TY - JOUR AU - Spahn, Gunter AU - Klinger, Hans Michael AU - Mückley, Thomas AU - Hofmann, Gunther DO - doi:10.1302/0301-620X.93BSUPP_II.0930091a UR - https://doi.org/10.1302/0301-620X.93BSUPP_II.0930091a TI - FOUR-YEAR RESULTS FROM A RANDOMIZED CONTROLLED STUDY OF KNEE CHONDROPLASTY. (MECHANIC DEBRIDEMENT VERSUS RADIOFREQUENCY CHONDROPLASTY) T2 - Orthopaedic Proceedings VL - 93-B IS - SUPP_II PY - 2011 SP - 91 EP - 91 ER -