INTRODUCTION: Problems with the initial fixation strength and widening of the femoral and tibial canal after ACL reconstruction using a triple or quadruple semitendinosus autograft have led to the introduction of the so-called Hybrid fixation with the additional use of interference screws. Pain and intraarticular migration have been reported with metal interference screws requiring implant removal (Am J Knee Surg 11:32-34, 2000, Arthroscopy 11:289-291, 1995) but not yet with bioabsorbable screws. MATERIALS AND METHODS: We report on two cases were the intraarticular position of a bioabsorbable interference screw possibly due to migration in the early postoperative period lead to symptoms, the need for further surgery, and implant removal. RESULTS: A preoperative MRI revealed the diagnosis. After removal of the tibial interference screw both knees were settling down, albeit with residual instability and only a moderate clinical result. DISCUSSION: Despite the attractiveness of bioabsorbable screws due to the very fact that they are being reabsorbed over time, there is a slight risk of migration in the first month after the operation. In any suspicious case an MRI will easily clarify the diagnosis.
INTRODUCTION: Problems with the initial fixation strength and widening of the femoral and tibial canal after ACL reconstruction using a triple or quadruple semitendinosus autograft have led to the introduction of the so-called Hybrid fixation with the additional use of interference screws. Pain and intraarticular migration have been reported with metal interference screws requiring implant removal (Am J Knee Surg 11:32-34, 2000, Arthroscopy 11:289-291, 1995) but not yet with bioabsorbable screws. MATERIALS AND METHODS: We report on two cases were the intraarticular position of a bioabsorbable interference screw possibly due to migration in the early postoperative period lead to symptoms, the need for further surgery, and implant removal. RESULTS: A preoperative MRI revealed the diagnosis. After removal of the tibial interference screw both knees were settling down, albeit with residual instability and only a moderate clinical result. DISCUSSION: Despite the attractiveness of bioabsorbable screws due to the very fact that they are being reabsorbed over time, there is a slight risk of migration in the first month after the operation. In any suspicious case an MRI will easily clarify the diagnosis.
Authors: R Siebold; H Thierjung; K Cafaltzis; E Hoeschele; J Tao; T Ellert Journal: Knee Surg Sports Traumatol Arthrosc Date: 2007-12-08 Impact factor: 4.342
Authors: Anagha P Parkar; Miraude E A M P Adriaensen; Torbjørn Strand; Eivind Inderhaug; Thomas Harlem; Eirik Solheim Journal: Skeletal Radiol Date: 2013-07-16 Impact factor: 2.199
Authors: Hélder Pereira; Hélder M D Pereira; Vítor M Correlo; Joana Silva-Correia; Joaquim M Oliveira; Rui L Reis; Rui L Reis Ceng; João Espregueira-Mendes Journal: Knee Surg Sports Traumatol Arthrosc Date: 2013-02-03 Impact factor: 4.342
Authors: Marco Ezechieli; Max Ettinger; Carolin König; Andreas Weizbauer; Patrick Helmecke; Robert Schavan; Arne Lucas; Henning Windhagen; Christoph Becher Journal: Knee Surg Sports Traumatol Arthrosc Date: 2014-09-24 Impact factor: 4.342