Kristoffer Weisskirchner Barfod

Kristoffer Weisskirchner Barfod

Clinical Professor

Member of:

  • Orthopaedic Surgery


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  1. Published

    The heel-rise work test overestimates the performed work with 21–25% after an Achilles tendon rupture

    Andreasen, K. R., Hansen, M. S., Bencke, J., Hölmich, Per & Barfod, Kristoffer Weisskirchner, May 2021, In: Knee Surgery, Sports Traumatology, Arthroscopy. 29, 5, p. 1604-1611 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  2. Published

    Successful isolation of viable stem cells from cryopreserved microfragmented human adipose tissue from patients with knee osteoarthritis – a comparative study of isolation by tissue explant culture and enzymatic digestion

    Bagge, J., Hölmich, Per, Hammer, F. A., Nehlin, J. O., Vomstein, K., Blønd, L., Hølmich, Lisbet Rosenkrantz & Barfod, Kristoffer Weisskirchner, 2023, In: Journal of Experimental Orthopaedics. 10, 1, 13 p., 31.

    Research output: Contribution to journal › Journal article › Research › peer-review

  3. Published

    Neither operative nor nonoperative approach is superior for treating displaced midshaft clavicle fractures: a partially blinded randomized controlled clinical trial

    Ban, I., Kristensen, Morten Tange, Barfod, Kristoffer Weisskirchner, Eschen, J., Kallemose, T. & Troelsen, Anders, 2021, In: The Bone & Joint Journal. 103-B, 4, p. 762-768 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  4. Published

    Sub-chronic lung inflammation after airway exposures to Bacillus thuringiensis biopesticides in mice

    Barfod, Kristoffer Weisskirchner, Poulsen, Steen Seier, Hammer, M. & Larsen, S. T., 3 Sep 2010, In: B M C Microbiology. 10, p. 233 1 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  5. Published

    Behandling af knæartrose hos yngre voksne

    Barfod, Kristoffer Weisskirchner, Skou, S. T. & Troelsen, Anders, 2019, In: Ugeskrift for Laeger. 181, 5 p., V07180471.

    Research output: Contribution to journal › Journal article › Research › peer-review

  6. Published

    Lægens rolle i forbindelse med tilbagevenden til sport efter korsbåndsrekonstruktion

    Barfod, Kristoffer Weisskirchner, Rasmussen, R., Blaabjerg, B., Hölmich, Per & Lind, M., 2018, In: Ugeskrift for Laeger. 180, 26, 5 p., V11170846.

    Research output: Contribution to journal › Journal article › Research › peer-review

  7. Published

    Treatment of Acute Achilles Tendon Rupture in Scandinavia Does Not Adhere to Evidence-based Guidelines: A Cross-sectional Questionnaire-based Study of 138 Departments

    Barfod, Kristoffer Weisskirchner, Nielsen, F., Helander, K. N., Mattila, V. M., Tingby, O., Boesen, A. & Troelsen, Anders, 2013, In: Journal of Foot & Ankle Surgery. 52, 5, p. 629-633 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  8. Published

    Knee extensor strength and hop test performance following anterior cruciate ligament reconstruction

    Barfod, Kristoffer Weisskirchner, Feller, J. A., Hartwig, T., Devitt, B. M. & Webster, K. E., 2019, In: The Knee. 26, 1, p. 149-154

    Research output: Contribution to journal › Journal article › Research › peer-review

  9. Published

    Strength Testing After Anterior Cruciate Ligament Reconstruction: A Prospective Cohort Study Investigating Overlap of Tests

    Barfod, Kristoffer Weisskirchner, Feller, J. A., Clark, R., Hartwig, T., Devitt, B. M. & Webster, K. E., Nov 2019, In: Journal of Strength and Conditioning Research. 33, 11, p. 3145-3150

    Research output: Contribution to journal › Journal article › Research › peer-review

  10. Published

    Acute Achilles' Tendon Rupture - Surgery or No Surgery

    Barfod, Kristoffer Weisskirchner & Hölmich, Per, 14 Apr 2022, In: New England Journal of Medicine. 386, 15, p. 1465-1466 2 p.

    Research output: Contribution to journal › Editorial › Research › peer-review

  11. Published

    Effect of the Copenhagen Achilles Rupture Treatment Algorithm (CARTA) on Calf Muscle Volume and Tendon Elongation After Acute Achilles Tendon Rupture: A Predefined Secondary Analysis of the First 60 Patients in a Randomized Controlled Trial

    Barfod, Kristoffer Weisskirchner, Overgård, A. B., Hansen, M. S., Haddouchi, I. E., Toft, M. & Hölmich, Per, 2023, In: Orthopaedic Journal of Sports Medicine. 11, 11, 8 p., 23259671231211282.

    Research output: Contribution to journal › Journal article › Research › peer-review

  12. Published

    Risk of Deep Vein Thrombosis After Acute Achilles Tendon Rupture: A Secondary Analysis of a Randomized Controlled Trial Comparing Early Controlled Motion of the Ankle Versus Immobilization

    Barfod, Kristoffer Weisskirchner, Nielsen, E. G., Olsen, B. H., Vinicoff, P. G., Troelsen, Anders & Hölmich, Per, 2020, In: Orthopaedic Journal of Sports Medicine. 8, 4, 9 p., 2325967120915909.

    Research output: Contribution to journal › Journal article › Research › peer-review

  13. Published

    Severe Functional Debilitations After Complications Associated With Acute Achilles Tendon Rupture With 9 Years of Follow-Up

    Barfod, Kristoffer Weisskirchner, Sveen, T. M., Ganestam, A., Ebskov, L. B. & Troelsen, Anders, 2017, In: Journal of Foot and Ankle Surgery. 56, 3, p. 440-444 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  14. Published

    The Copenhagen Achilles Length Measurement Performed at Time of Acute Achilles Tendon Rupture is Correlated to Tendon Elongation After 1 Year

    Barfod, Kristoffer Weisskirchner, Hansen, M. S., Sandholdt, H., Boesen, A., Hölmich, Per, Troelsen, Anders & Kristensen, Morten Tange, 2022, In: Journal of Foot and Ankle Surgery. 61, 5, p. 1098-1102 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  15. Published

    Efficacy of early controlled motion of the ankle compared with immobilisation in non-operative treatment of patients with an acute Achilles tendon rupture: an assessor-blinded, randomised controlled trial

    Barfod, Kristoffer Weisskirchner, Hansen, M. S., Hölmich, Per, Kristensen, Morten Tange & Troelsen, Anders, 2020, In: British Journal of Sports Medicine. 54, 12, p. 719-724

    Research output: Contribution to journal › Journal article › Research › peer-review

  16. Published

    Ledbevarende kirurgi i hofte- og knæled og udviklingen af sekundær artrose

    Barfod, Kristoffer Weisskirchner, Viberg, B., Blønd, L. & Mygind-Klavsen, B., 2020, In: Ugeskrift for Laeger. 182, 42, 5 p., V04200262.

    Research output: Contribution to journal › Journal article › Research › peer-review

  17. Published

    Validation of a novel ultrasound measurement of achilles tendon length

    Barfod, Kristoffer Weisskirchner, Riecke, A. F., Boesen, A., Hansen, P., Maier, J. F., Døssing, S. & Troelsen, Anders, 1 Nov 2015, In: Knee Surgery, Sports Traumatology, Arthroscopy. 23, 11, p. 3398-3406 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  18. Published

    Validity and reliability of an ultrasound measurement of the free length of the Achilles tendon

    Barfod, Kristoffer Weisskirchner, Riecke, A. F., Boesen, A., Hansen, P., Maier, J. F., Doessing, S. & Troelsen, Anders, 2018, In: Danish Medical Journal. 65, 3, 5 p., A5453.

    Research output: Contribution to journal › Journal article › Research › peer-review

  19. Published

    Treatment of osteoarthritis with autologous and microfragmented adipose tissue

    Barfod, Kristoffer Weisskirchner & Blønd, L., 2019, In: Danish Medical Journal. 66, 10, 5 p., A5565.

    Research output: Contribution to journal › Journal article › Research › peer-review

  20. Published

    En aktiv befolkning er lig med en sund befolkning

    Barfod, Kristoffer Weisskirchner & Olesen, J. L., 2019, In: Ugeskrift for Laeger. 181, 2 p., V70420.

    Research output: Contribution to journal › Editorial › Research

  21. Published

    The critical shoulder angle is associated with osteoarthritis in the shoulder but not rotator cuff tears: a retrospective case-control study

    Bjarnison, A. O., Sørensen, T. J., Kallemose, T. & Barfod, Kristoffer Weisskirchner, 2017, In: Journal of Shoulder and Elbow Surgery. 26, 12, p. 2097-2102

    Research output: Contribution to journal › Journal article › Research › peer-review

  22. Published

    Trochlear Shape and Patient-Reported Outcomes After Arthroscopic Deepening Trochleoplasty and Medial Patellofemoral Ligament Reconstruction: A Retrospective Cohort Study Including MRI Assessments of the Trochlear Groove

    Blønd, L. & Barfod, Kristoffer Weisskirchner, 2023, In: Orthopaedic Journal of Sports Medicine. 11, 5, 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  23. Published

    Effect of Platelet-Rich Plasma on Nonsurgically Treated Acute Achilles Tendon Ruptures: A Randomized, Double-Blinded Prospective Study

    Boesen, A. P., Boesen, M. I., Hansen, R., Barfod, Kristoffer Weisskirchner, Lenskjold, A., Malliaras, P. & Langberg, Henning, 2020, In: American Journal of Sports Medicine. 48, 9, p. 2268-2276 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  24. Published

    The reliability, reproducibility and utilization of the radiographic Achilles Tendon Loading Angle in the management of Achilles Tendon rupture

    Carmont, M. R., Brorsson, A., Barfod, Kristoffer Weisskirchner, Ginder, L., Littlehales, J., Karlsson, J. & Nilsson-Helander, K., 2021, In: Foot and Ankle Surgery. 27, 7, p. 760-766 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  25. Published

    Involvement of Bacteria in the Pathological Changes Before Achilles Tendon Rupture: A Case Series Investigating 16S rDNA in 20 Consecutive Ruptures

    Cramer, A., Moser, Claus Ernst, Fritz, Blaine Gabriel, Hölmich, Per & Barfod, Kristoffer Weisskirchner, 2022, In: Orthopaedic Journal of Sports Medicine. 10, 8

    Research output: Contribution to journal › Journal article › Research › peer-review

  26. Published

    Outcome after acute Achilles tendon rupture is not negatively affected by female sex and age over 65 years

    Cramer, A., Jacobsen, N. C., Hansen, M. S., Sandholdt, H., Hölmich, Per & Barfod, Kristoffer Weisskirchner, 2020, In: Knee Surgery, Sports Traumatology, Arthroscopy. 28, 12, p. 3994-4002 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  27. Published

    Diabetes and treatment with orally administrated corticosteroids negatively affect treatment outcome at follow-up after acute Achilles tendon rupture

    Cramer, A., Jacobsen, N. C., Hansen, M. S., Sandholdt, H., Hölmich, Per & Barfod, Kristoffer Weisskirchner, May 2021, In: Knee Surgery, Sports Traumatology, Arthroscopy. 29, 5, p. 1584-1592 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  28. Published

    Completeness and data validity in the Danish Achilles tendon Database

    Cramer, A., Hansen, M. S., Sandholdt, H., Jones, P. K., Christensen, M., Jensen, S. M. L., Hölmich, Per & Barfod, Kristoffer Weisskirchner, 2019, In: Danish Medical Journal. 66, 6, 5 p., A5548.

    Research output: Contribution to journal › Journal article › Research › peer-review

  29. Published

    Genetic contribution to the etiology of Achilles tendon rupture. A Danish nationwide register study of twins

    Cramer, A., Barfod, Kristoffer Weisskirchner, Hölmich, Per, Pedersen, D. A. & Christensen, K., 2022, In: Foot and Ankle Surgery. 28, 7, p. 1050-1054

    Research output: Contribution to journal › Journal article › Research › peer-review

  30. Published

    Achilles Tendon Tissue Turnover Before and Immediately After an Acute Rupture

    Cramer, A., Højfeldt, Grith Stougaard, Schjerling, Peter, Agergaard, J., van Hall, Gerrit, Olsen, J., Hölmich, Per, Kjær, Michael & Barfod, Kristoffer Weisskirchner, 2023, In: American Journal of Sports Medicine. 51, 9, 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  31. Published

    Neither heel-rise Height (HRH) nor Achilles tendon resting angle (ATRA) show strong correlations to patient limitations and return to previous activities one year after acute Achilles tendon rupture

    Cramer, A., Hansen, M. S., Hölmich, Per & Barfod, Kristoffer Weisskirchner, 2022, In: Foot and Ankle Surgery. 28, 6, p. 795-799 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  32. Published

    No clinically relevant difference between operative and non-operative treatment in tendon elongation measured with the Achilles tendon resting angle (ATRA) 1 year after acute Achilles tendon rupture

    Cramer, A., Rahdi, E., Hansen, M. S., Sandholdt, H., Hölmich, Per & Barfod, Kristoffer Weisskirchner, May 2021, In: Knee Surgery, Sports Traumatology, Arthroscopy. 29, 5, p. 1617-1626 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  33. Published

    Estimation of Patient Acceptable Symptom State (PASS) and Treatment Failure (TF) Threshold Values for the Achilles Tendon Total Rupture Score (ATRS) at 6 Months, 1 Year, and 2 Years After Acute Achilles Tendon Rupture

    Cramer, A., Ingelsrud, L. H., Hansen, M. S., Hölmich, Per & Barfod, Kristoffer Weisskirchner, 2022, In: Journal of Foot and Ankle Surgery. 61, 3, p. 503-507

    Research output: Contribution to journal › Journal article › Research › peer-review

  34. Published

    Familial association and epidemilogical factors as risk factors for developing first time and recurrent patella dislocation: a systematic review and best knowledge synthesis of present literature

    Danielsen, O., Poulsen, T. A., Eysturoy, N. H., Mortensen, E. S., Hölmich, Per & Barfod, Kristoffer Weisskirchner, 2023, In: Knee Surgery, Sports Traumatology, Arthroscopy. 31, 9, p. 3701-3733 33 p.

    Research output: Contribution to journal › Review › Research › peer-review

  35. Published

    Trochlea dysplasia, increased TT-TG distance and patella alta are risk factors for developing first-time and recurrent patella dislocation: a systematic review

    Danielsen, O., Poulsen, T. A., Eysturoy, N. H., Mortensen, E. S., Hölmich, Per & Barfod, Kristoffer Weisskirchner, 2023, In: Knee Surgery, Sports Traumatology, Arthroscopy. 31, 9, p. 3806-3846 41 p.

    Research output: Contribution to journal › Review › Research › peer-review

  36. Published

    Effect of Early Versus Late Weightbearing in Conservatively Treated Acute Achilles Tendon Rupture: A Meta-Analysis

    El-Akkawi, A. I., Joanroy, R., Barfod, Kristoffer Weisskirchner, Kallemose, T., Kristensen, S. S. & Viberg, B., 2018, In: Journal of Foot & Ankle Surgery. 57, 2, p. 346-352

    Research output: Contribution to journal › Review › Research › peer-review

  37. Published

    Validity of sports-related diagnosis codes in the danish national patient register

    Gadeberg, M. N., Cramer, A., Hölmich, Per & Barfod, Kristoffer Weisskirchner, 2021, In: Danish Medical Journal. 68, 3, 6 p., A08200580.

    Research output: Contribution to journal › Journal article › Research › peer-review

  38. Published

    Validity and Reliability of the Achilles Tendon Total Rupture Score

    Ganestam, A., Barfod, Kristoffer Weisskirchner, Klit, J. & Troelsen, Anders, 2013, In: Journal of Foot & Ankle Surgery. 52, 6, p. 736-739 4 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  39. Published

    High incidence of acute and recurrent patellar dislocations: a retrospective nationwide epidemiological study involving 24.154 primary dislocations

    Gravesen, K. S., Kallemose, T., Blønd, L., Troelsen, Anders & Barfod, Kristoffer Weisskirchner, Apr 2018, In: Knee Surgery, Sports Traumatology, Arthroscopy. 26, 4, p. 1204–1209

    Research output: Contribution to journal › Journal article › Research › peer-review

  40. Published

    Persistent morbidity after Medial Patellofemoral Ligament Reconstruction: A registry study with an eight-year follow-up on a nationwide cohort from 1996 to 2014

    Gravesen, K. S., Kallemose, T., Blønd, L., Troelsen, Anders & Barfod, Kristoffer Weisskirchner, 2019, In: The Knee. 26, 1, p. 20-25

    Research output: Contribution to journal › Journal article › Research › peer-review

  41. Published

    Dansk akillessenedatabase - Kvalitetssikring, forskning og anbefalinger til træning efter akillesseneruptur

    Hansen, M. S. & Barfod, Kristoffer Weisskirchner, 2018, In: Dansk Sportsmedicin. 22, 2, p. 28-34

    Research output: Contribution to journal › Journal article › Research › peer-review

  42. Published

    Development and reliability of the Achilles Tendon Length Measure and comparison with the Achilles Tendon Resting Angle on patients with an Achilles tendon rupture

    Hansen, M. S., Barfod, Kristoffer Weisskirchner & Kristensen, M. T., 2017, In: Foot and Ankle Surgery. 23, 4, p. 275-280

    Research output: Contribution to journal › Journal article › Research › peer-review

  43. Published

    Individualized treatment for acute Achilles tendon rupture based on the Copenhagen Achilles Rupture Treatment Algorithm (CARTA): a study protocol for a multicenter randomized controlled trial

    Hansen, M. S., Vestermark, M. T., Hölmich, Per, Kristensen, Morten Tange & Barfod, Kristoffer Weisskirchner, 2020, In: Trials. 21, 14 p., 399.

    Research output: Contribution to journal › Journal article › Research › peer-review

  44. Published

    Achilles tendon gait dynamics after rupture: A three-armed randomized controlled trial comparing an individualized treatment algorithm vs. operative or non-operative treatment

    Hansen, M. S., Bencke, J., Kristensen, Morten Tange, Kallemose, T., Hölmich, Per & Barfod, Kristoffer Weisskirchner, 2023, In: Foot and Ankle Surgery. 29, 2, p. 143-150

    Research output: Contribution to journal › Journal article › Research › peer-review

  45. Published

    The Achilles Tendon Length Measure and the Achilles Tendon Resting Angle show acceptable construct validity using the Copenhagen Achilles Length Measure as gold standard

    Hansen, M. S., Kristensen, Morten Tange, Hölmich, Per & Barfod, Kristoffer Weisskirchner, 2021, In: Foot and Ankle Surgery. 27, 6, p. 655-659 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  46. Published

    Reliability of the Copenhagen Achilles length measure (CALM) on patients with an Achilles tendon rupture

    Hansen, M. S., Kristensen, Morten Tange, Budolfsen, T., Ellegaard, K., Hölmich, Per & Barfod, Kristoffer Weisskirchner, Jan 2020, In: Knee Surgery, Sports Traumatology, Arthroscopy. 28, 1, p. 281-290 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  47. Published

    Performance of the Achilles Tendon Total Rupture Score Over Time in a Large National Database: Development of an Instruction Manual for Accurate Use

    Hansen, M. S., Nilsson Helander, K., Karlsson, J. & Barfod, Kristoffer Weisskirchner, 2020, In: The American Journal of Sports Medicine. 48, 6, p. 1423-1429

    Research output: Contribution to journal › Journal article › Research › peer-review

  48. Published

    High tibial osteotomy performed with PEEK implant demonstrated a failure rate of 28%

    Hansen, M. I., Staghøj, J., Khan, N., Blønd, L. & Barfod, Kristoffer Weisskirchner, 1 Jan 2021, In: Journal of ISAKOS. 6, 1, p. 8-13 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  49. Published

    Rockwood type III is the most common type of acromioclavicular joint dislocation: A prospective cohort study investigating the incidence and epidemiology of acute acromioclavicular joint dislocations in an urban population

    Haugaard, K. B., Bak, K., Seem, K., Hölmich, Per & Barfod, Kristoffer Weisskirchner, 2023, In: Shoulder and Elbow. 15, 5, p. 505-512 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  50. Published

    Treatment outcome at 1 year did not differ between use of cast or walker in the first 3 weeks after an acute Achilles tendon rupture. A registry study of 1304 patients from the Danish Achilles tendon database

    Henriksen, G. J., Cramer, A., Hölmich, Per, Hansen, M. S., Hansen, J. K., Christensen, M. & Barfod, Kristoffer Weisskirchner, 2023, In: Foot and Ankle Surgery. 29, 1, p. 56-62 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

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