Abstract
To assess comparatively the inflammatory response that follows CO(2) or Ringer's lactate joint capsular distension of horses submitted to experimental arthroscopy Each animal was submitted to a bilateral tarsocrural arthroscopy employing gas distention in one joint and fluid distention in the contralateral joint. Synovial fluid was evaluated at 0, six, 12, 24 and 48 hours post-operative. The use of CO(2) for arthroscopy causes an acute and mild synovitis alike to the liquid capsular distension, showing similar synovial fluid increase of leukocytes, TP, and TNF-α. Although synovial fluid PGE(2) content was higher in joints submitted to CO(2) distension, lower levels of hemoglobin and leukocytes oxidative burst after surgery indicates that CO(2) arthroscopy decreased intra-articular bleeding and activation of infiltrating leukocytes. The use of CO(2) for arthroscopic examination causes acute and mild synovitis that is similar to the effects caused by the liquid capsular distension. CO2 also seems to decrease intra-articular bleeding and activation of leukocytes.
Highlights
Surgical procedure the use of carbon dioxide had been described since 1921 in the human literature[1] liquid distension remains the most commonly protocol used in arthroscopy for joint capsule distension
One tarsus of each horse was randomly assigned to gas distension (GD) and the opposite tarsus underwent the liquid distension (LD)
All samples remained cloudy in every moment, after M6, the liquid from joints of group GD started to became orange in color differentially from group LD where all samples remained red until M48
Summary
Surgical procedure the use of carbon dioxide had been described since 1921 in the human literature[1] liquid distension remains the most commonly protocol used in arthroscopy for joint capsule distension. Other advantages that gas distension using CO2 offers for operative arthroscopy is the possibility of using CO2 laser, microarthroscopy, in vivo staining of the synovial membrane and transplantation of chondrocytes and/or cancellous bone grafting[2]. Besides all this described advantages, the use of this technique remains controversial: catastrophic reports of fatal embolization[2], increased pain[3] and a tendency to cause some irritation to the joint in humans[4] were described as complications of this technique. The aim of this study was to assess comparatively the inflammatory response that follows CO2 joint capsular distension to that of Ringer’s lactate solution distension
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