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Fig. 7 | BMC Veterinary Research

Fig. 7

From: Osteoarthritis of the temporomandibular joint in the Eastern Atlantic harbour seal (Phoca vitulina vitulina) from the German North Sea: a study of the lesions seen in dry bone

Fig. 7

Sagittally sectioned mandibular head of left mandible of individual ZIK - 29511 showing severe (score 3) osteoarthritic changes. a gross appearance of sectioned mandibular head, anterior to the right. Note marked porosity of subchondral bone with presence of subchondral cysts of different size (asterisks), some of which open onto the articular surface (arrowheads); arrow: layer of calcified fibrocartilage; rectangles indicate the approximate location of the regions shown in (b) and (c). b BSE-image showing calcified fibrocartilage (CC) and subchondral bone (SB) of the mandibular head. Note marked porosity and mottling of subchondral bone. c BSE-image showing calcified fibrocartilage (CC) and subchondral bone (SB) at higher magnification. Note signs of increased remodeling of the SB and bone mottling. Asterisks: former resorption bays that have been filled in with new bone

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