Trial Outcomes & Findings for ABC/Trident® Ceramic Post Approval Study (NCT NCT00960206)

NCT ID: NCT00960206

Last Updated: 2017-02-03

Results Overview

The number of hips in which the study device was removed and replaced with a new component/s is listed. Complications (adverse events) are listed in the adverse event section.

Recruitment status

COMPLETED

Study phase

NA

Target enrollment

413 participants

Primary outcome timeframe

10 years

Results posted on

2017-02-03

Participant Flow

There were 413/464 participants/hips enrolled. Started, completed and not completed counts are reported by hip.

Participant milestones

Participant milestones
Measure
Trident® System
Hip received the Trident® Acetabular System with a ceramic insert and ceramic femoral head.
ABC System
Hip received the ABC Acetabular System with a ceramic insert and ceramic femoral head.
Control
Hip received the Omnifit Acetabular system with polyethylene insert and metal femoral head.
Overall Study
STARTED
190
185
89
Overall Study
COMPLETED
150
158
77
Overall Study
NOT COMPLETED
40
27
12

Reasons for withdrawal

Reasons for withdrawal
Measure
Trident® System
Hip received the Trident® Acetabular System with a ceramic insert and ceramic femoral head.
ABC System
Hip received the ABC Acetabular System with a ceramic insert and ceramic femoral head.
Control
Hip received the Omnifit Acetabular system with polyethylene insert and metal femoral head.
Overall Study
Death
7
4
1
Overall Study
Unwilling/Unable to return
1
2
0
Overall Study
Lost to Follow-up
8
14
8
Overall Study
Withdrawal by Subject
2
4
0
Overall Study
Revision of study component
2
2
2
Overall Study
Missing 10 year data
20
1
1

Baseline Characteristics

ABC/Trident® Ceramic Post Approval Study

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Trident System
n=190 Participants
Trident Ceramic Insert/Trident AD with PureFix HA Shell
ABC System
n=185 Participants
Howmedica Osteonics Alumina Insert/either PSL Microstructured or Secur Fit HA PSL Shell
Control
n=89 Participants
Howmedica Osteonics Omnifit Series II Cup Inserts/Omnifit PSL Microstructured Shell
Total
n=464 Participants
Total of all reporting groups
Age, Continuous
51.5 years
n=5 Participants
53.9 years
n=7 Participants
54.7 years
n=5 Participants
53.08 years
n=4 Participants
Sex/Gender, Customized
Female
67 hips
n=5 Participants
64 hips
n=7 Participants
35 hips
n=5 Participants
166 hips
n=4 Participants
Sex/Gender, Customized
Male
123 hips
n=5 Participants
121 hips
n=7 Participants
54 hips
n=5 Participants
298 hips
n=4 Participants
Region of Enrollment
United States
190 hips
n=5 Participants
185 hips
n=7 Participants
89 hips
n=5 Participants
464 hips
n=4 Participants

PRIMARY outcome

Timeframe: 10 years

Population: Number of participants analyzed includes all subjects enrolled.

The number of hips in which the study device was removed and replaced with a new component/s is listed. Complications (adverse events) are listed in the adverse event section.

Outcome measures

Outcome measures
Measure
Trident® System
n=190 hips
Hip received the Trident® Acetabular System with a ceramic insert and ceramic femoral head.
ABC System
n=185 hips
Hip received the ABC Acetabular System with a ceramic insert and ceramic femoral head.
Control
n=89 hips
Hip recevied the Omnifit Acetabular system with polyethylene insert and metal femoral head.
Component Revision and Complications
2 hips
2 hips
2 hips

SECONDARY outcome

Timeframe: 3-5 and 10 Years

Population: Participants may have one or both hips replaced. Number of participants and hips analyzed include all enrolled. Number of hips with HHS evaluated at postoperative periods indicated is included in the outcome results posting.

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 less than or equal to 79 is considered fair-poor. 90 - 100 = excellent 80 - 89 = good 70 - 79 = fair 0 - 69 = poor

Outcome measures

Outcome measures
Measure
Trident® System
n=190 Hips
Hip received the Trident® Acetabular System with a ceramic insert and ceramic femoral head.
ABC System
n=185 Hips
Hip received the ABC Acetabular System with a ceramic insert and ceramic femoral head.
Control
n=89 Hips
Hip recevied the Omnifit Acetabular system with polyethylene insert and metal femoral head.
Harris Hip Score
3 yr hips with good-excellent score (80-100)
160 hips
171 hips
81 hips
Harris Hip Score
3 yr hips with a fair-poor score (0-79)
2 hips
2 hips
2 hips
Harris Hip Score
4 yr hips with a good-excellent score (80-100)
148 hips
164 hips
77 hips
Harris Hip Score
4 yr hips with a fair-poor score (0-79)
6 hips
2 hips
2 hips
Harris Hip Score
5 yr hips with a good-excellent score (80-100)
126 hips
158 hips
76 hips
Harris Hip Score
5 yr hips with a fair-poor score (0-79)
6 hips
4 hips
2 hips
Harris Hip Score
10 yr hips with a good-excellent score (80-100)
67 hips
115 hips
56 hips
Harris Hip Score
10 yr hips with a fair-poor score (0-79)
0 hips
4 hips
2 hips

SECONDARY outcome

Timeframe: 3-5 and 10 years

Population: Participants may have one or both hips replaced. Number of participants/hips analyzed includes all enrolled. Number of hips demonstrating radiographic failure assessment at postoperative periods indicated is included in the outcome results posting. Number of hips available for evaluation is indicated in the results heading by postoperative period.

Failure is defined as progressive femoral radiolucency (RLL) \> or = 2mm around entire stem, progressive subsidence \> or = 5mm, progressive acetabular radiolucency (RLL) \> or = 2 mm around entire cup, or cup migration \> or = 3mm.

Outcome measures

Outcome measures
Measure
Trident® System
n=190 Hips
Hip received the Trident® Acetabular System with a ceramic insert and ceramic femoral head.
ABC System
n=185 Hips
Hip received the ABC Acetabular System with a ceramic insert and ceramic femoral head.
Control
n=89 Hips
Hip recevied the Omnifit Acetabular system with polyethylene insert and metal femoral head.
Radiographic Evaluation
3 yr failure (160 Trident®/174 ABC/82 Control)
0 hips
0 hips
0 hips
Radiographic Evaluation
4 yr failure (153 Trident®/162 ABC/79 Control)
0 hips
0 hips
0 hips
Radiographic Evaluation
5 yr failure (128 Trident®/158 ABC/74 Control)
0 hips
0 hips
0 hips
Radiographic Evaluation
10 yr failure (60 Trident®/116 ABC/56 Control)
0 hips
0 hips
0 hips

SECONDARY outcome

Timeframe: 6-10 years

Population: Participants may have one or both hips replaced. Number of participants/hips analyzed includes all enrolled. Number of hips with positive three question responses at postoperative periods indicated is included in the outcome results posting. Number of hips available for evaluation is indicated in the results heading by postoperative period.

A three question follow-up questionnaire was administered annually asking whether the participant is satisfied with the study total hip replacement(THR) (noted as "satisfied" below); whether they have any study hip pain (noted as "no pain" below); and whether they have had any surgery on the study hip during the previous year noted as "no surgery" below).

Outcome measures

Outcome measures
Measure
Trident® System
n=190 Hips
Hip received the Trident® Acetabular System with a ceramic insert and ceramic femoral head.
ABC System
n=185 Hips
Hip received the ABC Acetabular System with a ceramic insert and ceramic femoral head.
Control
n=89 Hips
Hip recevied the Omnifit Acetabular system with polyethylene insert and metal femoral head.
Hip Follow-Up Questionnaire
6yr satisfied (Trident ®168/ABC 150/Control 79)
163 hips
146 hips
76 hips
Hip Follow-Up Questionnaire
6yr no pain (Trident ®168/ABC 150/Control 79)
142 hips
129 hips
63 hips
Hip Follow-Up Questionnaire
6yr no surgery (Trident ®168/ABC 150/Control 79)
168 hips
147 hips
79 hips
Hip Follow-Up Questionnaire
7yr satisfied (Trident ®166/ABC 146/Control 71)
161 hips
145 hips
71 hips
Hip Follow-Up Questionnaire
7 yr no pain (Trident ®166/ABC 146/Control 71)
138 hips
130 hips
58 hips
Hip Follow-Up Questionnaire
7 yr no surgery (Trident® 166/ABC 146/Control 71)
165 hips
145 hips
71 hips
Hip Follow-Up Questionnaire
8yr satisfied (Trident ®164/ABC 141/Control 75)
160 hips
141 hips
73 hips
Hip Follow-Up Questionnaire
8yr no pain (Trident ®164/ABC 141/Control 75)
140 hips
127 hips
68 hips
Hip Follow-Up Questionnaire
8yr no surgery (Trident ®164/ABC 141/Control 75)
164 hips
141 hips
75 hips
Hip Follow-Up Questionnaire
9yr satisfied (Trident ®150/ABC 162/Control 83)
148 hips
161 hips
83 hips
Hip Follow-Up Questionnaire
9yr no pain (Trident ®150/ABC 162/Control 83)
128 hips
150 hips
73 hips
Hip Follow-Up Questionnaire
9yr no surgery (Trident ®150/ABC 162/Control 83)
150 hips
162 hips
83 hips
Hip Follow-Up Questionnaire
10yr satisfied (Trident ®143/ABC 148/Control 76)
142 hips
148 hips
76 hips
Hip Follow-Up Questionnaire
10yr no pain (Trident ®143/ABC 148/Control 76)
123 hips
136 hips
65 hips
Hip Follow-Up Questionnaire
10yr no surgery (Trident ®143/ABC 148/Control 76)
143 hips
148 hips
76 hips

Adverse Events

Trident® System

Serious events: 1 serious events
Other events: 36 other events
Deaths: 0 deaths

ABC System

Serious events: 1 serious events
Other events: 17 other events
Deaths: 0 deaths

Control

Serious events: 1 serious events
Other events: 7 other events
Deaths: 0 deaths

All Participants

Serious events: 1 serious events
Other events: 0 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
Trident® System
n=190 participants at risk
Hips that received the Trident® Acetabular System with a ceramic insert and ceramic femoral head.
ABC System
n=185 participants at risk
Hips that received the ABC Acetabular System with a ceramic insert and ceramic femoral head.
Control
n=89 participants at risk
Hips that received the Omnifit Acetabular system with polyethylene insert and metal femoral head.
All Participants
n=413 participants at risk
All participants combined.
Cardiac disorders
Non-operative Site Cardiac Disorders
0/0 • 10 years
Some participants were randomized to more than one hip system (17 participants/34 hips). Operative Site adverse events are reported by hip; systemic events are reported by participant. There were a total of 413 participants with 464 hips (190 Trident,185 ABC,89 Control) assessed.
0/0 • 10 years
Some participants were randomized to more than one hip system (17 participants/34 hips). Operative Site adverse events are reported by hip; systemic events are reported by participant. There were a total of 413 participants with 464 hips (190 Trident,185 ABC,89 Control) assessed.
0/0 • 10 years
Some participants were randomized to more than one hip system (17 participants/34 hips). Operative Site adverse events are reported by hip; systemic events are reported by participant. There were a total of 413 participants with 464 hips (190 Trident,185 ABC,89 Control) assessed.
0.24%
1/413 • Number of events 1 • 10 years
Some participants were randomized to more than one hip system (17 participants/34 hips). Operative Site adverse events are reported by hip; systemic events are reported by participant. There were a total of 413 participants with 464 hips (190 Trident,185 ABC,89 Control) assessed.
Musculoskeletal and connective tissue disorders
Operative Site Musculoskeletal and Connective Tissue Disorder
0.53%
1/190 • Number of events 1 • 10 years
Some participants were randomized to more than one hip system (17 participants/34 hips). Operative Site adverse events are reported by hip; systemic events are reported by participant. There were a total of 413 participants with 464 hips (190 Trident,185 ABC,89 Control) assessed.
0.54%
1/185 • Number of events 1 • 10 years
Some participants were randomized to more than one hip system (17 participants/34 hips). Operative Site adverse events are reported by hip; systemic events are reported by participant. There were a total of 413 participants with 464 hips (190 Trident,185 ABC,89 Control) assessed.
1.1%
1/89 • Number of events 1 • 10 years
Some participants were randomized to more than one hip system (17 participants/34 hips). Operative Site adverse events are reported by hip; systemic events are reported by participant. There were a total of 413 participants with 464 hips (190 Trident,185 ABC,89 Control) assessed.
0/0 • 10 years
Some participants were randomized to more than one hip system (17 participants/34 hips). Operative Site adverse events are reported by hip; systemic events are reported by participant. There were a total of 413 participants with 464 hips (190 Trident,185 ABC,89 Control) assessed.

Other adverse events

Other adverse events
Measure
Trident® System
n=190 participants at risk
Hips that received the Trident® Acetabular System with a ceramic insert and ceramic femoral head.
ABC System
n=185 participants at risk
Hips that received the ABC Acetabular System with a ceramic insert and ceramic femoral head.
Control
n=89 participants at risk
Hips that received the Omnifit Acetabular system with polyethylene insert and metal femoral head.
All Participants
n=413 participants at risk
All participants combined.
Musculoskeletal and connective tissue disorders
Operative Site Musculoskeletal and Connective Tissue Disorder
18.9%
36/190 • Number of events 48 • 10 years
Some participants were randomized to more than one hip system (17 participants/34 hips). Operative Site adverse events are reported by hip; systemic events are reported by participant. There were a total of 413 participants with 464 hips (190 Trident,185 ABC,89 Control) assessed.
9.2%
17/185 • Number of events 17 • 10 years
Some participants were randomized to more than one hip system (17 participants/34 hips). Operative Site adverse events are reported by hip; systemic events are reported by participant. There were a total of 413 participants with 464 hips (190 Trident,185 ABC,89 Control) assessed.
7.9%
7/89 • Number of events 8 • 10 years
Some participants were randomized to more than one hip system (17 participants/34 hips). Operative Site adverse events are reported by hip; systemic events are reported by participant. There were a total of 413 participants with 464 hips (190 Trident,185 ABC,89 Control) assessed.
0/0 • 10 years
Some participants were randomized to more than one hip system (17 participants/34 hips). Operative Site adverse events are reported by hip; systemic events are reported by participant. There were a total of 413 participants with 464 hips (190 Trident,185 ABC,89 Control) assessed.

Additional Information

Director of Clinical Research

Stryker Orthopaedics

Phone: 201-831-5401

Results disclosure agreements

  • Principal investigator is a sponsor employee The disclosure restriction on the PI to publish results of this Clinical Study or the results of the activities hereunder, any abstract, manuscript, presentation or other communication shall be submitted to sponsor for review and approval at least 60 days prior to submission for publication. The sponsor retains the right to deny publication or, at its sole option, to revise the manuscript to delete proprietary or other confidential commercial information.
  • Publication restrictions are in place

Restriction type: OTHER