can compromise gait and affect quality of life. Historically conservative treatments involve the use of a toe prop with the intended aim of reducing plantar pressure from the apex of the digit. However, the effect of toe prop treatment on plantar digital pressure ha...

BACKGROUND Dynamic knee valgus contributes to injuries of the anterior cruciate ligament (ACL). However, it is unclear how the knee rotates during dynamic knee valgus. Knee rotation significantly affects ACL strain. To understand knee rotation during dynamic knee valgus should help the clinician evaluate dynamic alignment. The purpose of this study was to determine how the knee rotates during d...

The duration of stance and swing phase and step and stride length are important parameters in human gait. In this technical note a low-cost ultrasonic motion analysis system is described that is capable of measuring these temporal and spatial parameters while subjects walk on the floor. By using the propagation delay of sound when transmitted in air, this system is able to record the position o...

Method We treated 31 patients of RCC with IVC invasion with lung metastasis in one, after categorising under Mayo Classification. Preoperatively metastasis and thrombus extent were determined by computed tomography. Sternotomy or thoracotomy was performed for supradiaphragmatic IVC thrombus, 2 patients were found unfit to undergo surgery on CPB so operated by off-pump intrapericardial IVC clamp...

Nowadays, a growing number of young and more active patients receive hip replacement. More strenuous activities in such patients involve higher friction and wear rates, with friction on the bearing surface being crucial to ensure arthroplasty survival in the long term. Over the last years, the polycarbonate-urethane has offered a feasible alternative to conventional bearings. A finite element m...

The start in swimming is a crucial phase of race, where improvements performance can be made. Twenty-four elite swimmers race pace starts were recorded from five above and below water 50 Hz video cameras. Body position at toe off was calculated the recordings consisted two-dimensional mass centre off, arm, trunk, front leg rear angles.Horizontal, vertical resultant velocity time to 5 m, 10 m 15...

Knowledge of how the nervous system deals with surfaces with different physical properties such as compliance that challenge balance during locomotion is of importance as we are constantly faced with these situations every day. The purpose of this study was to examine the control of center of mass (COM) and lower limb dynamics and recovery response modulation of muscle activity during locomotio...