This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Research article
Stefanie John
Otto von Guericke Universitat Magdeburg Fakultat fur Humanwissenschaften
Corresponding Author
ORCiD: https://orcid.org/0000-0001-6722-7195
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Backgroundː
Total hip arthroplasty (THA) is a successful method to reduce pain in end-stage hip osteoarthritis (OA) patients. If the pre-operatively existing deficits in the affected limb are persisting years after THA has not been thoroughly researched. Therefore, the aim of the study was to investigate potential side-to-side differences in long-time THA patients.
Methodsː
Sixteen patients (age: 65.20 ± 5.32 years), who had undergone unilateral THA four to five years ago and ten, healthy, age-matched controls (age = 60.85 ± 7.57 years) were examined for maximum isometric hip muscle strength, range of motion (ROM) of the hip joint, balance and gait on both limbs. Paired t-testes were used to assess the inter-limb differences in THA patients and controls and unpaired t-tests were applied to investigate differences between the two groups.
Resultsː
In THA patients, significant deficits on the operated side were found for the center of pressure (COP) length, hip abduction torque and ROM of hip extension with small to medium effects. Compared to the controls, THA patients demonstrated highly significantly reduced hip strength in flexion, extension, abduction and adduction as well as limited ROM in hip flexion and abduction.
Conclusionsː
A few side-to-side difference were present in THA patients four to five years after the surgery, although the general hip muscle weakness and restricted hip ROM compared to the controls was more severe. Postoperative training focusing on strengthening hip muscles should be continued months and years after the surgery in order to compensate persisting deficits.
Trial registrationː
DRKS, DRKS00016945. Registered 12 March 2019 – Retrospectively registered, http://www.drks.de/DRKS00016945
Keywords
Gait, muscle strength, range of motion, balance, total hip arthroplasty
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This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Research article
Stefanie John
Otto von Guericke Universitat Magdeburg Fakultat fur Humanwissenschaften
Corresponding Author
ORCiD: https://orcid.org/0000-0001-6722-7195
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
History
CURRENT STATUS: Posted
The most recent version of this article is available here.
No community comments so far
No comments provided
Version 1
Posted 01 May, 2020
No comments provided
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
The most recent version of this article is available here.
Backgroundː
Total hip arthroplasty (THA) is a successful method to reduce pain in end-stage hip osteoarthritis (OA) patients. If the pre-operatively existing deficits in the affected limb are persisting years after THA has not been thoroughly researched. Therefore, the aim of the study was to investigate potential side-to-side differences in long-time THA patients.
Methodsː
Sixteen patients (age: 65.20 ± 5.32 years), who had undergone unilateral THA four to five years ago and ten, healthy, age-matched controls (age = 60.85 ± 7.57 years) were examined for maximum isometric hip muscle strength, range of motion (ROM) of the hip joint, balance and gait on both limbs. Paired t-testes were used to assess the inter-limb differences in THA patients and controls and unpaired t-tests were applied to investigate differences between the two groups.
Resultsː
In THA patients, significant deficits on the operated side were found for the center of pressure (COP) length, hip abduction torque and ROM of hip extension with small to medium effects. Compared to the controls, THA patients demonstrated highly significantly reduced hip strength in flexion, extension, abduction and adduction as well as limited ROM in hip flexion and abduction.
Conclusionsː
A few side-to-side difference were present in THA patients four to five years after the surgery, although the general hip muscle weakness and restricted hip ROM compared to the controls was more severe. Postoperative training focusing on strengthening hip muscles should be continued months and years after the surgery in order to compensate persisting deficits.
Trial registrationː
DRKS, DRKS00016945. Registered 12 March 2019 – Retrospectively registered, http://www.drks.de/DRKS00016945
Figure 1
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