We examined the cup inclination and anteversion in MIS-THA, according to three approaches, in 303 patients treated over a two-year period from 2007 in our hospital. Among the joints treated, the Mini-one approach was used for 109, the OCM approach for 162, and the Hardinge approach for 32. All operations were performed with the patient in the decubitus position. The cup anteversion was measured by Lewinnek's method.
In the OCM approach, cup anteversion was intentionally increased, probably because of pelvic tilting during surgery. The OCM approach has the potential to minimize the degree of surgical invasion, pain, recovery time and hip dislocations. However, attention is necessary with regard to cup placement.
