Fig. 5

Arthroscopic pie-crusting release of PMC for meniscoplasty. a Preoperative MRI showed a horizontal tear of the medial meniscus. b Arthroscopic visual field of the posteromedial space was not clear, and the probe tip could not pass vertically through the narrow gap. c After release, the probe tip could pass vertically through the narrow gap, and the visual field was improved. d Meniscoplasty of the posterior meniscus was performed without iatrogenic cartilage injury. e After 18 months follow-up, the shape of the posterior meniscus was satisfactory