Radiological Outcomes Following Total Hip Replacement: A Prospective Evaluation of Implant Stability and Osteointegration

Background: Total hip replacement (THR) is a highly successful reconstructive procedure for the management of end-stage hip disorders. While clinical outcomes following THR are well documented, radiological assessment remains essential for evaluating implant positioning, osteointegration, component stability, and early postoperative complications. However, data regarding radiological outcomes following THR in rural and tribal populations of central India remain limited.

Objective: To evaluate the radiological outcomes, implant stability, and osteointegration following total hip replacement through serial postoperative radiographic assessment.

Methods: A prospective observational study was conducted in the Department of Orthopaedics, Raipur Institute of Medical Sciences, Raipur, Chhattisgarh, India, over a period of 18 months. Seventy-nine patients undergoing primary THR for end-stage hip pathology were included. Standardized anteroposterior radiographs of the pelvis and operated hip were obtained preoperatively, immediately postoperatively, at 3 months, and at 6 months. Acetabular component assessment was performed using the DeLee and Charnley classification, while femoral component evaluation was based on the Gruen zonal system. Radiographs were analyzed for implant stability, osteointegration, radiolucent lines, component migration, loosening, and osteolysis.

Results: A total of 79 patients were included in the study, with a mean age of 44.16 ± 13.85 years; 61 (77.2%) were males and 18 (22.8%) were females. Serial radiographic evaluation demonstrated satisfactory implant positioning and stability in the majority of patients throughout the follow-up period. Radiolucent lines were observed in DeLee and Charnley Zone III in 5 patients (6.3%) and in Gruen Zone IV in 6 patients (7.5%). No radiolucencies were detected in DeLee and Charnley Zones I and II. There were no cases of component migration, stem subsidence, acetabular or femoral component loosening, or osteolysis during the six-month follow-up period. Stable implant fixation was observed in 74 patients (93.7%), and radiographic findings were consistent with satisfactory osteointegration and biological fixation.

Conclusion: Total hip replacement demonstrated excellent short-term radiological outcomes, with favorable implant positioning, successful osteointegration, and a high rate of implant stability. The limited radiolucencies observed were not associated with implant failure or clinical instability. These findings support the effectiveness of THR in achieving reliable early radiological outcomes in patients from rural and tribal populations and highlight the value of serial radiographic assessment in postoperative surveillance.