Solving hip and pelvis problems

The AnyBody Modeling System has been used to solve a range of problems related to hips: It has been used to quantify the risk of edge loading, evaluating the consequences of surgical procedures, and to answer many other questions related to hip arthroplasty.



  • Edge load quantification
  • Acetabular implant stability
  • Hip contact forces during gait
  • Physiological realistic loads for activities of daily living
  • Lumbar loads dependency on spinopelvic sagittal alignment
  • Hip surgery procedure influence on hip reaction forces
  • Realistic loads and motions for wear simulations


Examples of input and output for a total hip arthroplasty model:


  • Implants CAD files (STL)
  • Implant positioning data
  • Bone CAD files (STL)
  • Anthropometrics data
  • Motion data and ground reaction force


  • Implant contact forces (accounting for muscles)
  • Muscle and ligament forces
  • And much more

Contact us to learn more or to discuss how we could solve your problem

The steps to model this can be the following

  1. Reproduce the activity, e.g. walking, using your own data or an existing AnyBody model
  2. Custom scale the related bones using built-in morphing techniques (AnyFunTransForm3D)
  3. Run the inverse dynamic model (AnyBodyStudy)
  4. Evaluate the output: joint reaction forces, muscles, and ligament forces


Selected papers

  • De Pieri E, Cip J, Brunner R, Weidensteiner C, Alexander N, (2022), “The functional role of hip muscles during gait in patients with increased femoral anteversion”. Gait Posture, [ DOIWWW ]
  • De Pieri E, Friesenbichler B, List R, Monn S, Casartelli NC, Leunig M, Ferguson SJ (2021), “Subject-Specific Modeling of Femoral Torsion Influences the Prediction of Hip Loading During Gait in Asymptomatic Adults“, Front Bioeng Biotechnol, vol. 9, pp. 679360. [DOI]
  • Lunn DE, De Pieri E, Chapman GJ, Lund ME, Redmond AC, Ferguson SJ (2019), “Current Preclinical Testing of New Hip Arthroplasty Technologies Does Not Reflect Real-World Loadings: Capturing Patient-Specific and Activity-Related Variation in Hip Contact Forces“, J. Arthroplasty, vol. 0. [DOI]
  • Mellon SJ, Grammatopoulos G, Andersen MS, Pandit HG, Gill HS, Murray DW (2015), “Optimal acetabular component orientation estimated using edge-loading and impingement risk in patients with metal-on-metal hip resurfacing arthroplasty“, J. Biomech., vol. 48, pp. 318-323. [DOI]
  • Fischer MCM, Eschweiler J, Schick F, Asseln M, Damm P, Radermacher K (2018), “Patientspecific musculoskeletal modeling of the hip joint for preoperative planning of total hip arthroplasty: A validation study based on in vivo measurements“, PLoS One, vol. 13, pp. e0195376. [DOI]
  • More papers on orthopedics