C2 - Prosthetic Free Papers--Principles of Gait and Foot Design

This session contains the following free papers

(C2A) Clinical Survey of Transtibial and Transfemoral Initial Alignment Methodologies -
Presenter: Gerald Stark, PhD, MSEM, CPO/L, FAAOP(D) – OttoBock
Clinically, transtibial and transfemoral initial alignment methodology seems to differ greatly between clinicians and locations, even though many of the parameters and guidelines have been historically established in prosthetic programs. Anecdotally the author has encountered many heuristics that vary and may be reflective of clinic type, volume of fittings, and experience level. Transtibial and “Other” and “Natural” alignment was rated highly, which may indicate greater individuality of alignment heuristics.

(C2B) Ground Clearance and Compensatory Strategies – Influencing Factors for Lower Limb Prosthetics -
Presenter: Malte Bellmann, PhD – Ottobock
Tripping is a safety risk for lower limb amputees, and it is mainly affected by ground clearance during prosthetic side swing phase. The results showed that the prosthetic alignment as well as the swing phase control of the prosthetic knee joint have a strong impact on the resulting ground clearance and compensatory strategies. A more anterior aligned prosthetic knee joint and a more posterior aligned foot can enhance ground clearance. Furthermore, a swing phase control that enables adequate knee flexion independent to the walking velocity is crucial for ensuring ground clearance.

(C2C) Prospective Fall Risk Measures in People Who Used a Unilateral Lower-limb Prosthesis -
Presenter: Graci Finco, PhD, CPO – Faculty, Baylor College of Medicine
Learn what clinical outcome measures were able to significantly distinguish 6-month prospective fallers from non-fallers.

(C2D) Compensatory Trunk Movements of Transfemoral Amputees When Walking with Different Gait Velocities
Presenter: Eva Probsting, Dipl-Ing – Ottobock
The lateral trunk lean analyzed with a segment using the C7, the sacrum and the center of pelvis was compared between transfemoral amputees and non amputees walking with three different velocities (slow, mid, fast).

(C2E) A Pilot Study to Evaluate the Effects of Hydraulic Ankle- foot Prostheses on Standing and Walking Performance in k2-level Ambulators
Presenter: Steven A. Gard, PhD – Executive Director, Northwestern University Prosthetics-Orthotics Center
Prosthesis users perform many basic walking activities indoors and outdoors, where traversing uneven terrain and slopes, or ascending and descending stairs, may be necessary in addition to level-ground walking. Increased prosthetic ankle range of motion (ROM) may lead to improved kinematics and kinetics on slopes and stairs in K2-level transtibial amputees. Hydraulic ankle-foot components can adapt to uneven ground and have an increased ankle joint ROM that may be beneficial for transtibial amputees in performing daily mobility tasks.

(C2F) Scoping Review of the Evidence on Powered Prosthetic Ankle-foot Components
Presenter: Andreas Kannenberg, MD (GER), PhD – Executive Medical Director, Otto Bock Healthcare LP
This paper will give an overview on the state of the evidence on the benefits of powered prosthetic ankle-foot components and clinical considerations for patient selection and successful fitting.