Aneurysmal bone cyst of the fibula.

Aneurysmal bone cysts are benign, expansile lesions that are not at all uncommon in the lower extremity. These lesions are difficult to recognize clinically. This paper is a thorough review of the current literature regarding aneurysmal bone cysts. After this review, one should be able to diagnose and appropriately treat aneurysmal bone cysts. Also provided is a case report with classic histologic, clinical, and radiographic findings that was treated by en bloc resection.

Reality check. Evaluating a school-based gang prevention model.

The Gang Resistance Education and Training (G.R.E.A.T.) program is a school-based gang prevention initiative developed in 1991 through the collaborative efforts of the Bureau of Alcohol, Tobacco, and Firearms, the Federal Law Enforcement Training Center, and the Phoenix Police Department. Uniformed law enforcement officers, certified as G.R.E.A.T. instructors, teach the 9-week curriculum to middle students. In 1994, the National Institute of Justice funded a national evaluation of the G.R.E.A.T. program. The process evaluation component of this larger study is reported. First, results of on-site observations of the G.R.E.A.T. Officer Training program, including an overview of the training activities, and the authors' assessment of the training process are reported. Second, observations of the implementation of the program by officers at six sites are reported. Of primary concern was whether the program delivered to students was similar to the program taught to the officers during the G.R.E.A.T. Officer Training.

Iatrogenic deformities of the first ray.

Surgical correction of a hallux valgus deformity is common among podiatric and orthopedic surgeons. Complications following hallux valgus surgery are not uncommon. Although many of these complications can be avoided by a comprehensive understanding of the pathomechanics of a hallux valgus deformity and continual honing o surgical skills, some are inevitable. This article provides a comprehensive overview and insight into the diagnosis and treatment of the more common complications encountered with hallux valgus surgery.

Chondroblastoma of the talus.

Chondroblastomas are rare cartilaginous tumors that are found in the foot or ankle. They are usually located in portions of the humerus, tibia, or femur, and comprise approximately 1 to 3% of all osseous tumors. This is a unique case report of a chondroblastoma involving the talus of a young individual.

Differential associations and definitions: a panel study of youthful drinking behavior.

This article reports on a test of selected elements of social learning theory, using a panel of public school students residing in a small southwestern city. Specifically, the drinking habits of 373 middle school and 282 high school students were examined at Time 1 and Time 2, as were changes in their attitudes, orientations, and patterns of drinking. We evaluated the assertions of social learning theory's proponents concerning its processual aspects. The results were largely consistent with the principles of social learning, although the drug-related messages conveyed by both parents and significant-other adults played only minor roles in the process for either group. We found support for the notion that the process of learning to drink is not uniform throughout the secondary school experience. The implications of these findings for social learning theory and drug intervention programs are addressed in this article.