This paper describes the development of a tendon-driven, multi-fingered dexterous robot hand for space operations. This hand can achieve cylindrical grasps while producing a holding strength necessary for grasping several crew aids, tools (CATs) and interfaces. The design is based on grasping requirements for 242 CATs and interfaces found in the extravehicular activity (EVA) Tools and Equipment...

Complications involving the knee extensor mechanism and patellofemoral joint occur in 1% to 12% of patients following total knee arthroplasty and have major negative effects on patient outcomes and satisfaction. The surgeon must be aware of intraoperative, postoperative, and patient-related factors that can increase the rate of these problems. This review focuses on six of the most commonly enc...

For a new class of tendon-driven robotic systems that is generalized to include tensegrity structures, this paper focuses on a method to determine the tendon force inputs from a set of admissible, non-saturating inputs, that will move the rigidbody system from point A to point B along a prescribed path in minimum time. The approach utilizes the existence conditions and solution of a linear alge...

A distinctive feature of embryonic tendon development is the steady increase in collagen fibril diameter and associated improvement of tissue mechanical properties. A potential mechanical stimulus for these changes is slow stretching of the tendon during limb growth. Testing this hypothesis in vivo is complicated by the presence of other developmental processes including muscle development and ...

There has been a renewed interest in recent years to work towards robotic hands that are effective in addressing the needs of modern robotic systems. As robots increasingly move out of the lab and into unstructured environments, the need for hands designed to function under the uncertainty and wide range of conditions associated with those environments has become more pressing. This special iss...

background tendon injuries are one of the most common injuries of the hand and challenging problems in trauma surgery. they usually require surgical repair and unlike the single tendon injuries, flexor tendon injuries have higher morbidities when accompanied with nerve injuries. in the present study, i aimed to report the clinical experiences and outcomes about tendon injuries. methods a total ...

in this report we describe our encounter of a case of hand trauma referred to our center presenting with incomplete left thumb amputation at metacarpal level with extensor pollicis longus (epl) and flexor pollicis longus (fpl) tendon avulsion from the tenomuscular junction. after metacarpal bone fixation the ulnar digital artery was anastomosed and the digital nerves were coapted. transfer of e...

BACKGROUND Tendon injuries are one of the most common injuries of the hand and challenging problems in trauma surgery. They usually require surgical repair and unlike the single tendon injuries, flexor tendon injuries have higher morbidities when accompanied with nerve injuries. In the present study, I aimed to report the clinical experiences and outcomes about tendon injuries. METHODS ...

Background: Bilateral rupture of the patellar tendon is a very rare injury, which takes place in relation to chronic systemic diseases. These injuries are known causes. Some of these causes are particular in patellar tendon rupture and another are in quadriceps tendon rupture. Case presentation: 70-year-old diabetic man with simultaneous bilateral patellar tendon disruption of proximal inser...