Category: P

The bone lamella next to and parallel with the periosteum, forming the external portion of bone.  

Abnormally slow progress of the latent phase, lasting more than 20 hr in a nullipara or 14 hr in a multipara.  

Abnormally slow progress of labor, lasting more than 20 hr.  

The initial changes that precede actual labor, usually occurring 24 to 48 hr before the onset of labor. Some women report a surge of energy. Findings include lightening, excessive mucoid vaginal discharge, softening and beginning effacement of the ripe cervix, scant bloody show associated with expulsion of the mucus plug, and diarrhea.  

Abnormally slow dilation of the cervix in the active phase of labor; defined as less than 1.2 cm/hr in a nullipara and 1.5 cm/hr in a multipara.  

Labor marked by sudden onset, rapid cervical effacement and dilation, and delivery within 3 hr of onset.  

A stout knife used for cutting and trimming plaster study models in dental practice.  

A surgical knife with a scaler-shaped blade whose entire perimeter is a cutting edge. It is used in gingivectomy and other periodontal surgery.  

The ligamentous, capsular, and muscular structures that stabilize the knee against varus, external rotation, and anterior/ posterior forces. Disruption of these structures can result in posterolateral rotary instability of the knee.  

Keratopathy occurring after cataract surgery; more common after placement of an anterior chamber lens. An uncomfortable enlargement of the cornea that occasionally occurs following surgery to replace a cataract-affected lens with an artificial lens.