Arthrocentesis – Also called joint fluid aspiration, arthrocentesis is removal of joint fluid through a hollow needle inserted into the joint space of the knee. Although the purpose of removing joint fluid from the knee is usually so that it can be tested in the lab, removing excess fluid can also quickly ease pain and swelling. Often after withdrawing fluid, doctors use the same puncture site where the fluid was removed to inject a corticosteroid preparation and/or anesthetic into the knee joint to further relieve pain and inflammation.
Cingal TM , Monovisc ® and Orthovisc ® may not be suitable for everyone. Talk to your doctor if you have questions regarding these products, or for more information on pain associated with osteoarthritis of the knee. Product information is only pertinent for use in Canada. Cingal TM , Monovisc ® and Orthovisc ® are trademarks of Anika Therapeutics Inc., used under licence by Pharmascience Inc. Pendopharm, Division of Pharmascience Inc. Product Licences are pertinent to use in Canada. Product Licences herein are not approved for use in the .
By using a high frequency ultrasound probe the wrist is imaged by placing the probe transverse across dorsiflexed wrist. The median nerve and ulnar artery is identified. At the level of the distal wrist crease, the needle is passed into the skin superficial to the ulnar artery, penetrating the flexor retinaculum. The needle is advanced toward the median nerve. The steroid solution is injected just under the flexor retinaculum then retracted and redirected deeper to the ulnar side of the median nerve. This allows the median nerve to be completely surrounded with the steroid solution. [ 3 ]