Metallosis after hemiarthroplasty as a result of glenoid erosion causing contact with retained metallic suture anchors: a case series

Arthroplasty-Related Pseudotumor of the Scapula: Case Report and Review of the Literature

“…Most case reports about ARMD at the shoulder are based on clinical descriptions of intraoperative metallosis. [13][14][15][16][17][18][19][20][21] Our patient presented with a large pseudotumor centered in the scapula that simulated the CT appearance of a malignant bone tumor, a radiologic finding not previously reported in the literature. The emphasis of previously published cases of ARMD in the setting of shoulder arthroplasty has focused on reporting the features of metallosis that clinically feature dark metallic staining, macroscopic debris, and visible signs of hardware failure in the intracapsular and extracapsular tissues encountered at the time of surgery.…”

“…prosthesis mechanical wear, prosthesis malalignment, and periprosthetic osteolysis and erosion. 13,[17][18][19] Particle disease was the underlying mechanism for pseudotumor formation at the scapula in our case. The longstanding presence of the humeral hemiarthroplasty, the worsening radiologic signs of osteolysis at the adjacent proximal humerus over time, and the tissue features of the scapular mass biopsy all support this hypothesis.…”

“…The emphasis of previously published cases of ARMD in the setting of shoulder arthroplasty has focused on reporting the features of metallosis that clinically feature dark metallic staining, macroscopic debris, and visible signs of hardware failure in the intracapsular and extracapsular tissues encountered at the time of surgery. 13,15,16,20,21 Prior reports have not described imaging features of pseudotumor at the shoulder, but instead generally have described radiological signs of hardware fracture, There is no evidence of malignant cells identified in this sample. prosthesis mechanical wear, prosthesis malalignment, and periprosthetic osteolysis and erosion.…”

Giant cell tumor formation due to metallosis after open latarjet and partial shoulder resurfacing

“…1 Only a few case reports exist in the literature that describe metallosis in the shoulder, but there is no report on metallosis and giant cell tumor formation in the shoulder joint after multiple complex shoulder revision surgeries. [2][3][4][5] We report a 43-year old female with a history of multiple revision surgeries done at outside hospital who presents to the senior author (XL) with chronic right shoulder pain due to post traumatic arthritis and advanced metallosis with giant cell tumor formation of the soft tissue. We describe the patient's clinical presentation, management and a review of the literature about metallosis and giant cell tumor formation after shoulder surgery.…”