Tantalum RSA Literature

Joint Stability Studies


  1. Ahl T, Dalén N, Lundberg A, Selvik G. Mobility of the ankle mortise. A roentgen- stereophotogrammetric analysis. Acta Orthop Scand 1987;58(4):401-2.
  2. Kärrholm J, Hansson LI, Selvik G. Mobility of the lateral malleolus. A roentgen stereophotogrammetric analysis. Acta Orthop Scand 1985;56(6):479-83
  3. Löfvenberg R, Kärrholm J, Selvik G, Hansson LI, Ahlgren O. Chronic lateral instability of the talocrural joint. Acta Orthop Scand 1989;60(1):34-9
  4. Löfvenberg R, Kärrholm J, Selvik G. Fibular mobility in chronic lateral instability of the ankle. J Foot & Ankle 1990;11(1):22-29.
  5. Löfvenberg R, Kärrholm J, Lundberg A. Subtalar stability in chronic lateral instability of the ankle. The Foot. 1992;2:39-43.
  6. Löfvenberg R, Kärrholm J. The influence of an ankle orthosis on the talar and calcaneal motions in chronic lateral instability of the ankle. Am J Sports Med.. 1993;21(2):224-30.
  7. Löfvenberg R, Kärrholm J, Lundberg A. Subtalar stability in chronic lateral instability of the ankle. The Foot. 1992;2:39-43.
  8. Löfvenberg R, Kärrholm J, Ahlgren O. Ankle stability in patients operated for chronic lateral instability. Five year follow-up study using roentgen stereophotogrammetric analysis. Acta Orthop Scand. 1994;65(4):401-407.


  1. Almquist PO, Arnbjörnsson A, Zätterstrom R, Ryd L, Ekdahl C, Friden T. Evaluation of an external device measuring knee joint rotation: an in vivo study with simultaneous Roentgen stereometric analysis. J Orthop Res. 2002 May;20(3):427-32.
  2. Edixhoven P H, Huiskes R, deGraaf R, vanRens Th J G, Sloot T J. Accuracy and reproducibility of instrumented knee-drawer tests. J Orthop Res. 1987;5:378-387.
  3. Fleming BC, Peura GD, Abate JA, Beynnon BD. Accuracy and repeatability of Roentgen stereophotogrammetric analysis (RSA) for measuring knee laxity in longitudinal studies. J Biomech. 2001 Oct;34(10):1355-9.
  4. Fridén T, Ryd L, Lindstrand A. Laxity and graft fixation after reconstruction of the anterior cruciate ligament. A roentgen stereophotogrammetric analysis of 11 patients. Acta Orthop Scand 1992;63(1):80-4.
  5. Fridén T, Sommerlat C, Egund N, Gillquist J, Ryd L,Lindstrand A. Measured laxity of the knee. Measurements of sagittal laxity compared in 11 cases. Acta Orthop Scand 1992;63(6):593-598.
  6. Jonsson H, Kärrholm J. Brace effects on the unstable knee in 21 cases. A roentgen stereophotogrammetric comparison of three designs. Acta Orthop Scand 1990;(61):313-318
  7. Jonsson H, Elmqvist L-G, Kärrholm J, Fugl-Meyer A. Lengthening of anterior cruciate ligament graft. Roentgen stereophotogrammetry of 32 cases 2 years after repair. Acta Orthop Scand. 1992;63 (6):587-592.
  8. Jonsson H, Kärrholm J, Elmqvist L-G. Measurement of knee laxity. Comparison between KT-1000 and roentgen stereophotogrammtry. Acta Orthop Scand. 1993;64:567-70.
  9. Jonsson H, Kärrholm J. Three-dimensional knee joint movements during a step-up. Evaluation after anterior cruciate ligament rupture. J Orthop Res. 1994;12:769-79
  10. Jonsson H, Elmqvist LG, Kärrholm J, Tegner Y. Over-the top or tunnel reconstruction of the anterior cruciate ligament. A prospective randomised study of 54 cases. J Bone Joint Surg (Br) 1994;76-B:82-7.
  11. Jonsson H, Kärrholm J. Three-dimensional knee kinematics and stability in patients with a posterior cruciate ligament tear. J Orthop Res. J Orthop. Res. 1999;17(2):185-91ax
  12. Jorn LP, Fridén T, Ryd L, Lindstrand A. Simultaneous measurements of sagittal knee laxity with an external device and radiostereometric analysis. J Bone Joint Surg (Br) 1998;80-B:169-172.
  13. Kärrholm J, Selvik G, Elmqvist L-G, Hansson LI, Jonsson H. Three-dimensional instability of the anterior cruciate deficient knee. J Bone Joint Surg (Br) 1988:70;777-83
  14. Kärrholm J, Elmqvist LG, Hansson LI, Selvik G. Chronic anterolateral instability of the knee. A roentgen stereophotogrammetric evaluation. Am J Sports Med 1989;17(4):555-563.
X-ray Markers suitable for RSA or Radio Stereometric Analysis and insertion into e.g. PEEK materials

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