case_images: PMC9091401_01
case_images: (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.
case_images: JOCR-12-89-g001.jpg
case_images: PMC9091401_01_JOCR-12-89-g001.jpg
case_images: F1
case_images: 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).
case_images: (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.
case_images: JOCR-12-89-g002.jpg
case_images: PMC9091401_01_JOCR-12-89-g002.jpg
case_images: F2
case_images: When we observed the images from the previous hospital for confirmation, we found that the ballooning deformation was gradually progressive (Fig. 2).
case_images: (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.
case_images: JOCR-12-89-g003.jpg
case_images: PMC9091401_01_JOCR-12-89-g003.jpg
case_images: F3
case_images: System) (Fig. 3). Surgical findings confirmed the nonunion and ballooning deformity of the distal humeral bone fragment and the cavity inside it (Fig. 4).
case_images: Photograph of the nonunion part and the ballooning deformed part. Vertically divided photograph of the ballooning deformity.
case_images: JOCR-12-89-g004.jpg
case_images: PMC9091401_01_JOCR-12-89-g004.jpg
case_images: F4
case_images: System) (Fig. 3). Surgical findings confirmed the nonunion and ballooning deformity of the distal humeral bone fragment and the cavity inside it (Fig. 4).
case_images: Photograph of the final examination. Active shoulder joint movement is almost impossible, but elbow joint function is maintained.
case_images: JOCR-12-89-g005.jpg
case_images: PMC9091401_01_JOCR-12-89-g005.jpg
case_images: F5
case_images: There was a slight improvement in active movement of her shoulder joint, but elbow joint function is maintained (Fig. 5).