In case 1, 1 month of external coaptation resulted in a delayed union, significant osteolysis
, and presumptive osteomyelitis, which led to the decision to treat with a key ring fixator.
The most common reasons to repeat revision surgery following THA revision surgeries are infection, aseptic loosening, the wear on the interface and osteolysis
and dislocation secondary to the wear (1, 3, 7, 11-14).
A computed tomography (CT) scan of the head showed thickening of the ear skin; focal tympanal bone osteolysis
; partial right mastoid air cells and middleear cavity opacification; and osteolysis
of the occipital, styloid, and mastoid bones consistent with MOE (Appendix Figure, https://wwwnc.cdc.gov/EID/article/25/4/18-0710App1.pdf).
Farber disease patients typically present with the cardinal symptoms of joint contractures or arthritis, subcutaneous nodules and/or a weak or hoarse voice, impaired cognitive development as well as impact on lungs, liver and bones (osteolysis
MoP is typically used in small diameter devices in order to limit the production of Polyethylene (PE) wear debris, which causes osteolysis
leading to aseptic loosening and failure.
Following an examination, the first cranial computed tomography (CT) scan showed a continuity solution between skin and region of parameningeal space, with accumulation of extradural substance, besides signs of chronic osteolysis
with low resorption, compatible with chronic osteomyelitis (Fig.
The cemented acetabular cup in Charnley arthroplasty in young and active patients has been shown to be associated with a higher degree of polyethylene wear and osteolysis
at the cement bone interface.
The pathogenesis of aseptic loosening is not clear, but previous studies have indicated that an imbalance in osteogenesis and osteolysis
around the prosthesis is the root cause of aseptic loosening (2, 3).
In a study published in the Journal of Orthopaedic Research, investigators have identified urinary markers that differentiate total hip replacement patients who eventually develop bone tissue destruction, or osteolysis
, from patients who do not.
Anteroposterior radiographs were obtained to assess stem stability, stem subsidence, stress shielding, reactive line, osteolysis
, and cup stability.
and vertebral body bony defects are common in these patients, occurring in 100% of cervical spine fusion and 82% of lumbar spine fusions at 6 weeks in a recent case series (Figure 2).
 Increased levels of fibroblast prostaglandin E2 and collagenase enable osteolysis
by mucocoeles, facilitating their local extension.