1. The radiological appearances of the fragments in 100 trochanteric fractures have been analysed. 2. A simple practical classification enables the correct method of reduction to be chosen. 3. In Type I fractures the proximal fragment consists of the head and neck alone. In Type II fractures the head, neck and a major part of the great trochanter constitute the proximal fragment. 4. The key role of the greater trochanter in influencing the displacement of the fragments is discussed. 5. For reduction, Type I fractures require rotation of the distal fragment to a neutral position. Type II fractures reduce in some degree of lateral rotation.
Although an osteosarcoma appears to be a solitary lesion clinically, as in this instance, only routine radiographic skeletal survey in such cases will detect multiple osseous involvement. Ross (1964) reported that in ninety-eight cases of osteosarcoma arising in apparently normal bone, fifteen showed metastases to other bones, a much higher incidence than previously recorded. It is also possible that multicentric osteosarcomata, although undoubtedly rare, may be discovered more often if a radiological survey is done. In many large series of osteosarcomata no mention of a skeletal survey has been made, and, while this is routine in some centres, it is not yet general practice.
