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
The Humans (video game) sound effects or a music track, unlike the PC and Amiga versions, which utilize both simultaneously. Following the success of the original release, an expansion pack containing 80 additional levels was released in 1992 under the name "Humans 2: The Jurassic Levels" in the UK and "The Humans: Insult to Injury" in the United States. in 1993, the two games were combined and released for both Amiga and DOS under the name "Humans 1 and 2" and included English, French, German, Italian and Spanish versions. The DOS was distributed on a CD-ROM and was improved in several ways, including adding