Fig. 1
From: A comparison of clinical efficacy between different surgical approaches for popliteal cyst
Graphic views of the surgery process of arthroscopic internal drainage. a The anterolateral portal where the arthroscope enter (red circle). b A schematic view showing the positions of the arthroscopy via anterolateral portal and the shave via posteromedial portal. c The arthroscopic view of the medial head of the gastrocnemius muscle and the synovial folds. d The posteromedial portal (red dot). e The shaver was positioned next to the medial head of gastrocnemius muscle (red arrow). f An opening of at least 5 mm in diameter resected by the shaver (red circle). Abbreviations: MF, medial femoral condyle; MTE, medial tibial eminence; PCL, posterior cruciate ligament; PMC, posteromedial corner