To compare the effects of patients with different degrees of Parkinson's disease (PD) who had femoral neck fracture and bipolar femoral head replacement.

A review of patients with femoral neck fracture combined with PD who underwent bipolar femoral head replacement in the orthopedics department of Kaizhou District Traditional Chinese Medicine Hospital in recent years. Inclusion creteria: unilateral femoral neck fracture, bipolar femoral head replacement. Exclusion creteria: the patients with posture instability and abnormal gait before the PD onset, or the femoral stem prosthesis was cemented. Mann-Whitney U test was performed on the operation time, intraoperative blood loss, postoperative drainage, hospitalization time, and one-year follow-up Harris score of the hip after the operation.

Eight cases (61.5%) of Hoehn-Yahr grade three were enrolled, including seven males and one female. Five cases (38.5%) of Hoehn-Yahr grade four were also enrolled, all of whom were male. The age (Z=-0.665), intraoperative blood loss (Z=-0.401), postoperative drainage (Z=-0.590), and length of hospital stay (Z=-0.301) of the two groups were basically the same (P>0.05). The operation time of Hoehn-Yahr grade three group was shorter (Z=-2.143, P<0.05). The changes in the Harris score after the surgery compared with those before surgery were as follows: 15-21 of Hoehn-Yahr grade three group, and 18-26 of Hoehn-Yahr grade four group. The patients of Hoehn-Yahr grade three had less change in Harris hip score after the surgery (Z=-2.372, P<0.05).

For the patients with femoral neck fractures in PD Hoehn-Yahr grade three and four undergoing bipolar femoral head replacement, the patients of Hoehn-Yahr grade three may have shorter operation time and less postoperative hip function decline.