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Translational Neuroscience and Clinics  2015, Vol. 1 Issue (2): 102-109    doi: 10.18679/CN11-6030/R.2015.013
Reviews     
Why does a little mean a lot when you have nothing? A brief review of cell therapy strategies for spinal cord injury
Dajue Wang
The National Spinal Injuries Centre, Stoke Mandeville Hospital, Aylesbury HP199QD, UK
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Abstract  Without an understanding of functional musculoskeletal system recovery, the translation of knowledge concerning neurological recovery from laboratory discoveries to bedside applications will be incomplete. Because improvements in neurological function after cell transplantation are minor and can be easily ignored, this article draws attention to the minimal improvements required to allow a spinal cord injury patient or person to live a relatively independent life. These minimal improvements include (1) the key muscle power required for trunk stability; (2) the key muscle power required to allow a paraplegic to walk; and (3) the key muscle power required for hand usefulness or functionality. The system of muscle power grading promoted by the British Medical Research Council (MRC) is more sensitive and delicate than the ASIA Standards, as the latter only accept the full range of movement of a joint. The MRC system seems to be preferable to the ASIA Standards in clinical trials of cell transplantation, wherein minute improvements in function might result in large differences in the quality of life. The threshold of function is a grade 3 power level. Even if all relevant muscles fail to achieve a power higher than grade 3, the patient can be minimally functional and hence relatively independent. These relevant muscles include the latissimus dorsi, hip flexors, hip abductors, shoulder abductors and flexors, elbow flexors and extensors, and wrist extensors. These muscles are innervated by the C5-7 spinal cord segments except the latissimus dorsi, for which innervation extends to C8.

Key wordsspinal cord injury      cell therapy      paralysis      motor recovery     
Received: 06 November 2015      Published: 15 December 2015
Corresponding Authors: Dajue Wang, E-mail:dajue.wang@btopenworld.com     E-mail: dajue.wang@btopenworld.com
Cite this article:

Dajue Wang. Why does a little mean a lot when you have nothing? A brief review of cell therapy strategies for spinal cord injury. Translational Neuroscience and Clinics, 2015, 1(2): 102-109.

URL:

http://tnc.tsinghuajournals.com/10.18679/CN11-6030/R.2015.013     OR     http://tnc.tsinghuajournals.com/Y2015/V1/I2/102

 Figure 1 Complete translation sequence from neurological impairment to functional improvement in a spinal cord injury victim. Without improvements in musculoskeletal system performance (thick‐framed box), knowledge of this translation is incomplete.
 Figure 2 Anatomy of the latissimus dorsi, which bridges the upper limb and pelvis. A bilateral contraction of sufficient power can stabilize the spine (Courtesy of https://www.google.co.uk/search?q= latissimus+dorsi&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjbaa 94qnJAhWCCSwKHaZ6CC4Q_AUIBygB&biw=1024&bih=637#img rc=P8vidWZp7llUjM%3A).
 Figure 3a–3b Center of gravity of the human body (The web source cannot be relocated).
 Figure 4a–4g The gait cycle (The web source cannot be relocated).
 Figure 5 Normal posture during the stance phase with one foot on the ground. The other leg is in the swing phase (dorsal view) (Courtesy of https://www.google.co.uk/search?q=parade,+china&biw=1024&bih=637&tbm=isch&source=lnms&sa=X&ved=0ahUKEwj8ldPfiarJAhXMt RQKHSxqCtsQ_AUICCgD#tbm=isch&q=shoulder+abductors&imgrc=E0XlGglsZNSa5M%3).
 Figure 6 Walking is possible with a straight leg or straight legs (Courtesy of http://www.google.co.uk/imgres?imgurl=http://www. chinadaily.com.cn/opinion/images/attachement/jpg/site1/20150826/ b083fe955fbe1747452d0c.jpg&imgrefurl=http://www.chinadaily.com .cn/opinion/2015‐08/26/content_21706965.htm&h=367&w=600&tbnid= zVLyscQCAq_4TM:&docid=ZLFq‐S_4XHF8wM&ei=ZeFUVo6KLoT ZU4KzkNAB&tbm=isch&ved=0ahUKEwjO0KviiqrJAhWE7BQKHY IZBBo4rAIQMwhUKFEwUQ).
 Figure 7 Reaching an object in front via contraction of the main shoulder abductor and flexor (deltoid muscle) (The web source cannot be relocated).
 Figure 8 Elbow extension by the triceps increases the reach toward an object at a comfortable horizontal level (Courtesy of https://www.google.co.uk/search?q=parade,+china&biw=1024&bih= 637&tbm=isch&source=lnms&sa=X&ved=0ahUKEwj8ldPfiarJAhXMt RQKHSxqCtsQ_AUICCgD#tbm=isch&q=elbow+extension&imgrc= 7O5LDB5wg2I78M%3A).
 Figure 9 Wrist extension (a) increases the grip, whereas wrist flexion (b) releases it (The web source cannot be relocated).
 Figure 10 Neutral position of the forearm. In this position, the bottle opening cannot reach the user’s mouth for drinking. The forearm must be rotated towards the user’s mouth (Courtesy of http://www.QsAQIKA#tbm=isch&tbs=rimg%3ACX3PschgK2sWIjg TPhZYuk1hInv4mqsbg6FLCrbVX5eN‐FLTgoam4EtlngoUqPHtBIH WVw3SZxJPMrMlNZBCuUPtuSoSCRM‐Fli6TWEiETMj5iow_1H6 UKhIJe_1iaqxuDoUsRgWQBqwmXlvwqEgkKttVfl434UhHJKKQt pykDKioSCdOChqbgS2WeEWU48sTAcYN2KhIJChSo8e0EgdYRC PjfpBMXp68qEglXDdJnEk8ysxEMbJkB9tQAxyoSCSU1kEK5Q‐25E Sw5IXRSh5NR&q=holding a bottle&imgrc=fc‐xyGAraxbGOM%3A).
 Table 1 A simplified scoring system for walking
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