Summary: Researchers have published a structured psychosocial assessment to determine which patients are psychologically suitable for bionic hand reconstruction following amputation.
Source: Medical University of Vienna.
Bionic reconstruction—replacing a non-functional hand with a mechatronic prosthesis—can restore meaningful function and hope after devastating arm injuries. But not every patient is an appropriate candidate. A multidisciplinary team led by surgeon Oskar Aszmann at the Medical University of Vienna has published the Vienna psychosocial assessment, a structured evaluation designed to identify psychological readiness and realistic expectations before elective amputation and prosthetic reconstruction.
Severe accidents can damage the nerves that control the arm and hand. When nerve continuity is not restored within months, the muscles in the hand atrophy and the limb becomes a non-functional, insensate appendage. Bionic reconstruction offers an option for these patients: surgically augmenting the forearm with transplanted muscles that amplify residual nerve signals and then fitting a myoelectric, mechatronic hand. Even after years without natural hand function, selected patients can regain a strong grip and perform everyday tasks with a prosthetic replacement.
Young motorcyclists are a group commonly affected by root avulsion injuries of the brachial plexus. High-energy trauma can pull nerve roots away from the spinal cord, interrupting the brain–spinal cord–nerve pathway so that patients lose both sensation and voluntary movement in the hand. While timely nerve reconstructions can sometimes restore shoulder and elbow function, hand muscles often do not survive prolonged denervation.
The clinical pathway for bionic reconstruction includes elective amputation of the non-functional hand—a significant alteration of bodily integrity and identity. Because the procedure requires extensive rehabilitation and carries physical and psychological consequences, assessing candidates’ mental state and expectations is essential. To address this need, Laura Hruby and Anna Pittermann from Aszmann’s group developed a standardized psychosocial assessment that every prospective recipient undergoes before surgery.
The Vienna assessment combines validated questionnaires with a detailed, two-hour semi-structured interview conducted by an experienced clinical psychologist. The interview explores how well patients have emotionally processed the accident, their current psychosocial situation, motivation for surgery, and their expectations for the prosthetic outcome. Responses are transcribed and scored using a predefined system. Quantitative measures include self-reported mental health and social functioning (SF-36), body image (FKB-20), and deafferentation pain using a visual analogue scale (VAS).
Hruby notes that some patients arrive with sensationalized, “cyborg”-style expectations shaped by media portrayals. The assessment is designed to detect unrealistic beliefs early, identify unresolved psychological issues that could complicate recovery, and determine whether additional psychological support or preparation is needed before proceeding. This screening helps protect patients from choosing a life-changing surgery based on misinformation and ensures better post-operative outcomes.
In addition to describing the assessment procedure, the publication in PLOS ONE presents psychosocial outcome data showing meaningful benefits after bionic reconstruction. The research examined a cohort of patients with complete (global) brachial plexus injuries who had lived for years without functional hands. The authors report improvements in quality of life, mental health measures, body image, and reductions in deafferentation pain following prosthetic replacement.
Source: Verena Müller – Medical University of Vienna
Publisher: Organized by NeuroscienceNews.com.
Image Source: Image adapted from the Medical University of Vienna news release.
Original Research: “The Vienna psychosocial assessment procedure for bionic reconstruction in patients with global brachial plexus injuries” by Laura Antonia Hruby, Anna Pittermann, Agnes Sturma, and Oskar Christian Aszmann in PLOS ONE. Published online January 3, 2018, doi:10.1371/journal.pone.0189592
Medical University of Vienna. “Bionic Reconstruction: Restoration at the Psychological Interface.” NeuroscienceNews. Published January 7, 2018.
Abstract
The Vienna psychosocial assessment procedure for bionic reconstruction in patients with global brachial plexus injuries
Background
Global brachial plexus injuries produce profound sensory and motor loss in the affected arm and hand and often lead to chronic pain, reduced independence, and poor body image. Bionic reconstruction—amputation and prosthetic replacement of a functionless limb—can restore hand function when conventional reconstructive efforts have failed. Careful patient selection and psychological evaluation are critical to achieve optimal outcomes. This paper describes a structured psychosocial assessment for candidates with complete brachial plexopathies and reports associated psychosocial outcome measures.
Methods
Between 2013 and 2017, eight patients with global brachial plexopathies underwent the psychosocial assessment. The process included semi-structured interviews focusing on adjustment after the accident, current psychosocial status, motivation for elective amputation, and expectations for prosthetic function. Interviews were transcribed verbatim and analyzed using a predefined scoring system. Quantitative instruments assessed mental health and social functioning (SF-36), body image (FKB-20), and deafferentation pain (VAS). Psychosocial outcomes were compared for seven patients before and after bionic reconstruction.
Results
Qualitative analysis identified several long-term psychological stressors among patients with complete brachial plexopathies. Most patients (88%) reported substantial functional limitations, and all described persistent, debilitating pain in the insensate hand. After bionic reconstruction, mean physical component summary scores improved from 30.80 ± 5.31 to 37.37 ± 8.41 (p = 0.028). Mental component summary scores rose from 43.19 ± 8.32 to 54.76 ± 6.78 (p = 0.018). Deafferentation pain VAS scores decreased from 7.8 to 5.6 after prosthetic hand replacement (p = 0.018). Measures of negative body evaluation and perceived bodily vitality showed trends toward improvement as well.
Conclusions
Bionic reconstruction can offer renewed function, improved quality of life, and a restored sense of bodily integrity for patients living with complete brachial plexopathies for years. Rigorous psychosocial screening is essential: the Vienna procedure, which includes a semi-structured interview and standardized questionnaires, helps identify unresolved psychological issues that might preclude or delay surgery and guides the provision of appropriate psychological support. Overall, bionic reconstruction is associated with improvements in physical and mental health, body image, and reductions in deafferentation pain.
“The Vienna psychosocial assessment procedure for bionic reconstruction in patients with global brachial plexus injuries” by Laura Antonia Hruby, Anna Pittermann, Agnes Sturma, and Oskar Christian Aszmann in PLOS ONE. Published online January 3, 2018. doi:10.1371/journal.pone.0189592