Clinical outcome and implant survival after knee TEP change to triathlon PS and TS systems

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00021478

Enrollment

300

Registered

2020-07-02

Start date

2026-12-31

Completion date

Unknown

Last updated

2026-03-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Z96.65 T84

Interventions

Group 1: In this group, patients are asked about implant survival and the revision rate. You have received a total knee endoprosthesis change to the PS system (posterior stabilized prosthesis). Group

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: - Male or female patients aged = 18 years - Knee TEP change performed on Stryker Triathlon PS or Triathlon TS prostheses

Exclusion criteria

Exclusion criteria: - Another revision of the knee TEP with replacement of individual or all components

Design outcomes

Primary

Measure	Time frame
The Primary outcome of this study is to examine implant survival and the revision rate after change operations (KTEP change to PS or TS systems). The different types of implants should be analyzed separately.	—

Secondary

Measure	Time frame
As a secondary outcome, patient satisfaction and the subjective function of the joint are to be examined in a patient survey using questionnaires. On the other hand, the radiological recordings that have already been made are to be analyzed preoperatively and postoperatively as well as progressive recordings with regard to common radiological criteria of knee arthroplasty (loosening according to the Knee Society Roentgenographic Evaluation and Scoring System - KSRESS, joint and implant position pre- and postoperatively with common axis angles).	—

Measure

Time frame

As a secondary outcome, patient satisfaction and the subjective function of the joint are to be examined in a patient survey using questionnaires. On the other hand, the radiological recordings that have already been made are to be analyzed preoperatively and postoperatively as well as progressive recordings with regard to common radiological criteria of knee arthroplasty (loosening according to the Knee Society Roentgenographic Evaluation and Scoring System - KSRESS, joint and implant position pre- and postoperatively with common axis angles).

—

Countries

Germany

Contacts

Public ContactYvonne Noll

Orthopädische Klinik der Medizinischen Hochschule Hannover im Diakovere Annastift, Leitung Klinisches Studienmanagement

yvonne.noll@diakovere.de0511-5354-649

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Apr 4, 2026