This paper investigates several equiyalent propositions of minimal curve surface by means of the euler equation of calculus of variations .

Fortunately, the impact of log statements on performance is minimal or nonexistent for most cases, and because the logging tools are easy to use, the learning curve is very small.

Our decision to use a minimally invasive approach in THA was influenced by the demand for minimal invasion in our surgical setup without prolongation of the learning curve and lesser muscle trauma.