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Postoperative Tendinopathy Changes in the Patellar Tendon after Total Knee Arthroplasty

Postoperative Tendinopathy Changes in the Patellar Tendon after Total Knee Arthroplasty

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
DRKS
Registry ID
DRKS00038734
Enrollment
50
Registered
2025-12-16
Start date
2026-01-01
Completion date
Unknown
Last updated
2026-01-12

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

Conditions

M22.8

Interventions

Group 1: Changes in the patellar tendon based on sonographic examinations preoperatively, 3 months postoperatively, and 12 months postoperatively of the operated and contralateral knee. The respective

Sponsors

Martin-Luther-Krankehaus
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Implantation of a primary total knee replacement and willingness to attend follow-up examinations after 3 and 12 months.

Exclusion criteria

Exclusion criteria: Revision surgery, tibial tubercle osteotomy, primary reconstruction of the patella, repeated surgery on the same knee during the course of the study, contralateral total knee replacement, partial knee replacement, or implantation of a pivot joint prosthesis.

Design outcomes

Primary

MeasureTime frame
The patellar tendon shows an increase in thickness after total knee arthroplasty, 3 months postoperatively and 12 months postoperatively. Primary endpoints: Sonographic examinations preoperatively, 3 months postoperatively, and 12 months postoperatively of the operated and contralateral knee.

Secondary

MeasureTime frame
How often do pathological changes occur in the patellar tendon? Changes in the patellar tendon based on sonographic examinations performed preoperatively, 3 months postoperatively, and 12 months postoperatively on the operated and contralateral knee. 1. Diameter of the tendon (thickness) 2. Neovascularization 3. Fluid in the paratendon 4. Inhomogeneities 5. Hypoechogenicity

Countries

Germany

Contacts

Public ContactWolf Petersen

Martin-Luther-Krankenhaus

wolf.petersen@jsd.de030 89553025

Outcome results

None listed

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