PMC9091401_01
(a) Plain radiograph at the first visit to our hospital. Severe ballooning deformity is observed in the humeral bone beyond the nonunion site. (b) A flask-like deformation is observed on 3D computed tomography.
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F1
X-ray at the time of referral showed a nonunion at the fracture and a severe ballooning deformity in the distal bone fragment (Fig. 1a).Computed tomography showed similar findings, and a thinned bone cortex was found at the same site (Fig. 1b).
(a) Plain radiograph after a periprosthetic fracture. Fracture is found at the tip of the stem. (b) Plain radiograph after a revision hemiarthroplasty with a long stem. The reduction and fixation of the fractured site is insufficient. (c) Plain radiograph 3 months after the revision surgery. Aseptic loosening is observed at the tip of the stem. (d) Plain radiograph 1.5 years after the revision. A small ballooning deformity is recognized around the tip of the stem.
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F2
When we observed the images from the previous hospital for confirmation, we found that the ballooning deformation was gradually progressive (Fig. 2).
(a) AP view of a plain radiograph after total humeral replacement. AP: anterior posterior. (b) Lateral view of a plain radiograph after total humeral replacement.
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F3
System) (Fig. 3). Surgical findings confirmed the nonunion and ballooning deformity of the distal humeral bone fragment and the cavity inside it (Fig. 4).
Photograph of the nonunion part and the ballooning deformed part. Vertically divided photograph of the ballooning deformity.
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F4
System) (Fig. 3). Surgical findings confirmed the nonunion and ballooning deformity of the distal humeral bone fragment and the cavity inside it (Fig. 4).
Photograph of the final examination. Active shoulder joint movement is almost impossible, but elbow joint function is maintained.
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F5
There was a slight improvement in active movement of her shoulder joint, but elbow joint function is maintained (Fig. 5).