Radiology MOC

Abstract  Radiofrequency ablation (RFA) has become a valuable therapeutic modality in cancer treatment over the last decade. In orthopedic surgery, RFA is used for the treatment of benign bone tumors and bone metastases. Complications are rare and, to our knowledge, bone fracture as a complication due solely to RFA has not been reported to date. In this report we describe two patients with a fracture in the calcar region of the femur as a complication of RFA treatment for bone malignancies. Since RFA is applied increasingly often, it is important to report this risk of fracture as a complication of treatment of lesions in the femoral calcar.

• Content Type Journal Article
• DOI 10.1007/s00256-010-1013-2
• Authors
  • Edwin F. Dierselhuis, Department of Orthopedic Surgery, University Medical Center Groningen, Postbus 30.001, 9700 Groningen, The Netherlands
  • Paul C. Jutte, Department of Orthopedic Surgery, University Medical Center Groningen, Postbus 30.001, 9700 Groningen, The Netherlands
  • Pepijn J. M. van der Eerden, Department of Radiology, University Medical Center Groningen, Groningen, The Netherlands
  • Albert J. H. Suurmeijer, Department of Pathology, University Medical Center Groningen, Groningen, The Netherlands
  • Sjoerd K. Bulstra, Department of Orthopedic Surgery, University Medical Center Groningen, Postbus 30.001, 9700 Groningen, The Netherlands

• Journal Skeletal Radiology
• Online ISSN 1432-2161
• Print ISSN 0364-2348

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Erratum to: 17th Annual Congress of the European Society of Musculoskeletal Radiology (ESSR), Lille, France – June 17–19, 2010

• Content Type Journal Article
• DOI 10.1007/s00256-010-1003-4
• Authors
  • V. Vasilevska, University Surgical Clinic Ss. Naum Ohridski, Skopje, Rep. of Macedonia
  • U. Szeimies, Radiology in Muenchen Harlaching, Orthopedic Clinic Harlaching, Munich, Germany
  • E. M. Ruttner, Radiology in Muenchen Harlaching, Orthopedic Clinic Harlaching, Munich, Germany
  • A. Stäbler, Radiology in Muenchen Harlaching, Orthopedic Clinic Harlaching, Munich, Germany

• Journal Skeletal Radiology
• Online ISSN 1432-2161
• Print ISSN 0364-2348

Abstract Objective  To determine the number of participants required in controlled clinical trials investigating the progression of osteoarthritis (OA) of the hip as evaluated by the joint space width (JSW) on radiographs and to evaluate the reproducibility of the JSW measurement methods. Materials and methods  Anteroposterior radiographs of hip were taken from 13 healthy volunteers and from 18 subjects with radiographic hip OA. The reproducibility of the JSW was determined from four segments using digital caliper measurements performed on film radiographs and using semiautomatic computerized image analysis of digitized images. Pearson correlation coefficient, coefficient of variability [CV (%)], and sample size values were calculated. Results  It was found that 20 was a typical number of patients for a sufficiently powered study. The highest sample size was found in subjects with OA in the lateral segment. The reproducibility of the semiautomatic computerized method was not significantly better than the digital caliper method. Conclusion  The number of study subjects required to detect a significant joint space narrowing in follow-up studies is influenced by the baseline hip joint OA severity. The JSW measurements with computerized image analysis did not improve the reproducibility and thus performing JSW measurements with a digital caliper is acceptable.

• Content Type Journal Article
• DOI 10.1007/s00256-010-1016-z
• Authors
  • Petri Sipola, Department of Clinical Radiology, Kuopio University Hospital, PO Box 1777, 70211 Kuopio, Finland
  • Lea H. Niemitukia, Department of Clinical Radiology, Kuopio University Hospital, PO Box 1777, 70211 Kuopio, Finland
  • Mika M. Hyttinen, Institute of Biomedicine, Anatomy, University of Eastern Finland, Kuopio, Finland
  • Jari P. A. Arokoski, Department of Physical and Rehabilitation Medicine, Kuopio University Hospital, Kuopio, Finland

• Journal Skeletal Radiology
• Online ISSN 1432-2161
• Print ISSN 0364-2348

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