Myoelectric Prostheses in the Management of Poland’s Syndrome

1994 ◽  
Vol 19 (5) ◽  
pp. 659-661 ◽  
Author(s):  
D. DATTA ◽  
J. E. KINGSTON
Keyword(s):  
Upper Limb ◽  
Pectoralis Major ◽  
Poland’S Syndrome ◽  
Myoelectric Prosthesis ◽  
Myoelectric Prostheses ◽  
Published Report ◽  
Poland's Syndrome ◽  
Limb Deficiency

Two cases of Poland’s syndrome are reported in whom myoelectric prostheses have been used. The rare congenital sporadic disorder of Poland’s syndrome characterized by absence of pectoralis major and varying degrees of ipsilateral upper limb deficiency has been reported by various authors (Rasjad and Sutiaksa, 1991, Gausewitz et al, 1984; David, 1982; Ireland et al, 1976). Management of the upper limb deficiency depends on the degree of functional and cosmetic disability. We report two cases of Poland’s syndrome where myoelectric prostheses have been successfully used. We have been unable to find any published report of the use of a myoelectric prosthesis in Poland’s syndrome.

Clinical results of an investigation of paediatric upper limb myoelectric prosthesis fitting at the Quebec rehabilitation institute

2001 ◽  
Vol 25 (2) ◽  
pp. 119-131 ◽  
Author(s):  
F. Routhier ◽  
C. Vincent ◽  
M-J. Morissette ◽  
L. Desaulniers
Keyword(s):  
Upper Limb ◽  
Dropout Rate ◽  
Clinical Results ◽  
User Evaluation ◽  
Rehabilitation Centre ◽  
Myoelectric Prosthesis ◽  
Myoelectric Prostheses ◽  
Prosthesis Fitting ◽  
Children And Parents

This study was designed to investigate the satisfaction level of young users of myoelectric prostheses who received an upper limb myoelectric prosthesis, to assess their dropout rate and to identify which factors influence the use or non-use of the upper limb myoelectric prosthesis in the eastern part of Quebec (Canada). The users were fitted between 1990 and 1999 at the Quebec Rehabilitation Institute, a major rehabilitation centre located in the province of Quebec. This rehabilitation centre provides cutting-edge expertise not only for the eastern part of Quebec, but also across the entire province, because it is one of only two highly specialised centres serving all of Quebec.A literature review was completed to compile the results obtained in other rehabilitation centres and to identify factors influencing the use or non-use of paediatric upper limb myoelectric prostheses. The Quebec User Evaluation of Satisfaction with Assistive Technology (QUEST) was used in order to assess the degree to which the children were satisfied with their prostheses.Eighteen (18) children were fitted and trained to use an upper limb myoelectric prosthesis. A total of 10 children and parents agreed to participate. Some 80% of participants said that they were satisfied with their prostheses. A dropout rate of 53% for the overall group (participants and non-participants) seems high compared with that of other studies. Recommendations linked to factors identified in the literature are made. The authors conclude that a multidisciplinary team and structured training and follow-up can improve the clinical results pertaining to all the factors proposed in the literature.

Breast and Pectoralis Muscle Hypoplasia

1996 ◽  
Vol 37 (3P2) ◽  
pp. 759-762 ◽  
Author(s):  
J. M. Perez Aznar ◽  
J. Urbano ◽  
E. Garcia Laborda ◽  
P. Quevedo Moreno ◽  
L. Ferrer Vergara
Keyword(s):  
Upper Extremity ◽  
Male Patient ◽  
Clinical Manifestation ◽  
Pectoralis Major Muscle ◽  
Pectoralis Major ◽  
Breast Size ◽  
Pectoralis Muscle ◽  
Clinical Expression ◽  
Poland’S Syndrome ◽  
Poland's Syndrome

Purpose: Poland's syndrome is a congenital and unilateral aplasia of the pectoralis major muscle (PMM), with other anomalies of the ipsilateral upper extremity. We present 6 cases in which the only clinical expression was asymmetry of the breasts associated with partial absence of the PMM. Material and Methods: We reviewed 95000 mammograms (obtained 1985–1995) to find patients with asymmetrical breast size. Where the asymmetry could not be ascribed to any other cause, the patients were recalled for an examination of the PMM which was conducted at rest and with active contraction of the muscle. Results: Unilateral volume reduction of the PMM was found in 5 women of whom 2 were studied with MR. A 6th case was a fortuitous finding in a male patient. Conclusion: Mild forms of Poland's syndrome are more frequent than severe forms, and may go undiagnosed. Hypoplasia of one breast or a horizontal anterior axillary fold may be the sole clinical manifestation of this syndrome.

scholarly journals Myoelectric Prosthesis Users and Non-Disabled Individuals Wearing A Simulated Prosthesis Exhibit Similar Compensatory Movement Strategies

2020 ◽  
Author(s):  
Heather E. Williams ◽  
Craig S. Chapman ◽  
Patrick M. Pilarski ◽  
Albert H. Vette ◽  
Jacqueline S. Hebert
Keyword(s):  
Upper Limb ◽  
Performance Metrics ◽  
Upper Body ◽  
Kinematic Data ◽  
Myoelectric Prosthesis ◽  
Myoelectric Prostheses ◽  
Compensatory Movement ◽  
Upper Limb Prosthesis ◽  
Movement Strategies ◽  
Shoulder Motion

Abstract Background: Research studies on upper limb prosthesis function often rely on the use of simulated myoelectric prostheses (attached to and operated by individuals with intact limbs), primarily to increase participant sample size. However, it is not known if these devices elicit the same movement strategies as myoelectric prostheses (operated by individuals with amputation). The objective of this study was to compare compensatory movement strategies, measured by hand and upper body kinematics, of twelve non-disabled individuals wearing a simulated prosthesis to those of three individuals with transradial amputation using their custom-fitted myoelectric devices. Methods: Motion capture was used to obtain kinematic data as participants performed a standardized functional task. Performance metrics, end effector movements and angular kinematics were analyzed. Results: Results show that participants using a simulated or actual myoelectric prosthesis had similar differences in phase durations, hand velocities, hand trajectories, movement units, grip aperture plateaus, and trunk and shoulder motion when compared to normative behaviour. Conclusions: This study suggests that the use of a simulated device in upper limb research offers a reasonable approximation of compensatory movement strategies employed by a novice to mid-skilled transradial myoelectric prosthesis user.

A variant of Poland’s syndrome: axillary web containing rudimentary pectoralis major muscle

2014 ◽  
Vol 38 (2) ◽  
pp. 161-162 ◽  
Author(s):  
Burak Ersen ◽  
Ramazan Kahveci ◽  
Mehmet can Saki ◽  
Ayse Sahin ◽  
Orhan Tunali ◽  
...  
Keyword(s):  
Pectoralis Major Muscle ◽  
Pectoralis Major ◽  
Poland’S Syndrome ◽  
Poland's Syndrome

scholarly journals Myoelectric prosthesis users and non-disabled individuals wearing a simulated prosthesis exhibit similar compensatory movement strategies

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Heather E. Williams ◽  
Craig S. Chapman ◽  
Patrick M. Pilarski ◽  
Albert H. Vette ◽  
Jacqueline S. Hebert
Keyword(s):  
Task Performance ◽  
Upper Limb ◽  
Performance Metrics ◽  
Upper Body ◽  
Myoelectric Prosthesis ◽  
Myoelectric Prostheses ◽  
Upper Limb Prosthesis ◽  
Movement Strategies ◽  
Upper Limb Movements ◽  
Participant Group

Abstract Background Research studies on upper limb prosthesis function often rely on the use of simulated myoelectric prostheses (attached to and operated by individuals with intact limbs), primarily to increase participant sample size. However, it is not known if these devices elicit the same movement strategies as myoelectric prostheses (operated by individuals with amputation). The objective of this study was to address the question of whether non-disabled individuals using simulated prostheses employ the same compensatory movements (measured by hand and upper body kinematics) as individuals who use actual myoelectric prostheses. Methods The upper limb movements of two participant groups were investigated: (1) twelve non-disabled individuals wearing a simulated prosthesis, and (2) three individuals with transradial amputation using their custom-fitted myoelectric devices. Motion capture was used for data collection while participants performed a standardized functional task. Performance metrics, hand movements, and upper body angular kinematics were calculated. For each participant group, these measures were compared to those from a normative baseline dataset. Each deviation from normative movement behaviour, by either participant group, indicated that compensatory movements were used during task performance. Results Results show that participants using either a simulated or actual myoelectric prosthesis exhibited similar deviations from normative behaviour in phase durations, hand velocities, hand trajectories, number of movement units, grip aperture plateaus, and trunk and shoulder ranges of motion. Conclusions This study suggests that the use of a simulated prosthetic device in upper limb research offers a reasonable approximation of compensatory movements employed by a low- to moderately-skilled transradial myoelectric prosthesis user.

Computed Tomography of the Pectoralis Muscles in Poland's Syndrome.

HAND ◽  
1983 ◽  
Vol os-15 (1) ◽  
pp. 35-41 ◽  
Author(s):  
T. Suzuki ◽  
H. Takazawa ◽  
T. Koshino Yokohama
Keyword(s):  
Computed Tomography ◽  
Chest Wall ◽  
Pectoralis Major ◽  
Ct Scans ◽  
Poland’S Syndrome ◽  
Pectoralis Minor ◽  
Poland's Syndrome ◽  
Pectoralis Muscles

Computed tomography (CT) can demonstrate disorders of the chest wall muscles clearly. CT scans of the thorax were carried out in seven patients with Poland's Syndrome. All patients with Poland's Syndrome had the clavicular portion of the pectoralis major, but were lacking the sternocostal portion of the pectoralis major. The pectoralis minor was absent in four of seven patients.

Poland's Syndrome

1972 ◽  
Vol 11 (2) ◽  
pp. 98-102 ◽  
Author(s):  
J.W. Mace ◽  
J.M. Kaplan ◽  
J.E. Schanberger ◽  
R.W. Gotlin
Keyword(s):  
Upper Extremity ◽  
Pectoralis Major ◽  
Poland’S Syndrome ◽  
Poland's Syndrome

Seven cases of Poland's syndrome (absence of the sternal por tion of the pectoralis major with ipsilateral upper extremity anomalies) are compared with 48 previously reported cases.

scholarly journals A survey of overuse problems in patients with acquired or congenital upper limb deficiency

2015 ◽  
Vol 40 (4) ◽  
pp. 497-502 ◽  
Author(s):  
Helena Burger ◽  
Gaj Vidmar
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Shoulder Pain ◽  
Upper Limb ◽  
Carpal Tunnel ◽  
Contributing Factors ◽  
Cross Sectional ◽  
Multicentric Study ◽  
Myoelectric Prosthesis ◽  
Tunnel Syndrome ◽  
Limb Deficiency

Background:Little is known about secondary impairments and overuse problems in patient with acquired or congenital upper limb deficiency.Objectives:Our aim was to estimate the frequency of overuse problems in persons after unilateral upper limb deficiency and identify the factors relevant for development of these problems.Study design:Cross-sectional study conducted at the University Rehabilitation Institute in Ljubljana.Methods:In total, 65 persons after unilateral upper limb deficiency who had visited our subspecialist outpatient clinic during the 2011–2013 period (excluding those with other possible medical causes of overuse-type problems) were interviewed about the frequency, duration and severity of neck, elbow and shoulder pain and the presence of carpal tunnel syndrome and filled in the Orthotics and Prosthetics User Survey-Upper Extremity Functional Status questionnaire.Results:The most frequent problem was carpal tunnel syndrome, followed by shoulder pain, neck pain and elbow pain. No statistically significant association of deficiency level, cause of deficiency, time since deficiency, extent of daily prosthesis use or type of prosthesis with frequency or severity of pain or number of problems was found. The presence of carpal tunnel syndrome decreased from wearing no prosthesis through aesthetic and body-powered to myoelectric prosthesis ( p = 0.014).Conclusion:Factors contributing to overuse problems after upper limb deficiency are not straightforward, so a large multicentric study is warranted.Clinical relevancePersons with acquired or congenital upper limb deficiency are under a heightened risk of developing overuse problems but the contributing factors are not clear, so regular individual follow-up is required.

scholarly journals Differential experiences of embodiment between body-powered and myoelectric prosthesis users

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Susannah M. Engdahl ◽  
Sean K. Meehan ◽  
Deanna H. Gates
Keyword(s):  
Upper Limb ◽  
Functional Recovery ◽  
Body Schema ◽  
Direct Consequence ◽  
The Body ◽  
Prosthesis Design ◽  
Patient Specific ◽  
Myoelectric Prosthesis ◽  
Myoelectric Prostheses ◽  
Length Estimation

Abstract Prosthesis embodiment, the perception of a prosthesis as part of one’s body, may be an important component of functional recovery for individuals with upper limb absence. This work determined whether embodiment differs between body-powered and myoelectric prosthesis users. In a sample of nine individuals with transradial limb absence, embodiment was quantified using a survey regarding prosthesis ownership and agency. The extent to which the prosthesis affected the body schema, the representation of the body’s dimensions, was assessed using limb length estimation. Because body-powered prostheses offer proprioceptive feedback that myoelectric prostheses do not, it was hypothesized that both measures would reveal stronger embodiment of body-powered prostheses. However, our results did not show differences across the two prosthesis designs. Instead, body schema was influenced by several patient-specific characteristics, including the cause of limb absence (acquired or congenital) and hours of daily prosthesis wear. These results indicate that regular prosthesis wear and embodiment are connected, regardless of the actual prosthesis design. Identifying whether embodiment is a direct consequence of regular prosthesis use would offer insight on how individuals with limb absence could modify their behavior to more fully embody their prosthesis.

The Development of a Myoelectric Training Tool for Above-Elbow Amputees

2012 ◽  
Vol 6 (1) ◽  
pp. 5-15 ◽  
Author(s):  
Michael R Dawson ◽  
Farbod Fahimi ◽  
Jason P Carey
Keyword(s):  
Degrees Of Freedom ◽  
Learning Task ◽  
Robotic Arm ◽  
Signal Acquisition ◽  
Myoelectric Prosthesis ◽  
Training Tool ◽  
Myoelectric Prostheses ◽  
Training Systems ◽  
Targeted Muscle Reinnervation

The objective of above-elbow myoelectric prostheses is to reestablish the functionality of missing limbs and increase the quality of life of amputees. By using electromyography (EMG) electrodes attached to the surface of the skin, amputees are able to control motors in myoelectric prostheses by voluntarily contracting the muscles of their residual limb. This work describes the development of an inexpensive myoelectric training tool (MTT) designed to help upper limb amputees learn how to use myoelectric technology in advance of receiving their actual myoelectric prosthesis. The training tool consists of a physical and simulated robotic arm, signal acquisition hardware, controller software, and a graphical user interface. The MTT improves over earlier training systems by allowing a targeted muscle reinnervation (TMR) patient to control up to two degrees of freedom simultaneously. The training tool has also been designed to function as a research prototype for novel myoelectric controllers. A preliminary experiment was performed in order to evaluate the effectiveness of the MTT as a learning tool and to identify any issues with the system. Five able-bodied participants performed a motor-learning task using the EMG controlled robotic arm with the goal of moving five balls from one box to another as quickly as possible. The results indicate that the subjects improved their skill in myoelectric control over the course of the trials. A usability survey was administered to the subjects after their trials. Results from the survey showed that the shoulder degree of freedom was the most difficult to control.

Sign in / Sign up

Export Citation Format

Share Document