Comparative Study Between Patellar Denervation and Non-patellar Denervation in Total Knee Arthroplasty With Patellar Resurfacing

Patellar Denervation in Total Knee Arthroplasty With Patellar Resurfacing to Relieve Postoperative Anterior Knee Pain: a Randomized Control Trial

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT03389880

Enrollment

241

Registered

2018-01-04

Start date

2017-12-21

Completion date

2020-08-20

Last updated

2020-11-23

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

Conditions

Non-patellar Denervation, Patellar Denervation, Patellar Resurfacing

Brief summary

The purpose of this study is to compare the post-operative anterior knee pain (AKP) between patellar denervation and non-patellar denervation in total knee arthroplasty with patellar resurfacing

Interventions

PROCEDURETotal knee arthroplasty

A surgical procedure in which parts of the knee joint are replaced with artificial parts (prostheses)

PROCEDUREPatellar denervation

circumpatellar electrocautery with monopolar coagulation diathermy

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

TRIPLE (Subject, Caregiver, 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
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

Secondary

Measure	Time frame	Description
range of motion of knee	Change from baseline range of motion of knee at 3 months, 6 months, and 12 months after surgery	degree of motion of the knee after surgery
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 (Bartlett score)	Change from baseline new patellar score at 3 months, 6 months, and 12 months after surgery	New patellar score or Bartlett score (minimum 0, maximum 30)
activity of daily living	Change from baseline activity of daily living at 3 months, 6 months, and 12 months after surgery	activity of daily living score (minimum 0, maximum 20)
patellar shift index	Change from baseline 3 months, 6 months, and 12 months after surgery	The estimation of patellar position relative to the trochear
prevalence of anterior knee pain	Change from baseline prevalence of anterior knee pain at 3 months, 6 months, and 12 months after surgery	Percent of anterior knee pain
post-operative complication	Number and type of post-operative complication at 3 months, 6 months, and 12 months after surgery	Number and type of post-operative complication
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)

Countries

Thailand

Outcome results

None listed

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