A new mechanical testing device for measuring anteroposterior knee laxity.

Background: The authors assessed a new instrument, the Rolimeter, for the measurement of anteroposterior translation in the knee; it was compared to the KT-1000 arthrometer.

Purpose: To determine if the Rolimeter offers a valid method for the measurement of anteroposterior translation that is as reproducible and reliable as the KT-1000 arthrometer.

Methods: Two of 3 observers examined 16 normal subjects (32 knees) and 36 patients (72 knees) with ligament ruptures twice, using both the Rolimeter and the KT-1000 arthrometers, 30 minutes apart.

Hemiarthroplasty for severe fractures of the proximal humerus.

Twenty-two patients were followed up at a mean of 33 months after hemiarthroplasty for proximal humeral fractures. Of these, 13 underwent surgery within 30 days of injury and 9 after a mean of 13 months. Outcome was assessed by pain, range of motion, function, stability, and strength.