1. Orthopedic and Trauma Department, Veteran's Memorial Teaching Hospital in Lodz, Medical University of Lodz, Lodz, Poland.
2. Department of Anatomical Dissection and Donation, Medical University of Lodz, Lodz, Poland.
3. Artromedical Orthopaedic Clinic, Belchatow, Poland.
4. Twin Cities Orthopedics, Edina, Eagan, MN, USA.