NCT00991445

Minimal Versus Conventional Exposure in Unicompartmental Knee Arthroplasty

Minimal vs. Conventional Exposure in Unicompartmental Knee Arthroplasty

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 40 (estimated)
• Sponsor: Region Örebro County · Academic / Other
• Sex: All
• Age: 20 Years – 80 Years
• Healthy volunteers: Not accepted

Summary

The purpose of this study is to determine whether Minimal Invasive Surgery results in less postoperative pain and better mobilization than conventional technique in Unicompartmental Knee Arthroplasty, provided that both groups receive Local Infiltration Analgesia.

Detailed description

Postoperative pain is often moderate to severe following unicompartmental knee arthroplasty. In order to reduce postoperative pain and improve mobilization the minimal invasive technique was developed. After a 8-10 cm skin incision, a medial parapatellar capsule incision in made. The rectus tendon or the vastus medialis are not incised and the patella is not everted. In recent years The Local Infiltration Analgesia (LIA) technique has been developed to reduce postoperative pain. With this LIA-technique, a long-acting local anesthetic (ropivacaine), a nonsteroidal anti-inflammatory drug (ketorolac), and epinephrine are infiltrated intraoperatively and via an intraarticular catheter postoperatively. The aim of this study is to investigate if Minimal Invasive Surgery results in less postoperative pain and better mobilization than conventional technique in Unicompartmental Knee Arthroplasty, provided that both groups receive Local Infiltration Analgesia.

Conditions

• Knee Osteoarthritis

Interventions

Type	Name	Description
PROCEDURE	Minimal Invasive Surgery	After a 8-10 cm skin incision, a medial parapatellar capsule incision is made. The vastus medialis muscle or the rectus tendon are not incised, nor is the patella everted. The patella is merely pushed slightly aside when the bone cuts are made and the prostheses are cemented in place. Local Infiltration Analgesia is used.
PROCEDURE	Conventional exposure	After a 15-20 cm midline skin incision is made, a medial parapatellar capsule incision is made. The incision is carried up through the insertion of the vastus medialis and into the rectus tendon. The patella is everted. The bone cuts are made and the prostheses are cemented in place. Local Infiltration Analgesia is used.

Timeline

• Start date: 2009-05-01
• Primary completion: 2011-05-01
• Completion: 2011-09-01
• First posted: 2009-10-08
• Last updated: 2009-10-08

Locations

1 site across 1 country: Sweden