Femoral neck modularity: A bridge too far—Affirms

The use of femoral stems with dual-taper modularity in total hip arthroplasty offers increased flexibility in restoring hip-center anatomy. Independent of femoral fixation, the modular neck offers the surgeon additional options in recreating femoral version, correcting limb length, and altering offset. Additionally, proponents cite smaller incisions, less dissection, reduced impingement and dislocation, and ease of revision. However, adverse events associated with modular femoral neck usage, including local and systemic effects of corrosion, fracture, and complexities of revision, are now well documented. This review highlights the most current basic science and clinical literature regarding the complications associated with modular femoral necks and their mechanisms of failure.