1) Disability of walking 2) Inability to walk 
Abasia (from Greek: a-, without and basis, step) is the inability to walk due to impaired muscle coordination. The term covers a spectrum of medical disorders such as: Abasia is frequently accompanied by astasis, an inability to stand, see Astasia-abasia. ...
inability to walk due to lack of muscular coordination
• (n.) Inability to coordinate muscular actions properly in walking.
<neurology> Lack of motor or muscular coordination in walking. ... (27 Sep 1997) ... 
(ә-ba´zhә) inability to walk. adj., aba´sic, abat´ic., adj.
A·ba'si·a noun [ New Latin ; Greek ...- not + ... a step.] (Medicine) Inability to coördinate muscular actions properly in walking. -- 
Type: Term Pronunciation: ă-bā′zē-ă Definitions: 1. Inability to walk. See: gait
Abasia is the inability to walk.
[n] - inability to walk
abasia The inability to walk due to a limitation or absence of muscular coordination; not able to walk.
noun inability to walk
inability to walk due to a limitation or absence of muscular coordination. Cf. astasia.