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| Name | Class |
|---|---|
| Saskatoon Health Region | OTHER |
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his study is being done because total knee replacements can leave patients with considerable pain after surgery. Therefore, many studies have been done to find the best ways to control knee pain after the surgery. Currently, a popular approach is to use many different techniques to control the pain. This includes injecting freezing (local anesthetic) into the spinal column (spinal anesthetic), injecting freezing close to the nerves of the knee and using various kinds of medications (e.g. narcotics and anti-inflammatory medications). Studies have shown using this a combination of techniques can reduce pain and allow earlier discharge from the hospital. However, one downside to this approach is it does not usually control the pain in the back of the knee. One new technique has been used to try and overcome this. This technique is called a "posterior cruciate ligament block" or "PCL block". It involves injecting a drug into the back of the knee which will block the nerves in this area. Sometimes the investigators refer to this as "freezing".
The purpose of our study is to determine whether this "PCL Block" will improve pain after the total knee replacement surgery. The investigators will also determine whether this technique will improve movement in the knee and lessen narcotic usage after the surgery.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Saline | Placebo Comparator |
| |
| Ropivicaine | Active Comparator |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| transcruciate injection of 20cc of normal saline | Procedure | Group 2 (control group) will receive a transcruciate injection of 20cc of normal saline through the posterior cruciate ligament during the procedure (in addition to a subarachnoid block and femoral nerve block pre-operatively). |
| Measure | Description | Time Frame |
|---|---|---|
| Knee flexion | up to one week postoperative |
| Measure | Description | Time Frame |
|---|---|---|
| Postoperative pain score | Pain scores will be recorded at rest and on attempt of achieving a 90 degree passive flexion of the knee. | in PACU , on ward (baseline), and post-op day 1 & 2 at 10am & 6pm |
| Total narcotic consumption |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Saskatoon City Hospital | Saskatoon | Saskatchewan | S7K 5T6 | Canada |
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| transcruciate injection of 20 cc of 0.5% Ropivacaine | Procedure | Group 1 (study group) will receive a transcruciate injection of 20 cc of 0.5% Ropivacaine through the posterior cruciate ligament during the procedure (in addition to a subarachnoid block and femoral nerve block pre-operatively). |
|
| up to 1 week postoperative |
| ID | Term |
|---|---|
| D000077212 | Ropivacaine |
| ID | Term |
|---|---|
| D000813 | Anilides |
| D000577 | Amides |
| D009930 | Organic Chemicals |
| D000814 | Aniline Compounds |
| D000588 | Amines |
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