The assistive robot system adaptive head motion control for user-friendly support (AMiCUS) has been developed to increase the autonomy of motion impaired people. The six degrees of freedom robot arm with gripper is controlled with head motion and head gestures only, so especially tetraplegics benefit from collaboration with AMiCUS. In this paper, a usability study with a total number of 30 subjects was conducted to validate the AMiCUS interaction technology and design. 24 able-bodied subjects of demographically diverse groups and 6 tetraplegics participated in this paper. All subjects performed different pick and place tasks by controlling AMiCUS. The evaluation of the interaction design was carried out subjectively with a questionnaire as well as objectively by measurement of time, completion rate, and number of trials for correct head gesture performance. The influence of several factors like age, sex, motion impairment, and previous experience on head motion-based human-robot interaction was analyzed. The interaction design has been proven successful in laboratory environment and assessed overall positive by the subjects. The results of the presented paper confirm the usability of the assistive robot AMiCUS. AMiCUS has the potential to benefit tetraplegics by improving their independence in activities of daily living and adapted workplaces.
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http://dx.doi.org/10.1109/TNSRE.2017.2765362 | DOI Listing |
BMC Musculoskelet Disord
January 2025
Department of Orthopedics, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China.
Background: Displaced tibial tubercle (TT) fractures in adolescents are typically treated with open reduction and internal fixation. While metallic screw (MS) fixation provides strong stability, it often results in a high incidence of postoperative screw head protrusion or irritation, leading to additional removal surgery. Bioabsorbable screw (BS) fixation presents an alternative that may avoid these issues, though its stability has not yet been extensively documented in the literature.
View Article and Find Full Text PDFCurr Biol
January 2025
Johns Hopkins University, Department of Biomedical Engineering, 720 Rutland Avenue, Baltimore 21205, USA. Electronic address:
The integration of different sensory streams is required to dynamically estimate how our head and body are oriented and moving relative to gravity. This process is essential to continuously maintain stable postural control, autonomic regulation, and self-motion perception. The nodulus/uvula (NU) in the posterior cerebellar vermis is known to integrate canal and otolith vestibular input to signal angular and linear head motion in relation to gravity.
View Article and Find Full Text PDFCase: We present a 79-year-old woman with a complex elbow fracture including a comminuted proximal ulna fracture, coronoid process fracture, and comminuted radial head fracture treated with primary total elbow arthroplasty (TEA). The patient completed an early therapy protocol and had complete healing. At 15 months postoperatively, she had full pronosupination and elbow arc of motion from 10 to 135° with no reported pain.
View Article and Find Full Text PDFOrthop J Sports Med
January 2025
Department of Orthopaedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
Background: The aim of surgical treatment for posterolateral rotatory instability (PLRI) of the elbow is to restore the integrity of the lateral ulnar collateral ligament (LUCL), with ligamentous reconstruction being the preferred option for recurrent symptomatic PLRI. However, there is no clinical evidence demonstrating the superiority of reconstruction versus repair. Treatment options currently depend on the cause of the LUCL injury and surgeon preference.
View Article and Find Full Text PDFArthrosc Tech
December 2024
Department for Orthopedics and Trauma Surgery, Martin Luther Hospital Berlin, Berlin, Germany.
Indication for this hemi-wedge high tibial osteotomy is the combination of medial osteoarthritis or cartilage damage, varus deformity of >10°, and medial proximal tibial angle of <80°. The proximal lateral tibia is exposed via a skin incision of approximately 10 cm length between the tibial tuberosity and the head of the fibula. After detachment of the anterior tibial muscle, a first oblique guidewire marks the main osteotomy plane and a second guidewire marks the hemi-wedge.
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