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NCT Number: NCT07342166

Effect of Patellar Denervation on Post-operative Knee Pain and Knee Function in Total Knee Arthroplasty

This study is a double-blind randomized controlled trial aiming to investigate the effects of patellar denervation using electrocautery on postoperative knee pain and knee function in patients undergoing primary total knee arthroplasty (TKA) without patellar resurfacing.

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Key information

Conditions

Osteoarthritis, Knee Arthritis Joint Diseases Musculoskeletal Diseases Osteoarthritis Rheumatic Diseases

Age range

55 year–85 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Chalathorn Kulthonchalanan

Chon Buri, Changwat Chon Buri, 20110, Thailand

About this study

This study is a prospective, double-blind randomized controlled trial conducted at Queen Savang Vadhana Memorial Hospital between 2023 and 2025. The aim of the study is to assess the effect of patellar denervation using electrocautery on postoperative knee pain and knee function in patients undergoing primary total knee arthroplasty (TKA) without patellar resurfacing.

Sixty-four patients were enrolled and randomly assigned to either the patellar denervation group (PD) or the non-denervation group (NPD), with 32 participants in each group.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Age 55-85 years old
  • Knee osteoarthritis
  • Plan for total knee arthroplasty after failed conservative treatment for at least 3 months

Exclusion criteria

  • Previous history of trauma, fracture or open surgery on the same knee
  • Inflammatory arthritis or Crystal-induced arthritis
  • Patellar instability or isolated patellofemoral osteoarthritis
  • Unable to answer questionnaire
  • Cannot tolerate surgery due to medical comorbidities

Treatment and study plan

Patellar Denervation

Procedure

Electrocautery patella circumferentially during total knee arthroplasty

Primary outcomes

  1. Visual analog scale score for knee pain

    Time frame: 2 weeks, 6 weeks, 3 months, 6 months, and 12 months

Secondary outcomes

  1. Kujala score

    Time frame: 3 months, 1 year

  2. Knee Society score

    Time frame: 3 months, 1 year

  3. Timed up and go test

    Time frame: 3 months, 1 year

Sponsors and collaborators

Lead sponsor

Queen Savang Vadhana Memorial Hospital, Thailand

Other

Registry information

Official study title

Effect of Patellar Denervation on Post-operative Knee Pain and Knee Function in Total Knee Arthroplasty: A Randomized Controlled Trial

Acronym: PD

Important dates

Study start
2023
Primary completion
2025
Study completion
2025
First posted
Jan 15, 2026
Registry last updated
Jan 15, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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