Multifactorial analysis of dissatisfaction after primary total knee replacement.

Background: The aims of this study were to identify the prevalence and causes of dissatisfaction in a cohort of private practice patients, and to compare the psychological characteristics of dissatisfied patients to matched, satisfied controls.

Methods: Unilateral TKR patients were evaluated to identify those dissatisfied with their TKR. Dissatisfied and satisfied patients were matched in terms of age, gender, follow-up duration and body mass index (BMI).

Polymorphonuclear cell count on frozen section is not an absolute index of reimplantation in infected total knee arthroplasty.

We evaluated the outcomes in 15 patients with infected total knee arthroplasty (TKA) who underwent reimplantation following excision arthroplasty in the presence of five to twenty polymorphonuclear cells per high power field (hpf) on intraoperative frozen section. At a minimum of two years of follow-up, we achieved 100% infection eradication rate with normalization of C-reactive protein levels, no radiolucency on plain radiographs and no clinical evidence of recurred infection. Successful reimplantation for infected TKA is possible despite of the presence of five to twenty polymorphonuclear cells per hpf in intraoperative frozen section with clear appearance of the tissues in the operative field.