Accolade® TMZF® Hip Stem Outcomes Study

Time frame: 2 years

The linear wear rate of the polyethylene acetabular insert is measured radiographically and reported at 5 years.

Time frame: 5 years

Population: Participants with available data: 97 hips were evaluated for wear rate at 5 years.

The change in HHS is reported by comparing the mean preoperative, 2 and 5 year postoperative scores. Scores can range from 0 to 100 with 0 being the worst and 100 being the best score. A score of 80-100 is considered good-excellent and a score of less than or equal to 79 is considered fair-poor. 90-100 = excellent, 80-89 = good, 70-79 = fair, 0-69 = poor.

Time frame: Preoperative, 2 and 5 years

Population: Participants with available data: A total of 195 hips had a preoperative score, 174 had a 2 year score, and 117 had a 5 year score.

The change in LEAS is reported by comparing the mean preoperative, 2 and 5 year postoperative scores.The LEAS is completed by the participant to assess activity level. Activity levels were ordered in terms of intensity from 1 to 18, with 18 indicating the highest activity level. The mean preoperative, 2 and 5 year scores are reported to assess improvement.

Time frame: Preoperative, 2 and 5 years

Population: Participants with available data: A total of 231 hips had a preoperative score, 181 had a 2 year, and 129 had a 5 year score.

The change in SF-12 is reported by comparing the mean preoperative, 2 and 5 year postoperative scores.The SF-12 Health Survey is a 12-item patient completed questionnaire to measure general health and well-being. It includes a physical and mental status component score; each ranging from 0-100. Low values represent a poor health state and high values represent a good health state.

Time frame: Preoperative, 2 and 5 years

Population: Participants with available data: A total of 217 hips had preoperative scores, 175 had 2 year and 121 had 5 year scores.

The PEQ is a study sponsor generated outcomes form. It is a one page questionnaire completed by the participant to assess lifestyle recovery post-surgery. Preoperatively, participants are asked to identify 3 of 12 different expectations that they most want to achieve after hip surgery. At 6 months,1 year and 2 years post-surgery participants evaluated the 3 expectations they identified and assessed their overall satisfaction and percent achievement. EXPECTATIONS KEY: Participate in recreational activities (dancing,traveling,gardening) Exercise or participate in sports Independently perform household chores/daily routine Easily change position,sit to stand/stand to sit Remove need for cane crutch or walker Use stairs normally step by step Ability to sleep through night Maintain social activites,caring for someone,playing with children Use public transportation or drive Maintain psychological well-being Maintain sexual activity Maintain employment

Time frame: 6 months, 1 year, 2 years

Population: Participants with available data: A total of 206 hips had 6 month data; a total of 203 hips had 1 year data; a total of 178 hips had 2 year data. Participants select 3 expectations and assess percent achievement (100%,75%,50%,25%,or 0%) at 6 mos, 1 yr and 2 yrs.

The PEQ is a study sponsor generated outcomes form. It is a one page questionnaire completed by the participant to assess lifestyle recovery post-surgery. Preoperatively, participants are asked to identify 3 of 12 different expectations that they most want to achieve after hip surgery. At 6 months,1 year and 2 years post-surgery participants evaluated the 3 expectations they identified and assessed their overall satisfaction and percent achievement. EXPECTATIONS KEY: Participate in recreational activities (dancing,traveling,gardening) Exercise or participate in sports Independently perform household chores/daily routine Easily change position,sit to stand/stand to sit Remove need for cane crutch or walker Use stairs normally step by step Ability to sleep through night Maintain social activites,caring for someone,playing with children Use public transportation or drive Maintain psychological well-being Maintain sexual activity Maintain employment

Time frame: 6 months, 1 year and 2 years

Population: Participants with available data: A total of 206 hips had 6 month data; a total of 203 hips had 1 year data; a total of 178 hips had 2 year data. Percentage of participants who were satisfied with the result is reported for each expectation at these intervals.

Aseptic loosening is defined as a continuous radiolucency that surrounds the entire femoral stem porous coating-bone interface and that measures greater than 2 mm in thickness, and 5 mm or more of stem subsidence. Continuous radiolucency must be present in Zones 1, 2, 6 and 7 of the AP radiographic view and/or present in Zones 8, 9, 13 and 14 of the M/L radiographic view.

Time frame: 5 years

Population: Participants with available data: 111 hips in 106 participants had a radiographic evaluation at 5 years.

The percentage (%) of hips with revision or removal of any total hip replacement component (acetabular cup, femoral stem or femoral head) is reported at the 2 and 5 year postoperative intervals.

Time frame: 2 and 5 years

Population: Participants with available data: The revision/removal rate of any total hip replacement component at 2 years is reported for 182 hips/176 participants. The revision/removal rate of any component at 5 years is reported for 141 hips/136 participants.

DXA is a bone densitometry scan that measures bone mineral density and assigns a T-score. This score shows the amount of bone a patient has compared with a young adult of the same gender with peak bone mass. A score above -1 is considered normal. A score between -1 and -2.5 is classified as osteopenia (low bone mass). A score below -2.5 is defined as osteoporosis.

Time frame: 5 years

Population: Participants with available data: 107 hips had DXA scan T-scores at 5 years.