Functional Movement Retraining After Hip Replacement

15-week rehabilitation / exercise intervention, including visits at the Durham VA medical center, in-home with clinical personnel, and via telephone. The intervention is tailored to participants' post-operative functional status, particularly unilateral balance asymmetries. The exercise program will focus on three areas: lower extremity mobility (ankle, knee and hip), muscle stability (quadriceps and gluteal muscle strength) and functional movement patterns (lower extremity focus). Participants will be instructed to perform their prescribed stretching exercises daily and strengthening exercises three times per week (on non-consecutive days).