Elbow dislocations are a common orthopedic injury, but the ideal reduction method remains elusive. The complex trochoginglymus anatomy of the joint, along with the close proximity to neurovascular structures, makes the elbow a challenge to reduce. Elbow dislocations occur at a rate of approximately 6 to 8 cases per 100,000 individuals and account for 10% to 25% of all elbow injuries annually.1 ...

In this paper, a calibration method to compensate for changes in SEMG amplitude with joint angle is introduced. Calibration factors were derived from constant amplitude surface electromyogram (SEMG) recordings from the biceps brachii (during elbow flexion) and the triceps brachii (during elbow extension) across seven elbow joint angles. SEMG data were then recorded from the elbow flexors (bicep...

The elbow is a complex joint that is the mechanical link in the upper extremity between the hand and the shoulder. Loss of elbow function can severely affect activities of daily living. Arthrodesis of the elbow results in greater functional disability than arthrodesis of the ankle, hip, or knee joints. Arthrodesis is mainly performed for severe joint destruction most commonly due to posttraumat...

Recent studies of motor coordination have emphasized the importance of the mechanical properties of muscle in both load compensation-and in the control of movement. Teleologically, different mechanical characteristics may be optimal for different tasks. For example, a skiier may wish to adjust the stiffness of his legs in accordance with the terrain and snow conditions. How, and to what extent ...

OBJECTIVE The purpose of this study was to design and implement a transducer to measure accurately the isometric elbow moments produced by individuals with tetraplegia. DESIGN The device needed to be insensitive to off-axis moments and proximal joint motions and be capable of being used over a wide range of elbow and shoulder positions in an outpatient clinic setting. BACKGROUND Measurement...

Muscle models are the essential components of any musculoskeletal simulation. In addition, muscle models which are incorporated in neural-based prosthetic and orthotic devices may significantly improve their performance. The aim of the study was to compare the performances of two types of muscle models in terms of predicting the moments developed at the human elbow joint complex based on joint ...

Everyday actions invariably consist of a combination of discrete and rhythmic elements within or across joints. The study investigated constraints arising from the co-occurrence of the two actions in a two-joint task and how endpoint trajectories are shaped due to these action elements at the joint level. The task consisted of an elbow oscillation in the plane that was to be merged with a fast ...