|Minor Surgical Procedures in Remote Areas (MSF, 1989, 172 p.)|
|Chapter 3: Catheterisation and drainage|
Drainage of fluid in the articular cavity of the knee.
· Painful hemarthroses in cases of knee torsion: wait 24 to 48 hours before puncture and drainage to allow the hematoma to collect and to prevent recurrence.
· Hydarthrosis: injection of diagnostic fluid or removal of post-trauma serous fluid.
If pus is found in the joint space, surgical drainage is necessary.
Large bore needle and syringe or trochar.
Figures 67, 68
· Rigorous asepsis: drapes and sterile gloves, clean with polyvidone iodine (see table page 7).
· Puncture with a trocar or large needle at an angle above and lateral to the knee cap, and 1/2 cm above and behind.
· Advance at an angle of 45° to the horizontal and sagittal planes, and push the needle behind the knee cap.
· To empty the cavity, squeeze the quadriceps muscle with the left hand while aspirating on the syringe with the other hand.