Incidence of Patellar Crepitus in Removal and Non-removal of Fibrosynovial Tissue at Superior Pole of Patella

Prospective Randomized Controlled Trial: Comparison of Incidence of Patellar Crepitus Between Removal and Non-removal of Fibrosynovial Tissue at the Border of the Superior Pole of the Patellar

Status

UNKNOWN

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT04429997

Enrollment

138

Registered

2020-06-12

Start date

2020-06-10

Completion date

2022-12-31

Last updated

2021-08-31

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

Conditions

Non-removal of Fibrosynovial Tissue, Patellar Non-resurfacing, Removal of Fibrosynovial Tissue

Brief summary

The purpose of this study is to compare the incidence of patellar crepitus complication and the clinical outcome between remove and not remove fibrosynovial tissue at the border of the superior pole of the patellar in posterior stabilized total knee arthroplasty.

Interventions

PROCEDURERemoval of fibrosynovial tissue

Remove of fibrosynovial tissue at the superior border of patella

PROCEDURENon-removal of fibrosynovial tissue

Do not remove of fibrosynovial tissue at the superior border of patella

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

DIAGNOSTIC

Masking

DOUBLE (Subject, Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Healthy volunteers

Inclusion criteria

* Primary osteoarthritis of knee who were scheduled for a primary total knee arthroplasty

Exclusion criteria

* Valgus deformity * History of inflammatory arthroplathy * Previous fracture or open surgery on the same knee * History of patellar instability

Design outcomes

Primary

Measure	Time frame	Description
Incidence of patellar crepitus complication	Change from baseline patellar crepitus complication 3 months, 6 months, and 12 months after surgery	Incidence of patellar crepitus complication (present, absent)

Secondary

Measure	Time frame	Description
Knee Society and Knee Society function score	Change from baseline Knee Society and Knee Society function score at 3 months, 6 months, and 12 months after surgery	Knee Society and Knee Society function score (minimum 0, maximum 200)
New patellar score	Change from baseline new patellar score at 3 months, 6 months, and 12 months after surgery	New patellar score (minimum 0, maximum 30)
Oxford knee score	Change from baseline Oxford knee score 3 months, 6 months, and 12 months after surgery	Oxford knee score (minimum 0, maximum 48)
Change of post-operative anterior knee pain	Change from baseline Visual Analog Scale for anterior knee pain at 3 months, 6 months, and 12 months after surgery	Visual Analog Scale for anterior knee pain (minimum 0, maximum 10) Do higher values represent a worse outcome

Countries

Thailand

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026