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. 2019 Mar 11;20(1):14.
doi: 10.1186/s10195-019-0521-7.

Changes of and interrelationships between performance-based function and gait and patient-reported function 1 year after total hip arthroplasty

Josefine E Naili  1 , Margareta Hedström  2   3 , Eva W Broström  4
Affiliations

Changes of and interrelationships between performance-based function and gait and patient-reported function 1 year after total hip arthroplasty

Josefine E Naili et al. J Orthop Traumatol. .

Abstract

Background: The aim of this prospective study is to evaluate the degree of improvement in, and interrelationships between, performance-based function, gait, and patient-reported function 1 year after total hip arthroplasty (THA) in patients with primary hip osteoarthritis (OA).

Materials and methods: Thirty-four patients with hip OA, with a mean age of 67 years (standard deviation, SD 9 years), and 25 age- and gender-matched healthy controls performed three performance-based functional tests, instrumented three-dimensional gait analysis, and completed the Hip disability and Osteoarthritis Outcome Score prior to and 1 year after THA. Effect sizes with 95 % confidence intervals were calculated as measures of the magnitude of improvement in performance after surgery.

Results: Performance-based function displayed large improvements 1 year after THA. Overall gait patterns, quantified using a kinematic and a kinetic gait index, respectively, revealed moderate improvements in kinematics of the operated limb and kinetics of the contralateral limb. Patient-reported function displayed the largest improvement after surgery.

Conclusions: The findings of this study suggest that objectively measured improvements in performance-based function and gait are not in line with patient-reported functional improvements, highlighting the importance of using both subjective and objective methods for evaluating function following THA.

Level of evidence: III.

Keywords: Arthroplasty; Function; Gait; Hip; Mobility; Osteoarthritis; Performance.

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Figures

Fig. 1
Fig. 1
Flowchart of included study participants with hip osteoarthritis, test procedures, excluded individuals, and study participants completing the 1-year follow-up
Fig. 2
Fig. 2
Overall gait pattern, evaluated using the Gait Deviation Index for kinematics (GDI) and kinetics (GDI-kinetic), at baseline and at 1 year after total hip arthroplasty in (n = 34) patients with hip osteoarthritis. Patients grouped by postoperative change in performance-based function
Fig. 3
Fig. 3
Patient-reported function and pain, evaluated using the Hip disability and Osteoarthritis Outcome Score, at baseline and 1-year follow-up after total hip arthroplasty in (n = 34) patients with hip osteoarthritis. Patients grouped by postoperative change in performance-based function. ADL, activities of daily living; QoL, hip-related quality of life
See this image and copyright information in PMC

References

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