Clinical Results of Hip Arthroplasty Using Medium-Viscosity Bone Cement Injected with Lampang Invented Cement Gun: Comparison between Bipolar Hemiarthroplasty and Total Hip Arthroplasty

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Phattanapong Palawong


Background: Cemented hip arthroplasty is usually performed using an injection gun and medium viscosity bone cement. A novel gun (Lampang cement gun for medium viscosity cement, LCG-MV) was developed at 20% of the cost of a commercial gun to accomplish this task.
Objective: To determine the clinical results of cemented hip arthroplasty using LCG-MV in terms of quality of cementation and functional outcome by comparing between bipolar hip hemiarthroplasty (BHA) and hybrid total hip arthroplasty (THA).
Material and method: A retrospective analytical study was conducted among 81 patients who underwent cemented hip arthroplasty in Lampang Hospital from January 2017 - December 2021 using medium-viscosity bone cement and delivery by LCG-MV. The patients were categorized into 2 groups; BHA and hybrid THA. Cementation quality was assessed by radiographic evaluation according to the Barrack grading system. The functional outcome was assessed using Harris Hip Score (HHS) at one-year postoperatively. Comparison between the two groups was evaluated using the t-test and exact probability test.
Results: The mean age of the patients was 77.6 years (SD 12.1, range 26-97). There were 62 cases receiving BHA and 19 cases receiving THA. Most of them were female (87.7%). The mean age of the BHA group was significantly higher than the THA group (81.8 (SD 6.7) vs 63.7 (SD 15.4) years, p<0.001). All cases in the BHA group sustained femoral neck fracture. Among the THA group, 52.6% of cases were diagnosed of secondary osteoarthritis and 42.1% were femoral neck fractures (p<0.001). Most of the hips demonstrated cementation quality in Barrack grade B (66.1% in BHA and 73.7% in THA groups) and grade A (21.0 % in BHA and 21.1% in THA groups, p=0.783). HHS in the THA group was significantly higher than the BHA group (89.1 (SD 6.1) vs 78.6 (SD 7.1), p<0.001). HHS in the excellent and good levels was found in 94.7% of cases in the THA group and 45.2% of cases in the BHA group (p<0.001).
Conclusion: Cemented hip arthroplasty using medium-viscosity bone cement and delivery by LCG-MV provided satisfactory clinical results. Optimal quality of cementation was shown in 87% to 95% of the cases. Most of the patients had HHS in the good to excellent levels. LCG-MV can help reduce expenditure and may be useful in resource-constrained hospitals.


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Palawong, P. . (2023). Clinical Results of Hip Arthroplasty Using Medium-Viscosity Bone Cement Injected with Lampang Invented Cement Gun: Comparison between Bipolar Hemiarthroplasty and Total Hip Arthroplasty. Lampang Medical Journal, 43(2), 80–87. Retrieved from
Original Article


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