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Persistent knee flexor strength deficits identified through the NordBord eccentric test not seen with “gold standard” isokinetic concentric testing during the first year after anterior cruciate ligament reconstruction with a hamstring tendon autograft
Sportrehab Sports Medicine Clinic, Gothenburg, Sweden; Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Sahlgrenska Sports Medicine Center, Gothenburg, Sweden.
IFK-kliniken Rehab, Gothenburg, Sweden.
Sportrehab Sports Medicine Clinic, Gothenburg, Sweden; Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Sahlgrenska Sports Medicine Center, Gothenburg, Sweden.
Halmstad University, School of Business, Innovation and Sustainability. Sportrehab Sports Medicine Clinic, Gothenburg, Sweden; Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
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2022 (English)In: Physical Therapy in Sport, ISSN 1466-853X, E-ISSN 1873-1600, Vol. 55, p. 119-124Article in journal (Refereed) Published
Abstract [en]

Objective: To investigate the recovery of knee flexor muscle strength evaluated with a Nordic hamstring eccentric test (NordBord) compared with an isokinetic concentric test (Biodex) during the first year after anterior cruciate ligament (ACL) reconstruction using a hamstring tendon autograft.

Design: Prospective observational registry study; level of evidence, 3.

Setting: Primary care.

Participants: Cross-sectional data of 127 patients (45% women, mean age 24.9 ± 8.1 years) were extracted from a rehabilitation outcome registry at 10 weeks and 4, 8 and 12 months after ACL reconstruction with hamstring tendon autograft.

Main outcome measures: All patients performed a concentric Biodex test, and an eccentric NordBord test on the same occasion or within seven days of the concentric test. The primary outcome was the limb symmetry index between the respective tests.

Results: A greater knee flexor symmetry deficit was observed with the eccentric test compared with the concentric test at all follow-ups with clinically relevant differences at 4 (11.8% ± 12.7% [CI 7.8–15.8%]) and 8 months (13.4 ± 11.9 [CI 9.7–17.2%].

Conclusion: The eccentric NordBord test was able to identify clinically relevant deficits in knee flexor strength symmetry that were not identified by gold standard isokinetic concentric testing during the first year among patients treated with an ACL reconstruction using a hamstring tendon autograft. © 2022 The Authors

Place, publisher, year, edition, pages
Oxford: Elsevier, 2022. Vol. 55, p. 119-124
Keywords [en]
Evaluation, Knee injury, Limb symmetry index, Nordic hamstring
National Category
Surgery
Identifiers
URN: urn:nbn:se:hh:diva-46743DOI: 10.1016/j.ptsp.2022.03.004ISI: 000792877000015PubMedID: 35339867Scopus ID: 2-s2.0-85126976110OAI: oai:DiVA.org:hh-46743DiVA, id: diva2:1656621
Note

Funding: The study was funded by grants from the Local Research and Development Board for Gothenburg and Södra Bohuslän (VGFOUGSB-964590).

Available from: 2022-05-06 Created: 2022-05-06 Last updated: 2023-08-21Bibliographically approved

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Wernbom, Mathias

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