by ARC | Mar 8, 2008 | Knee
Although Total Knee Arthroplasty (TKA) surgery enjoys 90% of outcomes with good to excellent results, some patients have difficulty adjusting their gait to accommodate the new articulations inherent in contemporary implant designs. Paradoxical motions inclusive of...
by ARC | Mar 8, 2008 | Hip
Modular acetabular designs enjoy widespread use in THA procedures. Their mechanical performance has continually increased through improved locking mechanism assemblies. Recently, a number of enhanced cross-linked polyethylenes have emerged whose commonly heralded...
by ARC | Mar 8, 2008 | Hip
The procedural standard for the fixation of metallic acetabular shells is under-reaming and impaction. Recently, concerns have arisen regarding achieving and maintaining secure ceramic liners when thin shells are deformed during normal insertion. Failure to achieve an...
by ARC | Mar 8, 2008 | Hip
Four well-placed crosslinked UHMPWE acetabular liners of distinct design were retrieved subsequent to fracture failure of the rim. In each case, electron microscopy of the fracture surface revealed fatigue initiation markings associated with a stress concentrating...
by ARC | Mar 8, 2008 | Ankle
The use of total ankle replacements is increasing as an alternative to arthrodesis that allows patients to maintain both mobility and function concomitant with pain relief. Their success, however, remains mixed mostly attributed to the interaction of design geometries...