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Influence of Total Knee Arthroplasty on Hip Rotational Range of Motion
- Source :
- Journal of Nippon Medical School = Nippon Ika Daigaku zasshi. 87(4)
- Publication Year :
- 2020
-
Abstract
- Background Total knee arthroplasty (TKA) aims to correct the rotation, as well as the alignment and articulation, of the osteoarthritic knee. We hypothesized that, in addition to improving knee kinematics, TKA affects hip rotational movement. The objective of this study was to evaluate variation in lower extremity alignment and hip rotational range of motion (ROM) after TKA. Methods A total of 47 patients (53 knees) with primary varus knee osteoarthritis who were scheduled for primary TKA at our center were enrolled. Hip rotational ROM was measured with the patient in supine position with 90° flexion of the hip and knee before and 3 weeks after TKA. Plain radiography and computed tomography were used to compare variations in tibial axis alignment and femoral axis alignment after bone resection, which was defined as changes in the joint lines of the distal femur and the proximal tibia. Results Average internal ROM, and the sum of internal and external hip rotational ROM, increased significantly; however, external hip rotational ROM did not significantly differ after TKA. Imaging findings showed that the axis of the lower leg externally rotated by 2.5°, with a 4° internal rotation of the distal femur and a 6.5° correction of the varus deformity. Conclusion TKA changed the neutral position of hip rotational movement and increased hip rotational ROM.
- Subjects :
- musculoskeletal diseases
Male
Supine position
education
Total knee arthroplasty
Osteoarthritis
Resection
03 medical and health sciences
0302 clinical medicine
medicine
Humans
Femur
Range of Motion, Articular
Arthroplasty, Replacement, Knee
Aged
Varus deformity
Orthodontics
Aged, 80 and over
Hip
Tibia
business.industry
General Medicine
Middle Aged
Osteoarthritis, Knee
musculoskeletal system
medicine.disease
Neutral position
surgical procedures, operative
Treatment Outcome
Plain radiography
030220 oncology & carcinogenesis
030211 gastroenterology & hepatology
Female
business
Range of motion
Subjects
Details
- ISSN :
- 13473409
- Volume :
- 87
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- Journal of Nippon Medical School = Nippon Ika Daigaku zasshi
- Accession number :
- edsair.doi.dedup.....79eb93296e0b171590ae1deb9cb162d8