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Patients scheduled to have a surgery for Total Knee Arthroplasty will be assigned to one of three groups, each group will use a different approach using the ultrasound to guide the femoral nerve block as part of their treatment for controlling pain post-operatively.
This will be a prospective, single-blinded, randomized study. The patients will be randomly assigned to one of three groups:
Group I - single shot femoral nerve block Group II - continuous femoral nerve block - non stimulating catheter Group III - continuous femoral nerve block - stimulating catheter
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Single shot femoral nerve block | Active Comparator | A ultrasound probe will be used to identify the nerve, and correct needle placement. |
|
| Femoral nerve block non stimulating catheter | Active Comparator | A ultrasound probe will be used to identify the nerve, and correct needle placement. The catheter will be placed with the nerve stimulator powered off. |
|
| Femoral nerve block stimulating catheter | Active Comparator | A ultrasound probe will be used to identify the nerve, and correct needle placement. The catheter will be placed with the nerve stimulator powered on. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Femoral nerve block | Procedure | A visible or palpable cephalad movement of the patella will confirm needle placement. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Change in the Numeric Rating Pain Score | At the conclusion of the surgery time 0, at 15, 30, and 45 minutes, at 1, 12, 24, 48 hours, and day 3, 7, 14, and 30 after the surgery. | Postoperative |
| Measure | Description | Time Frame |
|---|---|---|
| Change in the ability to move the knee | At the conclusion of the surgery time 0, at 15, 30, and 45 minutes, at 1, 12, 24, 48 hours, and day 3, 7, 14, and 30 after the surgery. | Postoperative |
| Change in Supplemental pain medications |
| Measure | Description | Time Frame |
|---|---|---|
| Change in the overall satisfaction | At the conclusion of the surgery time 0, at 15, 30, and 45 minutes, at 1, 12, 24, 48 hours, and day 3, 7, 14, and 30 after the surgery. | Postoperative |
Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Antony Tharian, M.D. | Chicago Anesthesia Pain Specialists | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Chicago Anesthesia Pain Specialists | Chicago | Illinois | 60657 | United States |
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| Femoral nerve block non stimulating catheter | Procedure | A visible or palpable cephalad movement of the patella will confirm needle placement. The catheter will be placed with the nerve stimulator powered off. |
|
| Femoral nerve block stimulating catheter | Procedure | A visible or palpable cephalad movement of the patella will confirm needle placement. The catheter will be placed with the nerve stimulator powered on. |
|
At the conclusion of the surgery time 0, at 15, 30, and 45 minutes, at 1, 12, 24, 48 hours, and day 3, 7, 14, and 30 after the surgery.
| Postoperative |