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Fig. 4 | Journal of Orthopaedic Surgery and Research

Fig. 4

From: High-resolution 3T magnetic resonance imaging and histological analysis of capsuloligamentous complex of the first metatarsophalangeal joint

Fig. 4

The central portion of the plantar plate and sesamoid phalangeal ligaments of the first MTPJ from a right foot specimen (32 years old). a Coronal schematic diagram of first MTPJ; b coronal anatomic specimen; the central portion of the plantar plate (white triangle) was separate fibrous band located between the medial and lateral sesamoid phalangeal ligaments (white arrowheads); c and d HE and Masson’s trichrome staining of the first MTPJ (original magnification × 4). The central portion of the plantar plate (white triangle) and the sesamoid phalangeal ligaments (white arrowheads) were composed of the same continuous collagen fibers and showed eosinophilic features by HE, blue with Masson’s trichrome staining, respectively. (White pentagram = the flexor hallucis longus tendon; FHL = flexor hallucis longus tendon; LSP = lateral sesamoid phalangeal ligament; MSP = medial sesamoid phalangeal ligament; MT = metatarsal; P = phalanx; PP = central portion of the plantar plate.)

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