Gross polyethylene failure in total knee arthroplasty.

A total of 12 total knee replacements in nine patients with evidence of gross polyethylene failure at the time of revision surgery were identified. There were nine tibial and three patellar component failures. The average time from index to revision arthroplasty was 6 years (range: 0.

Low-velocity knee dislocation.

Complete knee dislocation is an uncommon but potentially devastating injury with a reported high rate of neurovascular injury. Treatment of this ligamentous injury is controversial. The operative (repair of all ligaments) and nonoperative management of ligament injuries appears to result in a stiff knee (decreased range of motion [ROM]), and/or a significant incidence of clinical instability and pain.

Some psychological correlates of hemophilia.

Personality characteristics, as measured by the Personality Research Form (PRF-E) and a specially designed questionnaire, of 33 male hemophiliacs were investigated. Subjects were subdivided into three separate categories, bases on the severity of their clinical manifestations of the disease. Results showed that, as a whole, all scored within plus or minus one standard deviation of the mean on all PRF-E scales.

Gender roles and human sexuality.

Personality differences among three self-ascribed render-role types (predominantly masculine, predominantly feminine, or no predominant orientation) were investigated within a group of 128 male and female homosexuals. The results, utilizing the Adjective Check List (ACL) and a specially designed questionnaire placed all groups within +/- one standard deviation of the mean on all ACL scales except abasement. A multiple discriminant analysis demonstrated that 10 of the ACL scales significantly discriminated between self-ascribed gender-role types.

The effects of primary reward on the I.Q. performance of grade-school children as a function of initial I.Q. level.

The effect of candy reward on I.Q. scores was investigated in 72 first- and second-grade children.