case_images: PMC8381408_01
case_images: Retained oyster shell fragments in the right knee. (a) AP view of right knee revealing
  soft tissue swelling. (b) Lateral view of right knee revealing evidence of retained
  foreign bodies. (c) Surgical specimen depicting oyster shell fragments removed from the
  right knee measuring approximately 0.5 cm and 1 cm.
case_images: 10.1177_2050313X211034683-fig1.jpg
case_images: PMC8381408_01_10.1177_2050313X211034683-fig1.jpg
case_images: fig1-2050313X211034683
case_images: An X-ray (Figure 1(a) and (b)) of the knee performed at that time revealed foreign bodies overlying the patella. Surgical wound debridement was performed, which revealed purulent synovial fluid and two fragments of oyster shells measuring 0.5 cm and 1.0 cm (Figure 1(c)).