Use of Lampang Cement Gun for Unipolar Hemiarthroplasty In Elderly Patients With Femoral Neck Fracture

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Anuwat Pongkunakorn
Phornphinit Thisayukta


Background : Cemented unipolar hemiarthroplasty is the common treatment of femoral neck fracture in elderly patients. The authors had invented Lampang cement gun (LCG) from a caulking gun to improve cementing technique. There was no previous study about LCG in clinical use.
Objective : To evaluate the clinical result of using LCG for cemented unipolar hemiarthroplasty in elderly patients with fresh femoral neck fracture.
Material and method : A retrospective study was conducted on elderly patients who underwent cemented unipolar hemiarthroplasty (46 Austin Moore, 13 Thompson) in Lampang Hospital between October 2003 and January 2008. The femoral canal was occluded with bone plug, then was filled with cement by using LCG. Clinical outcome was assessed by Harris hip score (HHS). Radiographic quality of cement interdigitation was evaluated by modified Barrack’s score.
Results : There were 15 men and 44 women with the mean age of 78 years (range, 65-96). Eighteen patients died and two were lost to follow-up. Thirty-nine patients enrolled the study. The mean follow-up period was 36 months (range, 11-63). The mean HHS was 81.9 (range, 52-93). Excellent result was found in 15.4%, good 51.3%, fair 28.2% and poor in 5.1% of the patients. Dislocation and infection rate were 7.7% and 2.6% respectively. One patient had periprosthetic fracture and subsequent loosening. The mortality rate at 3, 6 and 12 months were 6.7%, 13.3% and 20% respectively.
Conclusion : The clinical result of using LCG for cemented unipolar hemiarthroplasty in elderly patients with femoral neck fracture was acceptable and safe. LCG could be used to improve cementing technique and save operative cost


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Pongkunakorn, A., & Thisayukta , P. (2022). Use of Lampang Cement Gun for Unipolar Hemiarthroplasty In Elderly Patients With Femoral Neck Fracture. Lampang Medical Journal, 30(1), 38–50. Retrieved from
Original Article


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