Study for the minimum effective concentration of ropivacaine in continuous adductor canal block analgesia after total knee arthroplasty

Study for the median effective concentration of ropivacaine in continuous adductor canal block analgesia after total knee arthroplasty

Status

Active, not recruiting

Phases

Early Phase 1

Study type

Observational

Source

ChiCTR

Registry ID

ChiCTR2000029794

Enrollment

Unknown

Registered

2020-02-14

Start date

2017-09-18

Completion date

Unknown

Last updated

2020-04-13

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

Conditions

arthropathy

Interventions

Experimental Group:Different concentration of ropivacain

Eligibility

Sex/Gender

All

Age

55 Years to 75 Years

Inclusion criteria

Inclusion criteria: 1. Patients undergoing total knee arthroplast; 2. Male or female with no brain dysfunction and easy to cooperate, who can understand Chinese and correctly express willingness; 3. Patients of ASA I-III; 4. patients aged from 55-75 years.

Exclusion criteria

Exclusion criteria: 1. Patients who refuse to participate in the research; 2. Patients with moderate or moderate above operation side knee joint deformity (varus, flexion deformity); 3. Patients with neuropathologic lesions or history of operation or trauma on the operation side limb; 4. Diabetic patients with peripheral neuropathy; 5. Patients have alcohol or drug abuse, or allergy to any drug(local anesthetics) used in this study; 6. patients with severe cardiopulmonary insufficiency.

Design outcomes

Primary

Measure	Time frame
VAS score;	—

Secondary

Measure	Time frame
Quadriceps strength;Bruggrmann comfort scale;Untoward effect;	—

Countries

China

Contacts

Public ContactHuang Xiaoyu

Anesthesiology Department of the Second Affiliated Hospital of Guangzhou University of Chinese Medicine

elegancerose@163.com+86 13609035709

Outcome results

None listed

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