PMC7486572_01
Plain x-ray (anterio-posterior view) of the both hips, showing right hip dislocation (Crowe type IV), with right femoral head osteoarthritic changes.
gr1.jpg
PMC7486572_01_gr1.jpg
fig0005
Intraoperative photo showing a brownish mass emerging through the wound.
gr2.jpg
PMC7486572_01_gr2.jpg
fig0010
A growth of multiple brown nodular lesions were found inside the articular capsule of cystic nature, no extra-articular erosion was seen [Fig. 2].
Postoperative plain radiograph of right hip (anteroposterior view) showing femoral osteotomy with well aligned acetabular cup and femoral stem.
gr3.jpg
PMC7486572_01_gr3.jpg
fig0015
The specimen was sent for histopathological examination, a benign condition was suspected intraoperatively, so the procedure was resumed with subtrochanteric osteotomy, total hip arthroplasty was performed [Fig. 3], both limbs at end of operation was in same length, postoperatively microscopic section of the biopsy showed PVNS, the finding was variable mixture of giant cells, hemosiderin, and brown pigmentation in the synoviocyte cytoplasm (Fig. 4).