Inside-Out Trans-Arthroscopic Drain Application During Knee Joint Arthroscopy  Gian M. Salzmann, M.D., Stefan Preiss, M.D., Laurent P. Harder, M.D., Florian D. Naal, M.D.  Arthroscopy Techniques  Volume 4, Issue 6, Pages e643-e646 (December 2015) DOI: 10.1016/j.eats.2015.07.003 Copyright © 2016 Arthroscopy Association of North America Terms and Conditions

Fig 1 Arthroscopic images of a left knee, viewing from the anterolateral portal, with the patient in the supine position. (A) The spear is introduced through the medial portal under full arthroscopic visualization. (B) The point of capsular perforation is chosen. (C) The drain is applied in an inside-out manner until the perforation is clearly visible. (D) The intra-articular position of the drain can be changed by use of arthroscopic instruments. Arthroscopy Techniques 2015 4, e643-e646DOI: (10.1016/j.eats.2015.07.003) Copyright © 2016 Arthroscopy Association of North America Terms and Conditions

Fig 2 Macroscopic image of a right knee, with the patient in the supine position. After cessation of knee arthroscopy, 2 drains have been applied: 1 proximomedial and 1 proximolateral to the patella. The arthroscopy portals remain unviolated. Arthroscopy Techniques 2015 4, e643-e646DOI: (10.1016/j.eats.2015.07.003) Copyright © 2016 Arthroscopy Association of North America Terms and Conditions

Fig 3 Macroscopic image of a left knee, with the patient in the supine position. One drain has been applied after completion of knee arthroscopy. The drain is diverted through the anterolateral portal, and wound closure has been performed proximal to it. The arthroscopy portals remain affected by the drain. Arthroscopy Techniques 2015 4, e643-e646DOI: (10.1016/j.eats.2015.07.003) Copyright © 2016 Arthroscopy Association of North America Terms and Conditions