Programmed intermittent infusion combined with adductor hiatus block improves knee motion angle by enhancing posterior popliteal fossa analgesia after total knee arthroplasty: a randomized single-blind controlled trial

Application of adductor block in total knee arthroplasty under different approaches and administration methods guided by ultrasound

Status

Active, not recruiting

Phases

Early Phase 1

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR2400090031

Enrollment

Unknown

Registered

2024-09-23

Start date

2024-10-01

Completion date

Unknown

Last updated

2024-09-30

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

Conditions

Degenerative knee joint

Interventions

Continuous midsection adductor block analgesia group:Continuous middle adductor canal block

Continuous adductor hiatus block analgesia group:Continuous adductor hiatus block

Program controlled intermittent adductor hiatus block analgesia group:Programmed intermittent adductor hiatus block

Eligibility

Sex/Gender

All

Age

65 Years to 85 Years

Inclusion criteria

Inclusion criteria: Patients undergoing unilateral total knee replacement under general anesthesia, age 65~85 years, 18Kg/m^2 = BMI = 30Kg/m^2, ASA physical status I-IV, with normal preoperative cognitive function.

Exclusion criteria

Exclusion criteria: Patients with history of knee surgery within 3 months on the other side, spinal surgery within 6 months, allergic to local anesthetics, chronic pain requiring long-term opioid therapy, inability to understand visual analogue scale (VAS), ASA physical status over IV, and contraindications for peripheral nerve block.

Design outcomes

Primary

Measure	Time frame
VAS score;Quadriceps muscle strength;	—

Secondary

Measure	Time frame
Cumulative consumption of ropivacaine;The number of outbreaks of pain and the number of remedial analgesia;Knee flexion Angle and elevation distance of affected limb;Postoperative rehabilitation index;Puncture complication;	—

Countries

China

Contacts

Public ContactRan Wei

The First Affiliated Hospital of Chongqing Medical University

ranwei@hospital.cqmu.edu.cn+86 152 1519 5668

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Apr 19, 2026