Don't throw away the austin moore

Unipolar versus bipolar hemiarthroplasty for displaced femoral neck fractures: A pooled analysis of 30,250 participants data

“…Whether unipolar or bipolar hemiarthroplasty should be preferred is unknown. Several RCTs and observational studies comparing unipolar versus bipolar hemiarthroplasty reported on outcomes after hip hemiarthroplasty 2,4,5,[14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29]31,32,[34][35][36][37][38][39][40][41] . There is no evidence supporting the choice between unipolar or bipolar femoral head prosthetic replacement.…”

“…Dislocations of prosthesis data was available for 19 studies (10 RCTs 5, [14][15][16][17][18][19]25,29,38 and 9 observational studies 20,26,27,32,34,36,37,39,40 Two observational studies reported data on loosening of prosthesis 24,27 . The pooled estimate (figure 9) showed no significant difference between the two compared groups…”

“…Wound infection data was provided by 13 studies (8 RCTs 5,14,[16][17][18]25,28,38 and 5 observational studies 20,24,34,36,40 Two RCTs reported on quality of life. Inngual et al 16 showed that the BH group has significantly higher quality of life over the UH group at 48 months' follow up using EQ-5D 16 .…”

“…and the UH groups in perioperative mortality (RR=1.17, 95% CI ]0.88, 1.56[, P=0.28).Pooled studies were homogenous (I2=0%, P=0.73).Four studies (2 RCTs5,25 and observational studies21,34 ) provided data for mortality at 6 months postoperatively. The pooled estimate did not favor either of the two groups (RR=1.00, 95% CI ]0.73, 1.35[, P=0.98).…”

Tribology of Hemiarthroplasty

“…wider motion range, better stability, longevity, and less impingements) compared to unipolar devices(V~zquez-Vela and V~zquez-Vela, 1990; Vazquez-Vela et al, 1990;Marcus et al, 1992;Gaine et al, 2000a;Ong et al, 2002;Cantu, 2004;Bhattacharyya and Koval, 2009). Due to the cartilage wear and the developed techniques in hip replacements, unipolar hemiarthroplasty is no longer used in the United States.…”