Final answer:
Unsteady gait, appendicular ataxia in LE only, and normal eye movement can be indicative of ataxia, a movement disorder that affects coordination, balance, and muscle control.
Step-by-step explanation:
Unsteady gait, appendicular ataxia in lower extremities (LE) only, and normal eye movement can be indicative of a movement disorder known as ataxia. Ataxia refers to a loss of coordination in voluntary movements and can be caused by damage to the cerebellum. Symptoms may include muscle weakness, difficulty moving, problems with coordination, and difficulty maintaining balance.
When testing gait and balance, subtests such as walking normally, tandem gait, walking on heels, or walking on toes can be performed to assess for abnormalities. The lurching broad-based gait described in the question is a common characteristic of ataxic gait.
In conclusion, the symptoms and description mentioned in the question point towards ataxia, a movement disorder that affects coordination, balance, and muscle control.