Evaluation of extreme hip joint movement after total hip arthroplasty: A retrospective study

Abstract

BACKGROUND: The number of total hip arthroplasty (THA) is increased every year in our country. Mobility of the hip joint after THA is important to achieve. Subject’s expectation to perform daily activity, moreover extreme hip movement is crucial for some particular populations. AIM: This study aimed to evaluate patient’s functional outcome and ability to perform extreme hip joint movement. METHODS: This is a retrospective study of patients who received total hip arthroplasty in our center. Evaluated factors include age, gender, body mass index (BMI), socio-economic status, diagnosis, physical therapy, radiographic acetabular inclination, acetabular cup diameter, and head diameter. Clinical evaluation was performed with Harris hip score (HHS). Extreme hip joint movement evaluation was performed with patient’s ability to perform squatting and Salat (Muslim prayer). The Chi-square and Mann-Whitney tests were used for data analysis. RESULTS: We collected data from a total of 22 subjects. All patients (100%) could perform squatting postoperatively. Among the subjects, there were 11 patients (11/22, 50%) could perform Salat activity in excellent manner, while the rest (11 patients) need some modification of movement during Salat activity. All patients have significant improvement of HHS compared to preoperative condition. Further, we tried to compare factors between the two groups for possible difference. No significant difference in age, gender, BMI, comorbidities, preoperative diagnosis between two groups of patients. CONCLUSION: Subject receiving THA can be expected to perform extreme hip joint movement post-operatively. However, some patients still could not perform Salat activity in excellent manner. Age, gender, BMI, and comorbidities seem to be had no effect on the patient’s ability to perform extreme hip movement post-operatively. Further study is needed to more understand causal factors associated with patient’s ability in performing extreme hip joint movement.