Toe walking idiopathic toe walkers, a family link has been observed. Idiopathic toe walking can be described as bilateral toe walking with no orthopedic or neurological cause past the age of two. In this condition, children are able to voluntarily walk with the normal heel-toe pattern, but prefer to walk with the toe-toe pattern. In order for it to be considered idiopathic, the child's medical history should be clear of any neurological, orthopedic, or neuro-psychiatric conditions including other gait abnormalities. Two classifications of idiopathic toe walking have been established. The Alvarez's classification identifies the severity of the dysfunction based upon kinematics and
1987 (What the Fuck Is Going On?) whole collection of records, sampling tons of stuff and putting it all together, and it ... was a real rush of excitement, when we were doing it... When we put that record out, we knew what we were doing was illegal, but we thought it was gonna be such an underground record, nobody would ever hear about it. So the first thing that shocked us is that British rock papers gave a big review. "1987" is built around samples of other artists' work, "to the point where the presence of original material becomes questionable". The album is raw and unpolished,