Skeletal Manifestations of Osteogenesis Imperfecta.

The skeletal manifestations of osteogenesis imperfecta are investigated. The antenatal and postnatal diagnosis of the disease is briefly mentioned and the characteristic appearances of bone deformities are analyzed in detail. The distinctive bony manifestations of osteogenesis imperfecta are illustrated using typical examples. Finally, we comment on the differential diagnosis.

Sport injuries in the paediatric and adolescent patient: a growing problem.

With an increasing number of paediatric and adolescent athletes presenting with injuries due to overuse, a greater demand is put on clinicians and radiologists to assess the specific type of injury. Repetitive forces applied to the immature skeleton cause a different type of injury than those seen in adults due to the differences in vulnerability of the musculoskeletal system, especially at the site of the growth cartilage. Intrinsic and extrinsic risk factors all play a role in the development of overuse injuries. MRI plays a key role in imaging overuse injuries due to its high potential for depicting cartilaginous and soft-tissue structures. Sport-specific biomechanics are described, since this knowledge is essential for adequate MRI assessment. An overview of several sport-related injuries is presented, based on anatomical location.

Ultrasonography of symptomatic rotator cuff tears compared with MR imaging and surgery.

PURPOSE: To compare the accuracy of ultrasonography and magnetic resonance imaging in the detection of rotator cuff tears. MATERIALS AND METHODS: Ninety-six patients with clinically suspected rotator cuff pathology underwent ultrasonography and magnetic resonance imaging of the shoulder. The findings in 88 patients were compared with arthroscopy or open surgery. RESULTS: Full-thickness tear was confirmed in 57 cases, partial-thickness tear in 30 cases and degenerative changes without tear in 1. In all 57 cases of full-thickness tear and in 28 out of 30 cases of partial-thickness tear the supraspinatus tendon was involved. The accuracy in the detection of full-thickness tears was 98 and 100% for ultrasonography and magnetic resonance imaging, respectively. The accuracy in the detection of bursal or articular partial-thickness tears was 87 and 90% for ultrasonography and magnetic resonance imaging, respectively. CONCLUSIONS: In experienced hands ultrasonography should be considered as an accurate modality for the initial investigation of rotator cuff, especially supraspinatus, tears.