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Harding ER, Kanner CH, Pasternak A, Glanzman AM, Dunaway Young S, Rao AK, McDermott MP, Zolkipli-Cunningham Z, Day JW, Finkel RS, Darras BT, De Vivo DC, Montes J. Beyond Contractures in Spinal Muscular Atrophy: Identifying Lower-Limb Joint Hypermobility. J Clin Med 2024; 13:2634. [PMID: 38731167 PMCID: PMC11084694 DOI: 10.3390/jcm13092634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 04/23/2024] [Accepted: 04/25/2024] [Indexed: 05/13/2024] Open
Abstract
Background: The natural history of spinal muscular atrophy (SMA) is well understood, with progressive muscle weakness resulting in declines in function. The development of contractures is common and negatively impacts function. Clinically, joint hypermobility (JH) is observed but is poorly described, and its relationship with function is unknown. Methods: Lower-limb ROM (range of motion) assessments of extension and flexion at the hip, knee, and ankle were performed. ROMs exceeding the published norms were included in the analysis. The functional assessments performed included the six-minute walk test (6 MWT) and the Hammersmith Functional Motor Scale-Expanded (HFMSE). Results: Of the 143 participants, 86% (n = 123) had at least one ROM measure that was hypermobile, and 22% (n = 32) had three or more. The HFMSE scores were inversely correlated with hip extension JH (r = -0.60, p = 0.21; n = 6) and positively correlated with knee flexion JH (r = 0.24, p = 0.02, n = 89). There was a moderate, inverse relationship between the 6 MWT distance and ankle plantar flexion JH (r = -0.73, p = 0.002; n = 15). Conclusions: JH was identified in nearly all participants in at least one joint in this study. Hip extension, knee flexion and ankle plantar flexion JH was associated with function. A further understanding of the trajectory of lower-limb joint ROM is needed to improve future rehabilitation strategies.
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Affiliation(s)
- Elizabeth R. Harding
- Department of Rehabilitation and Regenerative Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA (A.K.R.); (J.M.)
| | - Cara H. Kanner
- Department of Rehabilitation and Regenerative Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA (A.K.R.); (J.M.)
| | - Amy Pasternak
- Department of Neurology, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115, USA; (A.P.); (B.T.D.)
- Department of Physical and Occupational Therapy Services, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Allan M. Glanzman
- Department of Physical Therapy, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA;
| | - Sally Dunaway Young
- Department of Neurology and Clinical Neurosciences, Stanford University, Palo Alto, CA 94304, USA; (S.D.Y.); (J.W.D.)
| | - Ashwini K. Rao
- Department of Rehabilitation and Regenerative Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA (A.K.R.); (J.M.)
| | - Michael P. McDermott
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, NY 14642, USA;
| | | | - John W. Day
- Department of Neurology and Clinical Neurosciences, Stanford University, Palo Alto, CA 94304, USA; (S.D.Y.); (J.W.D.)
| | - Richard S. Finkel
- Center for Experimental Neurotherapeutics, Department of Pediatric Medicine, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA;
| | - Basil T. Darras
- Department of Neurology, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115, USA; (A.P.); (B.T.D.)
| | - Darryl C. De Vivo
- Department of Neurology, Columbia University Irving Medical Center, New York, NY 10032, USA;
| | - Jacqueline Montes
- Department of Rehabilitation and Regenerative Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA (A.K.R.); (J.M.)
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Decostre V, De Antonio M, Servais L, Hogrel JY. Relationship Between Hand Strength and Function in Duchenne Muscular Dystrophy and Spinal Muscular Atrophy: Implications for Clinical Trials. J Neuromuscul Dis 2024; 11:777-790. [PMID: 38788084 DOI: 10.3233/jnd-230182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2024]
Abstract
Background Measurement of muscle strength and motor function is recommended in clinical trials of neuromuscular diseases, but the loss of hand strength at which motor function is impacted is not documented. Objectives To establish the relationship between hand strength and function, and to determine the strength threshold that differentiates normal and abnormal hand function in individuals with Duchenne Muscular Dystrophy (DMD) or Spinal Muscular Atrophy (SMA). Methods Maximal handgrip and key pinch strength were measured with the MyoGrip and MyoPinch dynamometers, respectively. Hand function was assessed using the MoviPlate, the Motor Function Measure items for distal upper limb (MFM-D3-UL) and the Cochin Hand Function Scale (CHFS). Results Data from 168 participants (91 DMD and 77 SMA, age 6-31 years) were analyzed. Relationships between strength and function were significant (P < 0.001). Hand function was generally preserved when strength was above the strength threshold determined by Receiver-Operating Characteristic (ROC) analysis: For MFM-D3-UL, the calculated handgrip strength thresholds were 41 and 13% of the predicted strength for a healthy subject (% pred) and the key pinch strength thresholds were 42 and 26% pred for DMD and SMA, respectively. For the MoviPlate, handgrip strength thresholds were 11 and 8% pred and key pinch strength thresholds were 21 and 11% pred for DMD and SMA, respectively. For participants with sub-threshold strength, hand function scores decreased with decreasing strength. At equal % pred strength, individuals with SMA had better functional scores than those with DMD. Conclusions Hand function is strength-dependent for most motor tasks. It declines only when strength falls below a disease-specific threshold. Therefore, therapies capable of maintaining strength above this threshold should preserve hand function.
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Affiliation(s)
| | - Marie De Antonio
- Institut de Myologie, GH Pitié-Salpêtrière, Paris, France
- Present address: Direction de la Recherche Clinique et de l'Innovation, Centre hospitalier universitaire de Clermont-Ferrand, Clermont-Ferrand, France
| | - Laurent Servais
- Institut de Myologie, GH Pitié-Salpêtrière, Paris, France
- Present address: Department of Paediatrics, MDUK Oxford Neuromuscular Centre & NIHR Oxford Biomedical Research Centre, University of Oxford, Oxford, United Kingdom
- Present address: Department of Pediatrics, Division of Child Neurology, Centre de Référence des Maladies Neuromusculaires, University Hospital Liège and University of Liège, Liège, Belgium
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Ros LA, Sleutjes BT, Stikvoort García DJ, Goedee HS, Asselman FL, van den Berg LH, van der Pol WL, Wadman RI. Feasibility and tolerability of multimodal peripheral electrophysiological techniques in a cohort of patients with spinal muscular atrophy. Clin Neurophysiol Pract 2023; 8:123-131. [PMID: 37554725 PMCID: PMC10404501 DOI: 10.1016/j.cnp.2023.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 05/27/2023] [Accepted: 06/17/2023] [Indexed: 08/10/2023] Open
Abstract
OBJECTIVE Electrophysiological techniques are emerging as an aid in identifying prognostic or therapeutic biomarkers in patients with spinal muscular atrophy (SMA), but electrophysiological assessments may be burdensome for patients. We, therefore, assessed feasibility and tolerability of multimodal peripheral non-invasive electrophysiological techniques in a cohort of patients with SMA. METHODS We conducted a single center, longitudinal cohort study investigating the feasibility and tolerability of applying multimodal electrophysiological techniques to the median nerve unilaterally. Techniques consisted of the compound muscle action potential scan, motor nerve excitability tests, repetitive nerve stimulation and sensory nerve action potential. We assessed tolerability using the numeric rating scale (NRS), ranging from 0 (no pain) to 10 (worst possible pain), and defined the protocol to be tolerable if the NRS score ≤ 3. The protocol was considered feasible if it could be performed according to test and quality standards. RESULTS We included 71 patients with SMA types 1-4 (median 39 years; range 13-67) and 63 patients at follow-up. The protocol was feasible in 98% of patients and was well-tolerated in up to 90% of patients. Median NRS score was 2 (range 0-6 at baseline and range 0-4 at follow-up (p < 0.01)). None of the patients declined follow-up assessment. CONCLUSIONS Multimodal, peripheral, non-invasive, electrophysiological techniques applied to the median nerve are feasible and well-tolerated in adolescents and adults with SMA types 1-4. SIGNIFICANCE Our study supports the use of non-invasive multimodal electrophysiological assessments in adolescents and adults with SMA types 1-4.
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Affiliation(s)
- Leandra A.A. Ros
- Department of Neurology, University Medical Center Utrecht, UMC Utrecht Brain Center, Utrecht University, Utrecht, The Netherlands
| | - Boudewijn T.H.M. Sleutjes
- Department of Neurology, University Medical Center Utrecht, UMC Utrecht Brain Center, Utrecht University, Utrecht, The Netherlands
| | - Diederik J.L. Stikvoort García
- Department of Neurology, University Medical Center Utrecht, UMC Utrecht Brain Center, Utrecht University, Utrecht, The Netherlands
| | - H. Stephan Goedee
- Department of Neurology, University Medical Center Utrecht, UMC Utrecht Brain Center, Utrecht University, Utrecht, The Netherlands
| | - Fay-Lynn Asselman
- Department of Neurology, University Medical Center Utrecht, UMC Utrecht Brain Center, Utrecht University, Utrecht, The Netherlands
| | - Leonard H. van den Berg
- Department of Neurology, University Medical Center Utrecht, UMC Utrecht Brain Center, Utrecht University, Utrecht, The Netherlands
| | | | - Renske I. Wadman
- Corresponding author at: Department of Neurology, University Medical Center Utrecht, UMC Utrecht Brain Center, Heidelberglaan 100, 3508 GA, Utrecht, The Netherlands.
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Prospective Analysis of Functional and Structural Changes in Patients with Spinal Muscular Atrophy-A Pilot Study. Biomedicines 2022; 10:biomedicines10123187. [PMID: 36551943 PMCID: PMC9776007 DOI: 10.3390/biomedicines10123187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/24/2022] [Accepted: 12/06/2022] [Indexed: 12/13/2022] Open
Abstract
Spinal muscular atrophy (SMA) is a rare, autosomal recessive neuromuscular disease. Recent years have seen a significant development of therapeutic options for SMA patients. With the development of treatment methods, it has become necessary to adapt a physiotherapeutic approach to the evolving clinical picture of SMA patients. We presented an analysis of 40 SMA patients undergoing pharmacological treatment, examined twice in an average interval of 5 months. Twelve patients (non-sitters) were evaluated using CHOP-INTEND, while 28 (sitters) were tested using the Hammersmith scale. The research protocol consisted of measurements of upper and lower limb ranges of motion, and four tests for early detection of musculoskeletal changes. Both non-sitters and sitters patients showed motor improvement between the first and second examinations. Favorable changes in range of motion parameters were noted in most children, except for hip extension (HE) range, which deteriorated. An association was also observed between scale scores and the presence of contractures in the hip and knee joints depending on the group studied. Our findings showed that the presence of contractures at the hip and knee joint negatively affected functional improvement as measured by the scale scores.
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Hip Pain in Patients With Spinal Muscular Atrophy: Prevalence, Intensity, Interference, and Factors Associated With Moderate to Severe Pain. J Pediatr Orthop 2022; 42:273-279. [PMID: 35153285 DOI: 10.1097/bpo.0000000000002091] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND A subset of patients with spinal muscular atrophy (SMA) develop hip pain. We analyzed (1) the characteristics of hip pain in patients with SMA (prevalence, intensity, interference with activities, and responsiveness to treatment) and (2) factors (patient, clinical, and radiographic) associated with moderate to severe pain. METHODS We performed a retrospective record review and telephone survey of 104 patients with SMA (77% response rate; 44% female; mean age, 22±13 y) who presented for treatment between 2010 and 2020. Patient, clinical, and radiographic characteristics (when available) were recorded. Patients with current or past hip pain were asked about pain characteristics. Pain intensity and interference were assessed with the Brief Pain Inventory, modified for SMA (scale, 0 to 10 with 0 indicating no pain/interference). We used univariate analysis and ordered logistic regression to determine associations between patient factors and hip pain (α=0.05). RESULTS Hip pain occurred in 60/104 patients (58%), with 15 (14%) indicating moderate to severe pain. Compared with patients with normal body mass index values, patients who were obese had 5.4 times the odds [95% confidence interval (CI), 1.3-23] of moderate to severe pain. Hip contractures [adjusted odds ratio (aOR), 3.2; 95% CI, 1.2-8.8] and dislocations (aOR, 2.9; 95% CI, 1.1-7.9) were associated with greater odds of pain compared with hips without these presentations. Surgical correction for scoliosis (aOR, 2.6; 95% CI, 1.1-6.5) was also associated with greater odds of moderate to severe pain. Femoral head migration percentage was the only radiographic parameter associated with pain. Mean modified Brief Pain Inventory pain intensity was 2.1±2.3. Prolonged sitting, sleep, and transfers (eg, bed to wheelchair) were the activities most affected by pain. CONCLUSIONS Hip pain was moderate to severe in 14% of patients with SMA. Obesity, hip contractures, surgical correction of scoliosis, and hip dislocations were independently associated with pain. Although mean pain intensity was low, hip pain interfered with daily activities, including prolonged sitting, sleep, and transfers. LEVEL OF EVIDENCE Level III.
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Stępień A, Mazurkiewicz Ł, Maślanko K, Rekowski W, Jędrzejowska M. Cervical rotation, chest deformity and pelvic obliquity in patients with spinal muscular atrophy. BMC Musculoskelet Disord 2020; 21:726. [PMID: 33160358 PMCID: PMC7648994 DOI: 10.1186/s12891-020-03710-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 10/12/2020] [Indexed: 01/02/2023] Open
Abstract
Background Musculoskeletal disorders are often observed in patients with spinal muscular atrophy (SMA). The aim of the study was to assess passive ranges of rotation in the cervical spine, chest deformity and pelvic obliquity in SMA patients, and to compare these results to the norms obtained in the group of healthy individuals. The second aim was to review these measurements and Cobb angle values for correlations in SMA patients. Methods The study included 74 patients with SMA and 89 healthy individuals aged 2 to 18 years. Cervical Rotation (CR), Supine Angle of Trunk Rotation (SATR) and Pelvic Obliquity (PO) tests were carried out. Results Cervical rotation ranges were significantly higher in the control group than in SMA patients (p < 0.05). Differences between cervical rotation ranges to the left and to the right were significantly larger in SMA I and SMA II groups than in healthy individuals (p = 0.000). Chest asymmetry and pelvic obliquity were bigger in SMA groups than in the control (p < 0.05). Significant correlations between cervical rotation measurements, chest deformity, pelvic obliquity and Cobb angle were found in SMA individuals, depending on the type. Conclusions The results of the study suggest that CR, SATR and PO tests may assist in the assessment of SMA patients in addition to the radiographic evaluation of the spine. Biomechanical relationships between disorders located in various skeletal structures should be taken into account in the treatment of SMA patients. Special attention should be given to assessing postural parameters in non- sitters and sitters. Treatment of patients with SMA and associated musculoskeletal disorders requires a multi-specialist approach.
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Affiliation(s)
- Agnieszka Stępień
- Faculty of Rehabilitation, Józef Piłsudski University of Physical Education, Marymoncka 34, 00-968, Warsaw, Poland.
| | - Łucja Mazurkiewicz
- 2nd Department of Neurology, Institute of Psychiatry and Neurology, Warsaw, Poland
| | | | - Witold Rekowski
- Faculty of Rehabilitation, Józef Piłsudski University of Physical Education, Marymoncka 34, 00-968, Warsaw, Poland
| | - Maria Jędrzejowska
- Rare Diseases Research Platform, Mossakowski Medical Research Centre, Polish Academy of Sciences, Pawińskiego 5, 02-106, Warsaw, Poland
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Nikolaou S, Cramer AA, Hu L, Goh Q, Millay DP, Cornwall R. Proteasome inhibition preserves longitudinal growth of denervated muscle and prevents neonatal neuromuscular contractures. JCI Insight 2019; 4:128454. [PMID: 31661460 DOI: 10.1172/jci.insight.128454] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 10/16/2019] [Indexed: 12/14/2022] Open
Abstract
Muscle contractures are a prominent and disabling feature of many neuromuscular disorders, including the 2 most common forms of childhood neurologic dysfunction: neonatal brachial plexus injury (NBPI) and cerebral palsy. There are currently no treatment strategies to directly alter the contracture pathology, as the pathogenesis of these contractures is unknown. We previously showed in a mouse model of NBPI that contractures result from impaired longitudinal muscle growth. Current presumed explanations for growth impairment in contractures focus on the dysregulation of muscle stem cells, which differentiate and fuse to existing myofibers during growth, as this process has classically been thought to control muscle growth during the neonatal period. Here, we demonstrate in a mouse model of NBPI that denervation does not prevent myonuclear accretion and that reduction in myonuclear number has no effect on functional muscle length or contracture development, providing definitive evidence that altered myonuclear accretion is not a driver of neuromuscular contractures. In contrast, we observed elevated levels of protein degradation in NBPI muscle, and we demonstrate that contractures can be pharmacologically prevented with the proteasome inhibitor bortezomib. These studies provide what we believe is the first strategy to prevent neuromuscular contractures by correcting the underlying deficit in longitudinal muscle growth.
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Affiliation(s)
| | - Alyssa Aw Cramer
- Division of Molecular Cardiovascular Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | | | | | - Douglas P Millay
- Division of Molecular Cardiovascular Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Roger Cornwall
- Division of Orthopaedic Surgery, and.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.,Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Orthopaedic Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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Stępień A, Jędrzejowska M, Guzek K, Rekowski W, Stępowska J. Reliability of four tests to assess body posture and the range of selected movements in individuals with spinal muscular atrophy. BMC Musculoskelet Disord 2019; 20:54. [PMID: 30732590 PMCID: PMC6367749 DOI: 10.1186/s12891-018-2389-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 12/19/2018] [Indexed: 01/26/2023] Open
Abstract
Background The majority of individuals with spinal muscular atrophy (SMA) experience progressive skeletal deformities which may affect the quality of life and mobility. To date, no studies have evaluated the reliability of tests assessing body posture and joint mobility in SMA patients. The purpose of this study was to assess the reliability of Cervical Rotation test (CR), Supine Angle of Trunk Rotation test (SATR), Hip Extension test (HE) and Pelvic Obliquity test (PO) developed to evaluate the musculoskeletal system in SMA individuals. Methods Thirty individuals (12 girls and 18 boys) aged 4–15 with SMA type II (n = 24) and III (n = 6) confirmed by genetic examinations were qualified for the study. The participants were examined twice by three physiotherapists on the same day. The examination included four tests, i.e. CR, SATR, HE and PO tests aimed at assessing ranges of rotation in the cervical spine, chest deformities, ranges of hip extension and pelvis position while sitting. Statistical calculations were made with the use of statistical software IBM SPSS Statistics version 20. Reliability was assessed using the Intraclass Correlation Coefficient (ICC). Results Intraobserver reliability was excellent for CR (ICC range 0.839–0.911), SATR (ICC range 0.918–0.939 - the upper part of the sternum; ICC range 0.951–0.975 - the lower part of the sternum), HE (ICC range 0.988–0,991) and PO (ICC range 0.896–0.935) tests. The interobserver ICC reached the excellent values in CR (ICC range 0.912–0.920), SATR (ICC = 0.888 - the upper part of the sternum, ICC = 0.951 - the lower part of the sternum), HE (ICC range 0.922–0.923) and PO (ICC = 0.928) tests. Conclusions CR, SATR, HE and PO tests are reliable and may be used for examining individuals with SMA. The application of these tests provides a possibility to detect early changes in the musculoskeletal system in children and adolescents and to assess the effectiveness of the implemented pharmacotherapy and rehabilitation.
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Affiliation(s)
- Agnieszka Stępień
- Faculty of Rehabilitation, Józef Piłsudski University of Physical Education, Marymoncka 34, 00-968, Warsaw, Poland.
| | - Maria Jędrzejowska
- Mossakowski Medical Research Centre, Polish Academy of Sciences, Neuromuscular Unit, Pawińskiego 5, 02-106, Warsaw, Poland
| | - Katarzyna Guzek
- Faculty of Rehabilitation, Józef Piłsudski University of Physical Education, Marymoncka 34, 00-968, Warsaw, Poland
| | - Witold Rekowski
- Faculty of Rehabilitation, Józef Piłsudski University of Physical Education, Marymoncka 34, 00-968, Warsaw, Poland
| | - Jolanta Stępowska
- Faculty of Rehabilitation, Józef Piłsudski University of Physical Education, Marymoncka 34, 00-968, Warsaw, Poland
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Quantitative Evaluation of Lower Extremity Joint Contractures in Spinal Muscular Atrophy: Implications for Motor Function. Pediatr Phys Ther 2018; 30:209-215. [PMID: 29924070 DOI: 10.1097/pep.0000000000000515] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
PURPOSE To quantitatively describe passive lower extremity range of motion in participants with spinal muscular atrophy (SMA) types 2 and 3, and to establish preliminary thresholds to identify individuals at risk for performing poorly on disease-specific motor function outcome measures. METHODS Eighty participants with SMA types 2 and 3, enrolled in an international multicenter natural history study, were evaluated with lower extremity range of motion testing and the Hammersmith Functional Motor Scale-Expanded. RESULTS A hip extension joint angle of -7.5° or less for SMA type 2 and 0° or less for SMA type 3 identified diminished motor ability with good sensitivity. For knee extension, a joint angle of -9.0° or less for SMA type 2 or 0° or less for SMA type 3 was similarly sensitive. CONCLUSIONS Minimal hip and knee joint contractures were associated with diminished motor ability. Clinical trial designs should consider the effect of contractures on motor function.
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Mercuri E, Finkel RS, Muntoni F, Wirth B, Montes J, Main M, Mazzone ES, Vitale M, Snyder B, Quijano-Roy S, Bertini E, Davis RH, Meyer OH, Simonds AK, Schroth MK, Graham RJ, Kirschner J, Iannaccone ST, Crawford TO, Woods S, Qian Y, Sejersen T. Diagnosis and management of spinal muscular atrophy: Part 1: Recommendations for diagnosis, rehabilitation, orthopedic and nutritional care. Neuromuscul Disord 2017; 28:103-115. [PMID: 29290580 DOI: 10.1016/j.nmd.2017.11.005] [Citation(s) in RCA: 518] [Impact Index Per Article: 74.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Revised: 11/06/2017] [Accepted: 11/13/2017] [Indexed: 01/02/2023]
Abstract
Spinal muscular atrophy (SMA) is a severe neuromuscular disorder due to a defect in the survival motor neuron 1 (SMN1) gene. Its incidence is approximately 1 in 11,000 live births. In 2007, an International Conference on the Standard of Care for SMA published a consensus statement on SMA standard of care that has been widely used throughout the world. Here we report a two-part update of the topics covered in the previous recommendations. In part 1 we present the methods used to achieve these recommendations, and an update on diagnosis, rehabilitation, orthopedic and spinal management; and nutritional, swallowing and gastrointestinal management. Pulmonary management, acute care, other organ involvement, ethical issues, medications, and the impact of new treatments for SMA are discussed in part 2.
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Affiliation(s)
- Eugenio Mercuri
- Paediatric Neurology Unit, Catholic University, Rome, Italy; Centro Clinico Nemo, Policlinico Gemelli, Rome, Italy.
| | - Richard S Finkel
- Nemours Children's Hospital, University of Central Florida College of Medicine, Orlando, FL, USA
| | - Francesco Muntoni
- Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health & Great Ormond Street Hospital, London, UK
| | - Brunhilde Wirth
- Institute of Human Genetics, Center for Molecular Medicine, Center for Rare Diseases and Institute for Genetics, University of Cologne, Germany
| | - Jacqueline Montes
- Departments of Rehabilitation and Regenerative Medicine and Neurology, Columbia University Medical Center, New York, NY, USA
| | - Marion Main
- Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health & Great Ormond Street Hospital, London, UK
| | - Elena S Mazzone
- Paediatric Neurology Unit, Catholic University, Rome, Italy; Centro Clinico Nemo, Policlinico Gemelli, Rome, Italy
| | - Michael Vitale
- Department of Orthopaedic Surgery, Columbia University Medical Center, New York, NY, USA
| | - Brian Snyder
- Department of Orthopaedic Surgery, Children's Hospital, Harvard Medical School, Boston, USA
| | - Susana Quijano-Roy
- Assistance Publique des Hôpitaux de Paris (AP-HP), Unit of Neuromuscular Disorders, Department of Pediatric Intensive Care, Neurology and Rehabilitation, Hôpital Raymond Poincaré, Garches, France; Hôpitaux Universitaires Paris-Ile-de-France Ouest, INSERM U 1179, University of Versailles Saint-Quentin-en-Yvelines (UVSQ), Paris, France
| | - Enrico Bertini
- Unit of Neuromuscular & Neurodegenerative Disorders, Dept of Neurosciences & Neurorehabilitation, Bambino Gesù Children's Research Hospital, Rome, Italy
| | | | - Oscar H Meyer
- Division of Pulmonology, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Anita K Simonds
- NIHR Respiratory Biomedical Research Unit, Royal Brompton & Harefield NHS Foundation Trust, London, UK
| | - Mary K Schroth
- Division of Pediatric Pulmonary, Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, American Family Children's Hospital, Madison, WI, USA
| | - Robert J Graham
- Division of Critical Care, Dept of Anesthesiology, Perioperative & Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Janbernd Kirschner
- Department of Neuropediatrics and Muscle Disorders, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Susan T Iannaccone
- Departments of Pediatrics and Neurology and Neurotherapeutics, Division of Pediatric Neurology, University of Texas Southwestern Medical Center and Children's Medical Center Dallas, USA
| | - Thomas O Crawford
- Department of Neurology, Johns Hopkins University, Baltimore, MD, USA
| | - Simon Woods
- Policy Ethics and Life Sciences Research Centre, Newcastle University, Newcastle, UK
| | | | - Thomas Sejersen
- Department of Women's and Children's Health, Paediatric Neurology, Karolinska Institute, Stockholm, Sweden
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New Approaches to Exciting Exergame-Experiences for People with Motor Function Impairments. SENSORS 2017; 17:s17020354. [PMID: 28208682 PMCID: PMC5336067 DOI: 10.3390/s17020354] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 01/18/2017] [Accepted: 02/09/2017] [Indexed: 12/02/2022]
Abstract
The work presented here suggests new ways to tackle exergames for physical rehabilitation and to improve the players’ immersion and involvement. The primary (but not exclusive) purpose is to increase the motivation of children and adolescents with severe physical impairments, for doing their required exercises while playing. The proposed gaming environment is based on the Kinect sensor and the Blender Game Engine. A middleware has been implemented that efficiently transmits the data from the sensor to the game. Inside the game, different newly proposed mechanisms have been developed to distinguish pure exercise-gestures from other movements used to control the game (e.g., opening a menu). The main contribution is the amplification of weak movements, which allows the physically impaired to have similar gaming experiences as the average population. To test the feasibility of the proposed methods, four mini-games were implemented and tested by a group of 11 volunteers with different disabilities, most of them bound to a wheelchair. Their performance has also been compared to that of a healthy control group. Results are generally positive and motivating, although there is much to do to improve the functionalities. There is a major demand for applications that help to include disabled people in society and to improve their life conditions. This work will contribute towards providing them with more fun during exercise.
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Chen X, Siebourg-Polster J, Wolf D, Czech C, Bonati U, Fischer D, Khwaja O, Strahm M. Feasibility of Using Microsoft Kinect to Assess Upper Limb Movement in Type III Spinal Muscular Atrophy Patients. PLoS One 2017; 12:e0170472. [PMID: 28122039 PMCID: PMC5266257 DOI: 10.1371/journal.pone.0170472] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 01/05/2017] [Indexed: 11/19/2022] Open
Abstract
Although functional rating scales are being used increasingly as primary outcome measures in spinal muscular atrophy (SMA), sensitive and objective assessment of early-stage disease progression and drug efficacy remains challenging. We have developed a game based on the Microsoft Kinect sensor, specifically designed to measure active upper limb movement. An explorative study was conducted to determine the feasibility of this new tool in 18 ambulant SMA type III patients and 19 age- and gender-matched healthy controls. Upper limb movement was analysed elaborately through derived features such as elbow flexion and extension angles, arm lifting angle, velocity and acceleration. No significant differences were found in the active range of motion between ambulant SMA type III patients and controls. Hand velocity was found to be different but further validation is necessary. This study presents an important step in the process of designing and handling digital biomarkers as complementary outcome measures for clinical trials.
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Affiliation(s)
- Xing Chen
- Data Science, Roche Pharmaceutical Research and Early Development Informatics, Roche Innovation Center Basel, F. Hoffmann-La Roche, Ltd., Basel, Switzerland
- * E-mail:
| | - Juliane Siebourg-Polster
- Translational Technologies and Bioinformatics, Pharmaceutical Sciences, Roche Pharmaceutical Research and Early Development, Roche Innovation Center Basel, F. Hoffmann-La Roche, Ltd., Basel, Switzerland
| | - Detlef Wolf
- Data Science, Roche Pharmaceutical Research and Early Development Informatics, Roche Innovation Center Basel, F. Hoffmann-La Roche, Ltd., Basel, Switzerland
| | - Christian Czech
- Biomarker Experimental Medicine, Neuroscience, Roche Pharmaceutical Research and Early Development, Roche Innovation Center Basel, F. Hoffmann-La Roche, Ltd., Basel, Switzerland
| | - Ulrike Bonati
- Division of Neuropediatrics, University of Basel Children’s Hospital, Basel, Switzerland
- Department of Neurology, University of Basel Hospital, Basel, Switzerland
| | - Dirk Fischer
- Division of Neuropediatrics, University of Basel Children’s Hospital, Basel, Switzerland
- Department of Neurology, University of Basel Hospital, Basel, Switzerland
| | - Omar Khwaja
- Translational Medicine, Neuroscience and Rare Diseases, Roche Pharmaceutical Research and Early Development, Roche Innovation Center Basel, F. Hoffmann-La Roche, Ltd., Basel, Switzerland
| | - Martin Strahm
- Data Science, Roche Pharmaceutical Research and Early Development Informatics, Roche Innovation Center Basel, F. Hoffmann-La Roche, Ltd., Basel, Switzerland
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Abstract
Spinal muscular atrophy is an autosomal-recessive disorder characterized by degeneration of motor neurons in the spinal cord and caused by mutations in the survival motor neuron 1 gene, SMN1. The severity of SMA is variable. The SMN2 gene produces a fraction of the SMN messenger RNA (mRNA) transcript produced by the SMN1 gene. There is an inverse correlation between SMN2 gene copy number and clinical severity. Clinical management focuses on multidisciplinary care. Preclinical models of SMA have led to an explosion of SMA clinical trials that hold great promise of effective therapy in the future.
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Arnold WD, Kassar D, Kissel JT. Spinal muscular atrophy: diagnosis and management in a new therapeutic era. Muscle Nerve 2014; 51:157-67. [PMID: 25346245 DOI: 10.1002/mus.24497] [Citation(s) in RCA: 203] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/20/2014] [Indexed: 12/13/2022]
Abstract
Spinal muscular atrophy (SMA) describes a group of disorders associated with spinal motor neuron loss. In this review we provide an update regarding the most common form of SMA, proximal or 5q-SMA, and discuss the contemporary approach to diagnosis and treatment. Electromyography and muscle biopsy features of denervation were once the basis for diagnosis, but molecular testing for homozygous deletion or mutation of the SMN1 gene allows efficient and specific diagnosis. In combination with loss of SMN1, patients retain variable numbers of copies of a second similar gene, SMN2, which produces reduced levels of the survival motor neuron (SMN) protein that are insufficient for normal motor neuron function. Despite the fact that understanding of how ubiquitous reduction of SMN protein leads to motor neuron loss remains incomplete, several promising therapeutics are now being tested in early-phase clinical trials.
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Affiliation(s)
- W David Arnold
- Division of Neuromuscular Disorders, Department of Neurology, Wexner Medical Center, The Ohio State University, 395 West 12th Avenue, Columbus, Ohio, 43210, USA; Department of Physical Medicine and Rehabilitation, Wexner Medical Center, The Ohio State University, Columbus, Ohio, USA
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Haaker G, Fujak A. Proximal spinal muscular atrophy: current orthopedic perspective. APPLICATION OF CLINICAL GENETICS 2013; 6:113-20. [PMID: 24399883 PMCID: PMC3876556 DOI: 10.2147/tacg.s53615] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Spinal muscular atrophy (SMA) is a hereditary neuromuscular disease of lower motor neurons that is caused by a defective “survival motor neuron” (SMN) protein that is mainly associated with proximal progressive muscle weakness and atrophy. Although SMA involves a wide range of disease severity and a high mortality and morbidity rate, recent advances in multidisciplinary supportive care have enhanced quality of life and life expectancy. Active research for possible treatment options has become possible since the disease-causing gene defect was identified in 1995. Nevertheless, a causal therapy is not available at present, and therapeutic management of SMA remains challenging; the prolonged survival is increasing, especially orthopedic, respiratory and nutritive problems. This review focuses on orthopedic management of the disease, with discussion of key aspects that include scoliosis, muscular contractures, hip joint disorders, fractures, technical devices, and a comparative approach of conservative and surgical treatment. Also emphasized are associated complications including respiratory involvement, perioperative care and anesthesia, nutrition problems, and rehabilitation. The SMA disease course can be greatly improved with adequate therapy with established orthopedic procedures in a multidisciplinary therapeutic approach.
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Affiliation(s)
- Gerrit Haaker
- Department of Orthopaedic Surgery, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Albert Fujak
- Department of Orthopaedic Surgery, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
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Abstract
Spinal muscular atrophy (SMA) is an autosomal recessive disorder caused by a homozygous deletion in the SMN1 gene and is manifested by loss of the anterior horn cells of the spinal cord. Classifications of the disorder are based on age of onset and the patient's level of function. Scoliosis and hip subluxation or dislocation are two musculoskeletal manifestations associated with SMA. Severity of scoliosis correlates with age at presentation. Bracing has been unsuccessful in halting curve progression and may interfere with respiratory effort. Early onset scoliosis associated with SMA has been successfully treated with growing rod constructs, and posterior spinal fusion can be used in older children. Hip subluxations and dislocations are best treated nonsurgically if the patient reports no pain because a high rate of recurrent dislocation has been reported with surgical intervention.
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de Oliveira CM, Araújo APDQC. Self-reported quality of life has no correlation with functional status in children and adolescents with spinal muscular atrophy. Eur J Paediatr Neurol 2011; 15:36-9. [PMID: 20800519 DOI: 10.1016/j.ejpn.2010.07.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2010] [Revised: 06/19/2010] [Accepted: 07/05/2010] [Indexed: 10/19/2022]
Abstract
BACKGROUND Spinal muscular atrophy is one of the most common neuromuscular disorders in children. Associated with progressive muscular weakness, it may assume a chronic course. In chronic disorders it is of utmost importance to determine the quality of life level. OBJECTIVE To determine the level of quality of life in a cohort of SMA children and adolescents, and study its relation to motor ability. METHODS From the children and adolescents with confirmed SMA diagnosis (presence of deletion) followed at a University Hospital, we selected those that were 4 years or older. They were classified as SMA type II or III according to their best motor ability, evaluated according to the modified Hammersmith functional score, and undertook the AUQEI Portuguese version to determine quality of life. This is an Institutional Review Board approved study and consent was given by all those included. RESULTS Thirty-three children and adolescent with a mean age of 10.28 (± 4.71) took part of the study. The fourteen SMA type II had a mean Hammersmith score of 11 (± 9.50) and AUQEI of 55.85 (± 7.16), while the nineteen SMA type III scored 31.10 (± 12.30) and 52.94 (± 4.85). No significant difference was found when quality of life scores was compared among those groups. CONCLUSION On a self-reported scale it seems that regardless the functional status an SMA child and adolescent has a perception of good quality of life.
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Affiliation(s)
- Cristiane M de Oliveira
- The Federal University of Rio de Janeiro, Universidade Federal do Rio de Janeiro (UFRJ), Instituto de Puericultura e Pediatria Martagão Gesteira (IPPMG), Rio de Janeiro, Brazil.
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Trovato M, Kim H, Moberg-Wolff E, Murphy N, Kim CT. Pediatric rehabilitation: 4. Prescribing assistive technology to promote community integration. PM R 2010; 2:S26-30. [PMID: 20359676 DOI: 10.1016/j.pmrj.2010.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2010] [Accepted: 01/04/2010] [Indexed: 11/28/2022]
Abstract
OBJECTIVE This self-directed learning module highlights the equipment and assistive technology needs of children and youth with disabilities. This article specifically focuses on preparing families and patients for equipment transitions that occur over the course of childhood and adolescence including progressing from stroller to wheelchair to powerchair, as well as job training and use of augmentative communication. It is part of the study guide on pediatric rehabilitation in the Self-Directed Physiatric Education Program for practitioners and trainees in physical medicine and rehabilitation and pediatric medicine. The goal of this article is to modify the learner's current practice techniques to ensure that assistive technology is used to promote community integration from early childhood through transition and into adulthood.
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Affiliation(s)
- Melissa Trovato
- Department of PM&R, Johns Hopkins University, School of Medicine, 707 North Broadway, Room 105, Baltimore, MD 21205, USA.
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Rahman T, Sample W, Seliktar R, Scavina MT, Clark AL, Moran K, Alexander MA. Design and testing of a functional arm orthosis in patients with neuromuscular diseases. IEEE Trans Neural Syst Rehabil Eng 2007; 15:244-51. [PMID: 17601194 DOI: 10.1109/tnsre.2007.897026] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The objective of this study was to determine the utility of a passive gravity-balanced arm orthosis, the Wilmington robotic exoskeleton (WREX), for patients with neuromuscular diseases. The WREX, a four-degrees-of-freedom functional orthosis, is energized by rubber bands to eliminate gravity and is attached to the wheelchair. The development and clinical testing of WREX is described in this report. Seventeen patients (14 boys and 3 girls) with muscular disabilities participated in the study. Ages ranged from 4 to 20 years. Criteria for inclusion included a weakened arm, use of a wheelchair, the ability to grasp and release objects, and the ability to provide feedback on device use. Testing consisted of administering the Jebsen test of hand function without WREX and then testing again after approximately two weeks of wearing the WREX orthosis. The timed results of each task within the test then were compared. Specific tasks related to vertical movement required less time to perform with the WREX. A large number of subjects were able to perform the Jebsen tasks with the WREX, where they were unable to perform the task without the WREX. Patients can benefit from WREX because it increases their performance in daily living activities and makes many tasks possible. The range-of-motion in the patients' arms increased considerably, while the time required to complete some of the Jebsen test tasks decreased. Most patients were very receptive to WREX, although a few were ambivalent.
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Affiliation(s)
- Tariq Rahman
- Nemours Biomedical Research, Alfred I. duPont Hospital for Children, Wilmington, DE 19899, USA.
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