Paralysis
The paralysis is a loss of motricity by reduction or loss of the contractility of one or several Muscle S, due to lesions of nervous ways or muscles: if the phenomenon is incomplete, one speaks about paresis . The paralyzes of nervous origin are central or peripheral. Some metabolic diseases of the muscular system can be responsible for paralyzes without nervous lesion nor muscular (Myasthénie).
Importance of the paralysis
The degree of paralysis is dimensioned from 0 to 5:
- 0: no contraction (total paralysis);
- 1: visible contraction not involving any movement;
- 2: contraction allowing the movement in the absence of gravity;
- 3: contraction allowing the movement against gravity;
- 4: contraction allowing the movement against resistance;
- 5: normal muscular force.
Forms of paralysis
; Systematic forms of neurological origin
One distinguishes the paralyzes of central origin, due to a lesion on the level of the Cerveau, cerebral Tronc or Spinal-cord:
-
Hémiplégie, proportional if it touches in a comparable way the unit of a hémicorps, or not proportional;
- Paraplegia;
- quadriplegia (or Tétraplégie);
and paralyzes of peripheral origin, due to the attack of one or more roots, or of one or more Nerve S, for example:
- paralysis of the median nerve (as in the Syndrome of the carpel tunnel).
; Forms of psychodynamic origin
The functional paralyzes affect movements coordinated to carry out a given type of action: for example the Astasie - Abasie (disorder of walk and the station upright, but allowing other movements apart from walk).
Paralyzes of formerly
-
the agitating paralysis indicated the incoordonnés movements of the parkinsonian .
- the general paralysis (PG) corresponded to the tertiary Syphilis.
See too
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