Association of COL1A2, COL2A1 and COL9A1 and primary osteoarthritis in a founder population.
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Collagen↗
Biomedical subjects
P Rockwood
Publications and source records attributed to P Rockwood.
Neer's classification system: a critical appraisal.
The purpose of this study was to examine the interobserver agreement using Neer's classification system for fractures of the proximal humerus. A preliminary series of 28 fractures of the proximal humerus admitted to the hospital over a 5-year retrospective period was independently assessed by two radiologists and two orthopedic surgeons. The degree of agreement between paired observations was determined using a kappa statistic. The observations were assessed according to the number of fracture segments, as well as site of fracture segment. Most of the patients assessed were multisegment tuberosity fractures (n = 18). Results showed that the overall agreement between pairs of observers was 65% (average kappa = 0.45). It was also shown that, within the tuberosity group, the percentage agreement was 50%, with an average kappa = 0.35, indicating only fair interobserver agreement. Clinical implications of these findings are such that, as major surgical decisions are made dependent on Neer's classification, closer evaluation techniques--such as the computerized tomography scan and magnetic resonance imaging--should be used to classify the fracture segments accurately. This is particularly true with the fractured tuberosity subgroup.
Adolescent↗
Elderly long-stay surgical patients.
This paper examines long hospital stays (more than 30 days) among 196 surgical patients over 65 years of age in two acute-care hospitals. Patients in the long-stay group--54 (28%) of the 196--were not demographically different from the others but showed a significantly (p less than 0.05) higher rate of cognitive impairment, dependence before admission and admission through the emergency department. Although these patients more often required catheterization and were nursed in bed or in "gerichairs", many were suitable for discharge to the community if appropriate accommodation could have been found.
Aged↗
Traumatic arteriovenous fistula of the scalp. Case report.
A case of an arteriovenous fistula resulting from an air-rifle pellet injury to the scalp is reported. Traumatic arteriovenous fistulas of the scalp are rare lesions. A suggested pathogenesis is a disruption of the arterial wall and its vasa vasorum with endothelial proliferation to adjacent veins. Classically, these fistulas are described as single channels, but more commonly they consist of multiple connections. Angiography is necessary to delineate the full extent of the lesions unless they are extremely small. Careful complete excision is the definitive management, as recurrences are common.
Adolescent↗