Trunnionosis: Does Head Size Affect Fretting and Corrosion in Total Hip Arthroplasty?
Increased femoral head diameter in THA may produce greater fretting damage owing to and increased head-neck moment arm. There is no associated increase in corrosion with 28-mm and 32-mm heads of this taper design. The longer a THA prosthesis is implanted, the greater the risk of damage due to corrosion.
Ultrasound-guided FNA and FNC sampling result in comparable diagnostic cytologic adequacy rates. Equivalent diagnostic yields and the technical ease of capillary sampling may prompt adoption of FNC sampling at high-volume endocrine/radiology practices.