Silicone Finger Research Articles

Study protocol for a randomized controlled pilot-trial on the semiocclusive treatment of fingertip amputation injuries using a novel finger cap

Introduction:Fingertip amputation injuries are common in all ages. Conservatively treated fingertips can regenerate skin and soft tissues to form a functionally and cosmetically excellent new fingertip. Little is known about this ability that, in humans, is confined to the fingertips. Even less is known about the role of the bacteria that regularly colonize these wounds without negative impact on regeneration and healing.As an alternative to surgery, self-adhesive film dressings are commonly used to establish a wet chamber around the injury. These dressings leak malodorous wound fluid eventually until the wound is dry. Having that into consideration, we have therefore developed a silicone finger cap that forms a mechanically protected, wet chamber around the injury for optimal regeneration conditions. It contains a puncturable reservoir for excess wound fluid, which can be thus routinely analyzed for diagnostic and research purposes.This study protocol explains the first randomized controlled trial (RCT) on the semiocclusive treatment of fingertip amputations in both children and adults comparing traditional film dressings with the novel silicone finger cap. Being the first RCT using 2 medical devices not yet certified for this indication, it will gather valuable information for the understanding of fingertip regeneration and the design of future definitive studies.Methods and analysis:By employing an innovative pseudo-cross-over-design with a dichotomous primary endpoint based on patients preference, this pilot study will gain statistically significant data with a very limited sample size. Our RCT will investigate acceptance, safety, effectiveness, and efficacy of this novel medical device while gathering information on the clinical course and outcome of conservatively treated fingertip injuries. A total of 22 patients older than 2 years will be randomly assigned to start the conservative treatment with either the traditional film-dressing or the novel finger cap. The treatment will be changed to the other alternative for another 2 weeks before the patient or the guardian is confronted with the decision of which method they would prefer for the rest of the treatment (if required).Ethics and dissemination:Ethical approval (EK 148042015) of the study protocol has been obtained from Institutional Review Board at the TU Dresden. The trial is registered at the European Database on Medical Devices (EUDAMED-No.: CIV-15-03-013246) and at ClinicalTrials.gov (NCT03089060).

Low-Cost Simulation Model for Training MIS Repair of Duodenal Atresia Combined with Telementoring Technology: Initial Assessment

Introduction: The use of minimal invasive surgery (MIS) simulation models has been included into our residency program curricula and hands-on courses since 2013. We have previously presented our low-cost tracheoesophageal fistula esophageal atresia simulation model for training in IPEG 2013. The Society of American Gastrointestinal and Endoscopic Surgeons describes telementoring as a relationship, facilitated by telecommunication technology, in which an expert provides guidance to a less experienced learner from a remote location. MIS procedures are an ideal platform for real-time transmission and thus apply telementoring for surgery. We started a project to look at the efficacy of telementoring starting with simulation. Aim: The aim of this 5 minute video is to present a low-cost simulation model for training MIS repair of duodenal atresia (DA) and our first steps with combining telementoring technology. Material and Methods: The base model was introduced into the abdominal cavity of a rubber doll that resembles a 3 kg newborn. We use silicone finger covers and tubular latex balloons (as proximal and distal duodenum and bowel). The cost of materials was less than $50US. Video endoscopic equipment and 3 mm instruments were used. We reproduced all steps of the procedure: dissection of the proximal pouch, finding the distal duodenum below the transverse mesocolon, opening of both blind duodenal ends and performance of a duodenoduodenal anastomosis. We use a validation sheet to evaluate the performance: number of errors and type of injuries, quality of the anastomosis, and time of practice. A video camera was connected with a videoconference equipment through Internet under 1 MB for telementoring. Two pediatric surgery fellows were mentored by three faculties with focus in both the use of the lens and performance of the correct steps to repair a DA. Both of them had previously attended a basic and advanced MIS hands-on programs in our institution and developed skills for advanced suturing and working in small spaces. Mentors and mentees had a human and academic previous relationship. The development checklist sheet was filled after consensus. Results: The procedure was completed without injuries in 75 minutes. Interaction was effective without need to assist them in person. Discussion: Telementoring MIS simulation could assist in the provision of teaching advanced skills worldwide. No competing financial interests exist. Runtime of video: 5 mins This video was presented at 25th IPEG annual meeting, May 24–28 2016, Fukuoka Japan.

A biomechanical study of the effects of simulated ulnar deviation on silicone finger joint implant failure.

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Prosthetic Rehabilitation of a partially Amputated Finger using a Silicone Prosthesis

ABSTRACT Amputation of a finger will have considerable functional and psychological impact on an individual. Although prosthetic rehabilitation incorporating implants is considered an ideal treatment option, the patient may not give consent due to apprehension toward surgical procedures. The ideal prosthesis should replace the missing part of the finger so precisely that it would not draw the attention of the observer. Fabrication of such a prosthesis will require great technical and artistic expertise. This paper presents a case of prosthetic rehabilitation of an amputated finger using a silicone finger prosthesis. How to cite this article Fernandez T, Harshakumar K, Ravichandran R. Prosthetic Rehabilitation of a partially Amputated Finger using a Silicone Prosthesis. Int J Prosthodont Restor Dent 2016;6(1):10-13.

Concealment of Amputation: Silicone Finger Prosthesis

ABSTRACT Hand deformities affects function and esthetics. Moreover, for the majority of patients, the loss of a finger can lead to psychological problems. This report describes the fabrication of a silicone finger prosthesis for a patient after an accident. The finger prosthesis was retained by a vacuum effect on the stump. The room temperature vulcanizing (RTV) silicone material was used to provide function and esthetics. The finger prosthesis offered psychological, functional, and rehabilitative advantages for the patient. How to cite this article Tomar BS, Chandu GS, Singh S, Sapat M, Khatri M, Jain P. Concealment of Amputation: Silicone Finger Prosthesis. Int J Experiment Dent Sci 2016;5(2):146-150.

Impact of silicone prosthesis on hand function, grip power and grip-force tracking ability after finger amputation.

Literature mostly describes the cosmetic role of prostheses for finger amputation. The impact on hand function has not been systematically explored. Our aim was to describe the impact of silicone finger prostheses on hand function and gripping ability. Prospective descriptive cross-sectional study. We included 42 adult patients with partial or complete single- or multiple-digit amputation of one hand. We evaluated hand function of the injured hand without and with the prosthesis with the Southampton Hand Assessment Procedure, and grip power and tracking ability with a grip-force tracking system. Southampton Hand Assessment Procedure grip index scores were slightly higher when using the prosthesis as compared to not using it (though not reaching the minimum real difference reported in the literature), except for lateral grip. Grip power was not significantly affected by prosthesis use for power grip and lateral grip and slightly diminished for tip grip. Tracking errors only differed with respect to the signal type but not with respect to using the prosthesis. A minimum improvement of hand function can be expected at best with silicone prostheses for finger amputation, accompanied by a slight decrease in tip grip power. Based on our results, an evidence-based explanation can be given to patients after finger amputation regarding the functional benefits that can be expected from a silicone prosthesis.

Osseointegrated silicone finger prosthesis using dental implants: a renovated technique.

In clinical practice, we come across patients with traumatically amputated or congenitally missing partial or complete fingers that can be restored using microsurgical replantation or transplantation procedures. However, in some cases this might not be possible due to systemic or local factors and the lost or missing part has to be replaced prosthetically to offer psychological and functional wellbeing. These prostheses can be constructed with various materials like acrylics or silicone retained with the help of auxiliary aids. However, these prostheses cause some hindrance in performing functions like writing, typing, etc. The aim of the present trial was to ameliorate the existing design of implant supported finger prosthesis. Distal phalange of middle finger replaced with implant supported silicone finger prosthesis is modified by utilizing a metal framework to support silicone material to improve rigidity while working. We could achieve a good function, esthetics and tactile sensibility with this modified design. Whenever, feasible this design can improve the performance and patients feel a deep sense of satisfaction and improved self-esteem with this modified prosthesis.

Improving esthetics of finger prosthesis by glove silicone

Finger and partial finger amputations are some of the most frequently encountered forms of partial hand loss. A high quality esthetic prosthesis with passive function can be helpful to the patient since loss or congenital absence or malformation have both a social and psychological impact on the patient. Prosthetics is an art and science, which provides lifelike appearance to the lost structures of the patient. This case report presents the fabrication of a silicone finger prosthesis, which had good suspension, adequate function, was comfortable to use and esthetically acceptable to the patient.

Design and fabrication of a finger prosthesis based on a new method of suspension

Finger amputation is one of the most common types of amputation. Prosthesis with adequate suspension, user-friendly design, and an aesthetic appearance can be effective in the rehabilitation of these patients. The aim of this technical note was to propose a technique for fabrication of finger prosthesis with a new suspension approach for such patients. To design and accurately fabricate the socket of finger prosthesis, the socket was reduced by 2 mm less than the original value, and a central tunnel with 4 mm width and depth with length matching the distance between the end of the stump and the nail section was provided, so that the silicone material extended to the stump to provide appreciable suspension. This study demonstrated the design and fabrication of a silicone finger prosthesis. It also showed silicone finger prosthesis with acceptable suspension, a user-friendly and light design, and a cosmetic appearance constructed for a patient with finger amputation. Patients with finger amputation usually use prostheses with a simple suspension technique, but evidence suggests that the residuum of these patients experience atrophy and subsequently loss of appropriate suspension. Therefore, this study was required to provide an alternative suspension method in patients with finger amputations.

Silicone finger prostheses for single finger partial amputations: Two case reports

Hand is a body part which is of major importance for communication, body language and social contact along with its basic function of grasping and feeling. Finger and partial finger amputations are some of the most frequently encountered forms of partial hand loss which causes devastating physical, psychosocial and economic damage to an individual. Rehabilitation of amputed finger is of utmost importance and the first choice is microvascular reconstruction. But when it is contraindicated, unavailable, unsuccessful or unaffordable, the prosthetic rehabilitation is an alternative for improving the psychological status of an individual. Silicone finger prosthesis with modern prosthetic designs, fabricated with immense care, can be life-like and can assist the amputee in returning to society socially as well as psychologically.

Patient-specific prosthetic rehabilitation of finger and eye

Physical defects that compromise the appearance or function, which prevents an individual from leading a normal life, usually prompt the individual to seek treatment that will reinstate acceptable normalcy. Prosthesis should be provided as soon as possible to raise the spirits and ease the mind of the afflicted. This case report presents the fabrication of custom-made silicone finger prosthesis and acrylic resin ocular prosthesis in an attempt to avoid costly procedures and provide best possible esthetic results. A high-quality esthetic prosthesis with passive function can be helpful to the patient since loss or congenital absence or malformation have both social and psychological impact on the patient.

Silicone finger prosthesis- An aesthetic treatment option for partial finger amputation.

Silicone finger prosthesis- An aesthetic treatment option for partial finger amputation.

Comprehensive Prosthetic Rehabilitation of a Patient with Partial Finger Amputations using Silicone Biomaterial

Finger and partial finger amputations are some of the most frequently encountered forms of partial hand loss. A high quality aesthetic prosthesis with passive function can be helpful to the patient since loss or congenital absence or malformation have both a social and psychological impact on the patient. Prosthetics is an art and science which provides a lifelike appearance to the lost structures of the patient. This case report presents the fabrication of a silicone finger prosthesis which had good suspension, adequate function, was comfortable to use and aesthetically acceptable to the patient.

An acoustic multi-touch sensing method using amplitude disturbed ultrasonic wave diffraction patterns

This paper proposes an acoustic multi-touch tactile sensing method. The proposed method is based on an amplitude disturbed ultrasonic wave diffraction pattern. An A 0 Lamb wave transmitted in a thin finite copper plate is processed to provide tactile information, for one or two fingers. A touch event is localized by identifying the diffraction signals among a database of diffracted Lamb wave references. Statistic models are used to improve the localization reliability. An artificial silicone finger is used in the calibration procedure. This touch interface is evaluated as a 2-touch interface.

Finger prosthesis: the art of reconstruction.

Hand deformities affect aesthetics function of hand severely compromised and also cause psychological disturbances. This report describes the fabrication of a silicone finger prosthesis for a patient after an accident at work. The finger prosthesis was retained by a vacuum effect on the stump. The silicone material Silastic-MDX 44210 was used to provide function and aesthetics. The finger prosthesis offered psychological, functional and rehabilitative advantages for the patient. Restoring the natural appearance with the prosthesis eliminated the trauma generated by the dysfunction and represented an efficient psychological therapy.

A Multi-Touch Plate Based on Lamb Wave Absorption

In this paper, the A0 Lamb wave propagating in a thin finite copper plate is investigated to design a new multi-touch tactile instrument, which could localize one or several fingers. The position of index is localized by identifying the absorption signals of Lamb waves when it is in contact with the plate. Statistic models are used to improve the robustness of this interface. An artificial silicone finger is fabricated in the calibration procedure. The multi-touch (two fingers or more) applications using this plate is also presented.

Partial hand amputation and work

Purpose. To determine whether or not subjects who had had a partial hand amputation were able to return to the same job and whether or not they used their silicone finger prosthesis for work.Method. Medical records of all the patients who had undergone a traumatic partial hand amputation and who had been treated in the Upper Limb Prosthetic Clinic at the Institute for Rehabilitation in Ljubljana were reviewed. Questionnaires were sent to 112 patients. Forty-eight questionnaires which were returned and had been correctly answered were analysed.Results. The study found that less than half the patients who had had a partial hand amputation were able to do the same work as before the amputation. Less than one-third wore their silicone prosthesis at work regularly. The subjects who did not have manual jobs and who had an amputation of only one or two fingers were able to keep the same job more easily after the amputation. Only a few subjects found their silicone prosthesis useful at work.Conclusion. It can be concluded that partial hand amputation may present a great problem in keeping the same job after amputation. An aesthetic (cosmetic) silicone prosthesis is helpful particularly for subjects with higher education whose work involves personal contacts and for whom aesthetics is important. They use the prosthesis for certain activities, such as typing.

Fabrication of silicone finger prosthesis: A clinical report

Fabrication of silicone finger prosthesis: A clinical report

A technique of acrylic nail fixation in multilayered silicone finger prostheses

A technique for the secure fixation of acrylic nails in multilayered silicone finger prostheses is described. The secure fixation of the nail to the prosthesis is achieved by a method of "sandwiching" portions of the nail between the silicone layers of the prosthesis akin to the overlapping of the nail by the anatomical nail fold and nail wall. In addition the use of a cynoacrylate adhesive ensures strong surface to surface bonding.

Synovitis and silicone joint implants: a summary of reported cases.

AMERICAN SOCIETY OF PLASTIC SURGEONS PLASTIC & RECONSTRUCTIVE SURGERY PRS GLOBAL OPEN ASPS EDUCATION NETWORK AMERICAN SOCIETY OF PLASTIC SURGEONS PLASTIC & RECONSTRUCTIVE SURGERY PRS GLOBAL OPEN ASPS EDUCATION NETWORK