Temporal characteristics of foot rollover of amputee walking gait when using an Energy Storage and Return prosthesis.

Background: Energy Storage and Return (ESAR) prosthetic feet provide improved walking when compared with previous designs. However, it may not mimic the unimpaired smooth and progressive movement of the foot on the floor (foot rollover).

Objective: To characterize the temporal foot rollover of participants with unilateral transtibial amputation using an ESAR prosthetic foot.

Angular Kinematics at Minimum Toe Clearance in People With Transtibial Amputation Using Articulated and Nonarticulated Prosthesis.

Subjects with unilateral transtibial amputation exhibit altered minimum toe clearance (MTC) depending on the ankle prosthesis used. It has been suggested that a limited prosthetic ankle angle could be the cause of the change. The aim of this study was to investigate the alterations in kinematics in the joints responsible for the changes in MTC when using an articulating hydraulic ankle (AHA) prosthesis compared to a nonarticulating ankle (NAA) prosthesis.

Landing error scoring system: A scoping review about variants, reference values and differences according to sex and sport.

Objective: The Landing Error Scoring System (LESS) is a movement analysis tool proposed to identify the risk of anterior cruciate ligament injuries, very useful for injury prevention. The aim of this study is to review the variants of the LESS, their normative scores and the differences according to sex and sport practiced.

Methods: PubMed, Scopus and ScienceDirect databases were searched from inception to October 19, 2023.

Minimum toe clearance and tripping probability in people with unilateral transtibial amputation walking on ramps with different prosthetic designs.

Background: Minimum Toe Clearance (MTC) is defined as the minimum vertical distance between the lowest point under the front part of the foot and the ground, during mid-swing. Low values of MTC and walking on inclines are both related to higher probability of tripping and falling in lower limb amputees. New prosthetic designs aim at improving MTC, especially on ramps, however the real effect on MTC still needs investigation.

Assessment of the energy-related cost function over a range of walking speeds.

Cost funtions are needed for calculation of muscle forces in musculoskeletal models. The behavior of the energy-related cost function, proposed by Praagman et al. (J Biomech 39(4):758-765, 2006.

A subject-specific integrative biomechanical framework of the pelvis for gait analysis.

Analysis of the human locomotor system using rigid-body musculoskeletal models has increased in the biomechanical community with the objective of studying muscle activations of different movements. Simultaneously, the finite element method has emerged as a complementary approach for analyzing the mechanical behavior of tissues. This study presents an integrative biomechanical framework for gait analysis by linking a musculoskeletal model and a subject-specific finite element model of the pelvis.

Gait event detection during stair walking using a rate gyroscope.

Gyroscopes have been proposed as sensors for ambulatory gait analysis and functional electrical stimulation systems. These applications often require detection of the initial contact (IC) of the foot with the floor and/or final contact or foot off (FO) from the floor during outdoor walking. Previous investigations have reported the use of a single gyroscope placed on the shank for detection of IC and FO on level ground and incline walking.