case_images: PMC3379739_01
case_images: X-ray. Two 4-mm, radio-opaque masses (arrow) can be visualized alongside the volar and radial aspect of the head of the right first metacarpal bone. No acute fracture is noted.
case_images: eplasty12e29_fig1.jpg
case_images: PMC3379739_01_eplasty12e29_fig1.jpg
case_images: F1
case_images: X-rays of the digit revealed radio-opaque masses around the volar aspect of MP joint consistent with synovial chondromatosis without evidence of acute fracture (Fig 1).
case_images: Computed tomography. Foci of mineralization (arrow) are again seen located adjacent to the volar and radial aspect of the right first metacarpophalangeal joint. Based on the x-ray and CT images, a radiographic diagnosis of synovial chondromatosis was suggested.
case_images: eplasty12e29_fig2.jpg
case_images: PMC3379739_01_eplasty12e29_fig2.jpg
case_images: F2
case_images: CT scan of the hand was obtained. Consistent with the initial x-rays, foci of mineralization adjacent to the thumb MP joint were noted (Fig 2).
case_images: Intraoperative aspect. Firm, irregularly shaped masses adjacent to but not penetrating the metacarpophalangeal joint capsule are visualized (arrows).
case_images: eplasty12e29_fig3.jpg
case_images: PMC3379739_01_eplasty12e29_fig3.jpg
case_images: F3
case_images: Deeper dissection revealed multiple firm, irregularly shaped masses adjacent to but not penetrating the MP joint capsule (Fig 3).
case_images: H & E staining of excised masses. The purple granules (arrows) were determined to be result of tumoral calcium phosphate deposition disease (calcinosis).
case_images: eplasty12e29_fig4.jpg
case_images: PMC3379739_01_eplasty12e29_fig4.jpg
case_images: F4
case_images: Histological examination of the resected specimen confirmed that the excised masses resulted from calcium phosphate deposition (Fig 4).