The Vienna psychosocial assessment procedure for bionic reconstruction in patients with global brachial plexus injuries

[Prosthetic Fitting Concepts after Major Amputation in the Upper Limb - an Overview of Current Possibilities]

BACKGROUND

The upper extremity and particularly the hands are crucial for patients in interacting with their environment, therefore amputations or severe damage with loss of hand function significantly impact their quality of life. In cases where biological reconstruction is not feasible or does not lead to sufficient success, bionic reconstruction plays a key role in patient care. Classical myoelectric prostheses are controlled using two signals derived from surface electrodes in the area of the stump muscles. Prosthesis control, especially in high amputations, is then limited and cumbersome. The surgical technique of Targeted Muscle Reinnervation (TMR) offers an innovative solution: The major arm nerves that have lost their target organs due to amputation are rerouted to muscles in the stump area. This enables the establishment of cognitive control signals that allow significantly improved prosthesis control.

PATIENTS/MATERIALS AND METHODS

A selective literature review on TMR and bionic reconstruction was conducted, incorporating relevant articles and discussing them considering the clinical experience of our research group. Additionally, a clinical case is presented.

RESULTS

Bionic reconstruction combined with Targeted Muscle Reinnervation enables intuitive prosthetic control with simultaneous movement of various prosthetic degrees of freedom and the treatment of neuroma and phantom limb pain. Long-term success requires a high level of patient compliance and intensive signal training during the prosthetic rehabilitation phase. Despite technological advances, challenges persist, especially in enhancing signal transmission and integrating natural sensory feedback into bionic prostheses.

CONCLUSION

TMR surgery represents a significant advancement in the bionic care of amputees. Employing selective nerve transfers for signal multiplication and amplification, opens up possibilities for improving myoelectric prosthesis function and thus enhancing patient care. Advances in the area of external prosthetic components, improvements in the skeletal connection due to osseointegration and more fluid signal transmission using wireless, fully implanted electrode systems will lead to significant progress in bionic reconstruction, both in terms of precision of movement and embodiment.

Toward higher-performance bionic limbs for wider clinical use

Most prosthetic limbs can autonomously move with dexterity, yet they are not perceived by the user as belonging to their own body. Robotic limbs can convey information about the environment with higher precision than biological limbs, but their actual performance is substantially limited by current technologies for the interfacing of the robotic devices with the body and for transferring motor and sensory information bidirectionally between the prosthesis and the user. In this Perspective, we argue that direct skeletal attachment of bionic devices via osseointegration, the amplification of neural signals by targeted muscle innervation, improved prosthesis control via implanted muscle sensors and advanced algorithms, and the provision of sensory feedback by means of electrodes implanted in peripheral nerves, should all be leveraged towards the creation of a new generation of high-performance bionic limbs. These technologies have been clinically tested in humans, and alongside mechanical redesigns and adequate rehabilitation training should facilitate the wider clinical use of bionic limbs.

Effective long-term management of brachial plexus injury following surgery: What is needed from hand therapists' perspectives

INTRODUCTION

Traumatic, brachial plexus injuries (BPI) result represent a significant cost to the individual and society. Recovery involves multiple surgeries, takes years, and often results in permanent physical dysfunction. While the last couple of decades have seen advancements in surgical management, the BPI rehabilitation literature has not kept pace with these developments.

PURPOSE

We aim to explore the experience of public and privately employed hand therapists' in delivering effective long-term rehabilitation services to inviduals with BPI in Australia.

METHODS

An interpretative qualitative study. Two focus groups were conducted with Australian hand therapists' (n = 10). Data were analyzed using an inductive thematic approach.

RESULTS

Three key themes were generated from the data. The first theme 'Falling through the gaps: overlooked components of therapy for BPI' captures participants' thoughts on postinjury health care and rehabilitation services. The second 'Developing a therapeutic alliance: underpinned by time and trust' relates to the relationship building challenges and opportunities following trauma that will withstand the long-term recovery of individuals following BPI. The last theme, 'Factors required for professional development: knowledge and support,' considers the variation seen with these clients in relation to therapy needs and outcomes.

CONCLUSIONS

The findings of this study highlight the need to better equip hand therapists' skills and knowledge in responding to pain and psychological management post BPI. Our results reinforce the benefit of interdisciplinary models of care in the management of individuals with BPI.

Brachial plexus injury: living with uncertainty

PURPOSE

A traumatic brachial plexus injury (BPI) has life-changing consequences for patients and their families. Despite advancements in treatments final outcome is unpredictable depending on factors including time to treatment, injury severity, neural regeneration, and available interventions. The final outcome may not be seen for up to four years. This study aimed to explore the impact of uncertainty on people with a traumatic BPI.

METHODS

Secondary qualitative analysis was conducted on data from a study exploring outcomes important to patients with a traumatic BPI. Data from semi-structured interviews with adult traumatic BPI patients (n = 13) were analyzed using reflexive thematic analysis.

RESULTS

Three major themes were identified in the qualitative data: (i) "I don't know what happened to me," focused on uncertainty in diagnosis. (ii) "I went to work one day… and then it all changed" centered around uncertainty in the future. (iii) Coping with uncertainty.

CONCLUSION

The results illustrate that people with a traumatic BPI face uncertainty regarding diagnosis, prognosis, and surrounding their roles in the future. Individuals respond to uncertainty in different ways and this needs to be understood by health care professionals. IMPLICATIONS FOR REHABILITATIONHealth professionals should consider uncertainty in all their contacts with people who have experienced a traumatic brachial plexus injury.People with a traumatic brachial plexus injury experience uncertainty in different ways therefore education and information given may be optimized if tailored to the individual rather than generic.Increasing awareness of the injury and its presentation in non-specialist acute care clinicians may accelerate diagnosis and reduce initial uncertainty.Acknowledging the presence of uncertainty is important during the shared decision-making in brachial plexus injuries.

Rehabilitation of high upper limb amputees after Targeted Muscle Reinnervation

STUDY DESIGN

This is a Delphi study based on a scoping literature review.

INTRODUCTION

Targeted muscle reinnervation (TMR) enables patients with high upper limb amputations to intuitively control a prosthetic arm with up to six independent control signals. Although there is a broad agreement regarding the importance of structured motor learning and prosthetic training after such nerve transfers, to date, no evidence-based protocol for rehabilitation after TMR exists.

PURPOSE OF THE STUDY

We aimed at developing a structured rehabilitation protocol after TMR surgery after major upper limb amputation. The purpose of the protocol is to guide clinicians through the full rehabilitation process, from presurgical patient education to functional prosthetic training.

METHODS

European clinicians and researchers working in upper limb prosthetic rehabilitation were invited to contribute to a web-based Delphi study. Within the first round, clinical experts were presented a summary of recent literature and were asked to describe the rehabilitation steps based on their own experience and scientific evidence. The second round was used to refine these steps, while the importance of each step was rated within the third round.

RESULTS

Experts agreed on a rehabilitation protocol that consists of 16 steps and starts before surgery. It is based on two overarching principles, namely the necessity of multiprofessional teamwork and a careful selection and education of patients within the rehabilitation team. Among the different steps in therapy, experts rated the training with electromyographic biofeedback as the most important one.

DISCUSSION

Within this study, a first rehabilitation protocol for TMR patients based on a broad experts' consensus and relevant literature could be developed. The detailed steps for rehabilitation start well before surgery and prosthetic fitting, and include relatively novel interventions as motor imagery and biofeedback. Future studies need to further investigate the clinical outcomes and thereby improve therapists' practice.

CONCLUSION

Graded rehabilitation offered by a multiprofessional team is needed to enable individuals with upper limb amputations and TMR to fully benefit from prosthetic reconstruction.

LEVEL OF EVIDENCE

Low.

Case Report: Bionic Reconstruction in an Adult With Obstetric Brachial Plexus Injury

Introduction: Many adults who had a severe Narakas IV obstetric brachial plexus injury (OBPI) suffer from extensive impairments in daily living due to limited hand-arm function. The dramatic loss of axonal support at this very early age of development often render the entire extremity a biologic wasteland and reconstructive methods and therapies often fail to recover any functional hand use. In this scenario bionic reconstruction, including an elective amputation and a subsequent prosthetic fitting, may enable functional improvement in adults suffering from the consequences of such severe brachial plexus injuries. We here describe our experience in treating such patients and lay out the surgical rational and rehabilitation protocol exemplified in one patient.

Case Presentation/Methods: A 27-year-old adult with a unilateral OBPI contacted our center. He presented with globally diminished function of the affected upper extremity with minimal hand activity, resulting in an inability to perform various tasks of daily living. No biological reconstructive efforts were available to restore meaningful hand function. An interdisciplinary evaluation, including a psychosocial assessment, was used to assess eligibility for bionic reconstruction. Before the amputation and after the prosthetic fitting functional assessments and self-reported questionnaires were performed.

Results: One month after the amputation and de-rotation osteotomy of the humerus the patient was fitted with a myoelectric prosthesis. At the 1.5 year-follow-up assessment, the patient presented with a distinct improvement of function: the ARAT improved from 12 to 20 points, SHAP score improved from 8 to 29, and the DASH value improved from 50 to 11.7. The average wearing times of the prosthesis were 5 to 6 h per day (on 4–5 days a week).

Discussion: The options for adults suffering from the consequences of severe OBPIs to improve function are limited. In selected patients in whom the neurological deficit is so severe that biologic hand function is unsatisfactory, an elective amputation and subsequent restoration of the hand with mechatronic means may be an option. The follow-up results indicate that this concept can indeed lead to solid hand function and independence in daily activities after amputation, subsequent prosthetic fitting, and rehabilitation.

Prosthetic Embodiment and Body Image Changes in Patients Undergoing Bionic Reconstruction Following Brachial Plexus Injury

Brachial plexus injuries with multiple-root involvement lead to severe and long-lasting impairments in the functionality and appearance of the affected upper extremity. In cases, where biologic reconstruction of hand and arm function is not possible, bionic reconstruction may be considered as a viable clinical option. Bionic reconstruction, through a careful combination of surgical augmentation, amputation, and prosthetic substitution of the functionless hand, has been shown to achieve substantial improvements in function and quality of life. However, it is known that long-term distortions in the body image are present in patients with severe nerve injury as well as in prosthetic users regardless of the level of function. To date, the body image of patients who voluntarily opted for elective amputation and prosthetic reconstruction has not been investigated. Moreover, the degree of embodiment of the prosthesis in these patients is unknown. We have conducted a longitudinal study evaluating changes of body image using the patient-reported Body Image Questionnaire 20 (BIQ-20) and a structured questionnaire about prosthetic embodiment. Six patients have been included. At follow up 2.5–5 years after intervention, a majority of patients reported better BIQ-20 scores including a less negative body evaluation (5 out of 6 patients) and higher vital body dynamics (4 out of 6 patients). Moreover, patients described a strong to moderate prosthesis embodiment. Interestingly, whether patients reported performing bimanual tasks together with the prosthetic hand or not, did not influence their perception of the prosthesis as a body part. In general, this group of patients undergoing prosthetic substitution after brachial plexus injury shows noticeable inter-individual differences. This indicates that the replacement of human anatomy with technology is not a straight-forward process perceived in the same way by everyone opting for it.

Brachial Plexus Injuries - Review of the Anatomy and the Treatment Options

Brachial plexus injuries are still challenging for every surgeon taking part in treating patients with BPI. Injuries of the brachial plexus can be divided into injuries of the upper trunk, extended upper trunk, injuries of the lower trunk and swinging hand where all of the roots are involved in this type of the injury. Brachial plexus can be divided in five anatomical sections from its roots to its terminal branches: roots, trunks, division, cords and terminal branches. Brachial plexus ends up as five terminal branches, responsible for upper limb innervation, musculocutaneous, median nerve, axillary nerve, radial and ulnar nerve. According to the findings from the preoperative investigation combined with clinically found functional deficit, the type of BPI will be confirmed and that is going to determine which surgical procedure, from variety of them (neurolysis, nerve graft, neurotization, arthrodesis, tendon transfer, free muscle transfer, bionic reconstruction) is appropriate for treating the patient.

Bionic Upper Limb Reconstruction: A Valuable Alternative in Global Brachial Plexus Avulsion Injuries-A Case Series

Global brachial plexopathies including multiple nerve root avulsions may result in complete upper limb paralysis despite surgical treatment. Bionic reconstruction, which includes the elective amputation of the functionless hand and its replacement with a mechatronic device, has been described for the transradial level. Here, we present for the first time that patients with global brachial plexus avulsion injuries and lack of biological shoulder and elbow function benefit from above-elbow amputation and prosthetic rehabilitation. Between 2012 and 2017, forty-five patients with global brachial plexus injuries approached our centre, of which nineteen (42.2%) were treated with bionic reconstruction. While fourteen patients were amputated at the transradial level, the entire upper limb was replaced with a prosthetic arm in a total of five patients. Global upper extremity function before and after bionic arm substitution was assessed using two objective hand function tests, the action research arm test (ARAT), and the Southampton hand assessment procedure (SHAP). Other outcome measures included the DASH questionnaire, VAS to assess deafferentation pain and the SF-36 health survey to evaluate changes in quality of life. Using a hybrid prosthetic arm mean ARAT scores improved from 0.6 ± 1.3 to 11.0 ± 6.7 (p = 0.042) and mean SHAP scores increased from 4.0 ± 3.7 to 13.8 ± 9.2 (p = 0.058). After prosthetic arm replacement mean DASH scores improved from 52.5 ± 9.4 to 31.2 ± 9.8 (p = 0.003). Deafferentation pain decreased from mean VAS 8.5 ± 1.0 to 6.7 ± 2.1 (p = 0.055), while the physical and mental component summary scale as part of the SF-36 health survey improved from 32.9 ± 6.4 to 40.4 ± 9.4 (p = 0.058) and 43.6 ± 8.9 to 57.3 ± 5.5 (p = 0.021), respectively. Bionic reconstruction can restore simple but robust arm and hand function in longstanding brachial plexus patients with lack of treatment alternatives.

The lived experience following free functioning muscle transfer for management of pan-brachial plexus injury: reflections from a long-term follow-up study

BACKGROUND

Traumatic, pan-brachial plexus injuries result in major functional disability. Surgical advancements, such as free-functioning muscle transfers, are restoring physical capacity that was not achieved 3-4 decades ago. Despite reconstructive procedures, brachial plexus injury patients report chronic pain, changes in work circumstances, concerns about their appearance, increased reliance on others, and difficulty completing daily activities. This suggests that recovery needs to be considered to better deliver post-injury health services.

OBJECTIVES

Investigate the lived-experience of patients following free-functioning muscle transfers for management of traumatic, pan-brachial plexus injuries.Better understand issues during recovery and implications for rehabilitation with this population.

METHODS

A phenomenological, qualitative design was employed that involved 5 participants who underwent surgery between 2007 and 2015. In-depth, semi-structured interviews were conducted and data were analyzed using interpretative phenomenological analysis.

RESULTS

Three interrelated themes were generated from the data. The first theme 'Experience of health care systems' captures the participants' reflections of their post-injury experience and health care received. The second 'Psychosocial considerations' consists of emotional responses, relationship disturbance, and coming to terms with the permanence of their changed arm. The last theme, 'Creating a new self-identity', relates to the participants experience of adjustment to their new circumstances.

CONCLUSIONS

The findings of this study demonstrate that comprehensive medical coverage and access to expert brachial plexus injury health providers support patients following injury. However, recovery also requires the need for the patient to adjust and establish a new self-concept. Health care providers can assist patients by establishing positive therapeutic relationships, as well as, reducing the number of care providers by providing a continuity of care from the same health professionals.IMPLICATIONS FOR REHABILITATIONIndividuals with pan-brachial plexus injuries felt it was beneficial to work with health care providers with extensive brachial plexus injury knowledge.Stable, long-term relationships with health providers during rehabilitation were reported as beneficial to recovery.Greater consideration of the process of adjustment and creating a new self-identity following pan-brachial plexus injury needs to be considered during rehabilitation.