PMC10154564_01
The right index finger with slight swelling and redness on the back of the right index distal interphalangeal joint, and obvious swelling and paleness on the palm side in the distal interphalangeal joint.
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F1
Physical examination revealed slight swelling, redness, and tenderness on the back of the right index DIP joint, and noticeable swelling, paleness, and tenderness on the palm side (Figure 1).
Preoperative x-ray of the right index finger depicting soft tissue swelling at the distal interphalangeal joint.
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F2
The patient was initially diagnosed with chronic tendon sheath infection, but there were no typical Kanavel symptoms, such as tenderness along the flexor sheath, fusiform swelling, or pain on passive extension or with the finger held in partial flexion. x-rays of the right index finger depicted soft tissue swelling at the DIP joint (Figure 2).
The calcifications during the operation.
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F3
The ulnar side was then incised to the level of the FDS tendon of the index finger, and small calcifications were detected (Figure 3).
Postoperative histopathological examination revealed calcium hydroxyapatite deposition with necrosis of surrounding tissue.
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F4
Hematoxylin-eosin staining of histological sections of the resected tissue revealed calcium hydroxyapatite deposition with necrosis of surrounding tissue (Figure 4), confirming the diagnosis of calcific tendinitis.
Postoperative x-ray depicting no residual calcifications.
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F5
One month after surgery, the pain and swelling had completely disappeared (Figures 5, 6).
The finger after 1 month, by which time the pain and swelling had completely subsided.
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F6
One month after surgery, the pain and swelling had completely disappeared (Figures 5, 6).