Medium Term Survivorship of Cementless THA Performed Using the Bone Preservation Tri-Lock Femoral Stem

Inclusion Criteria: * Patient signed an IRB, study specific informed patient consent * Patient is a male or non-pregnant female age 21 years or older at the time of study device implantation * Patient has primary diagnosis of non-inflammatory degenerative joint disease. * Patient is a candidate for primary cementless total hip replacement * Patient is willing and able to comply with postoperative scheduled clinical and radiographic evaluations and rehabilitation. Exclusion Criteria: * Patient has a Body Mass Index (BMI) \> 40 Kg/m2 * Patient has an active or suspected infection at the time of device implantation * Patient is immunologically suppressed. * Patient requires revision surgery of a previously implanted total hip replacement * Patient has a known sensitivity to device materials