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evj685-sup-0001-FigS1.tif2432K

Fig S1: Arthroscopic image of the dorsolateral aspect of the tarsocrural joint, viewed from a dorsomedial arthroscopic portal. There is haemorrhage (arrows) overlying the distal tibia and the synovium is hyperaemic. LTR = lateral trochlear ridge talus. EB = extensor bundle.

evj685-sup-0002-FigS2.tif2091K

Fig S2: Arthroscopic image of the dorsomedial aspect of the tarsocrural joint viewed from a dorsomedial arthroscopic portal. There is haemosiderin staining of the synovium adjacent to the short medial collateral ligaments (SCL). MM = medial malleolus tibia.

evj685-sup-0003-FigS3.tif2293K

Fig S3: Arthroscopic view of the plantaromedial pouch of the tarsocrural joint from a plantarolateral arthroscopic portal. The joint capsule has torn and a clump of torn tissue (JC) has extruded into the joint lumen. The fibrous portion of the capsule can be delineated. MTR = medial trochlear ridge talus.

evj685-sup-0004-FigS4.pdf108K

Fig S4: a) Arthroscopic view of the dorsomedial aspect of the tarsocrural joint viewed from a dorsolateral arthroscopic portal. The joint capsule is torn, resulting in extension outside its normal confines. Arthroscopic rongeurs are being used to remove clumps of organised haemorrhage and disrupted capsule. b) Arthroscopic image of the dorsal pouch of the tarsocrural joint viewed from a dorsomedial arthroscopic portal. The arthroscope is positioned adjacent to the dorsal aspect of the distal tibia. Due to extensive tearing the joint extends proximally outwith its normal confines. There is a large clump of disrupted capsular tissue (JC).

evj685-sup-0005-FigS5.tif2326K

Fig S5: Arthroscopic image of the plantaromedial aspect of the tarsocrural joint viewed from a plantarolateral arthroscopic portal. There are synovio-synovio adhesions overlying torn joint capsule (arrows).

evj685-sup-0006-FigS6.tif2130K

Fig S6: Arthroscopic image of the lateral digital flexor tendon (LDFT) viewed through a tear in the plantar pouch of the tarsocrural joint (arrows), which has resulted in an open communication into the tarsal sheath.

evj685-sup-0007-FigS7.pdf188K

Fig S7: (a) Arthroscopic image of the dorsolateral aspect of the tarsocrural joint viewed from a dorsomedial arthroscopic portal. There is tearing of the short lateral collateral ligaments (SCL), which have herniated into the joint lumen and are displaying a crimp pattern. b) Close-up arthroscopic image of the same. c) The disrupted ligament is being removed with a motorised synovial resector. d) Following debridement the probe can be passed into the plantar pouch of the joint. e) Arthroscopic image of the plantarolateral pouch of the joint viewed from a dorsolateral portal. There is further disrupted tissue in the plantar pouch of the joint, which is being removed utilising a plantarolateral instrument portal. LTR = lateral trochlear ridge talus.

evj685-sup-0008-TableS1.xlsx12K

Table S1: Case details.

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