1. Endoscopic Resection of Lateral Synovial Cyst of the Knee
Tun Hing Lui, M.B.B.S.(HK), F.R.C.S.(Edin), F.H.K.A.M., F.H.K.C.O.S. 
Arthroscopy Techniques 
Volume 4, Issue 6, Pages e815-e818 (December 2015)
DOI: /j.eats
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2. Fig 1
Magnetic resonance images of a patient showing the anatomic location and dimensions of the cyst.
Arthroscopy Techniques 2015 4, e815-e818DOI: ( /j.eats )
Copyright © 2016 Arthroscopy Association of North America Terms and Conditions

3. Fig 2
Endoscopic resection of lateral synovial cyst in right knee. The patient is in the floppy lateral position with the leg internally rotated. The proximal anterior portal is located at the intersection of the anterior border of the lateral collateral ligament and the projection line of the posterior border of the fibular head. The proximal posterior portal is located at the intersection of the anterior border of the biceps femoris tendon and the projection line of the anterior border of the fibular head.
Arthroscopy Techniques 2015 4, e815-e818DOI: ( /j.eats )
Copyright © 2016 Arthroscopy Association of North America Terms and Conditions

4. Fig 3
Endoscopic resection of lateral synovial cyst in right knee. The patient is in the floppy lateral position with the leg internally rotated. (A, B) The length of the instrument to be inserted through the proximal anterior portal should be controlled so that it will not go beyond the anterior border of the biceps femoris tendon. Doing so can avoid iatrogenic peroneal nerve injury. The knee is flexed during the procedure to relax the peroneal nerve and displace it posteriorly away from the operative field. The working area is the potential space deep to the lateral collateral ligament and anterior to the biceps femoris tendon. (C) The instruments should be directed medially to reach the working space.
Arthroscopy Techniques 2015 4, e815-e818DOI: ( /j.eats )
Copyright © 2016 Arthroscopy Association of North America Terms and Conditions

5. Fig 4
Endoscopic resection of lateral synovial cyst in right knee. The patient is in the floppy lateral position with the leg internally rotated. During arthroscopic debridement of zone 1, the popliteus tendon can be identified and should be respected.
Arthroscopy Techniques 2015 4, e815-e818DOI: ( /j.eats )
Copyright © 2016 Arthroscopy Association of North America Terms and Conditions

6. Fig 5
Endoscopic resection of lateral synovial cyst in right knee. The patient is in the floppy lateral position with the leg internally rotated. During zone 2 debridement, the lateral collateral ligament can be seen and should be respected.
Arthroscopy Techniques 2015 4, e815-e818DOI: ( /j.eats )
Copyright © 2016 Arthroscopy Association of North America Terms and Conditions