| Objective: To analysis the relation of clinical results and ages, osteoporosis, types of operation in hemiarthroplasty for femoral neck fractures, from the follow-up 109 cases in our hospital. In order to give clinical indications for the operations in femoral neck fractures.Methods: Follow-up our hospital patients who were treated with hemiarthroplasty for femoral neck fractures from Aug, 1992-Jul, 2004(time ranging over 5 years and 4 months) and count HHS of postoperative patients with different ages, postoperative times, Q, types of prosthesis, types of operation(with or without cement) with Harris hip scores standard.Results: There are 109 patients with hemiarthroplasty, including unipolar and bipolar , cemented and uncemented hemiarthroplasty.1. Clinical results. (1) In all 109 cases, 11 patients had died of malignant tumors, various diseases or other causes (mortality 10.1%); 43 patients had hip pain (39.4%); 3 infection(2.75%) and 3 dislocations(2.75%). There were 20 cases acetabular wear(18.3%), 9 cases DVT(8.26%), 37 cases loosening and subsidence(33.9%), 8 received secondary arthroplasty (revision rate 7.34%). In the other 101 cases, preoperative score averaged to 43 and postoperative score 87 ("fair" rate 81%). (2)Harris score significantly associated with ages of patients and decrease by patients' ages up. HHS in group 65-74 years old (89.91±4.64), group 75 years old and more(83.83±6.74) are less than group 55-64 years old (93.76±5.35), p<0.05. HHS decrease company by the time of postoperation. HHS in group 75 years old 3 years and more after operation (72.35±8.51)are less than same group 1 year postoperatively (83.83±6.74), p<0.05.HHS are correlated negatively with time of postoperation, R=0.5886. (3) HHS of group unipolar hemiarthroplasty (90.37±7.25) was not significant differences to HHS of group bipolar hemiarthroplasty ( 89.91±7.64 ) , p> 0.05. (4) HHS of patients who obtain cemented hemiarthroplasty ( 91.13±8.25 ) are more than those with uncemented hemiarthroplasty (80.61±10.92) ,p<0.05.2. Relations between Q and HHS of patients with HA.The more Q, the more HHS. Q is correlated positively with HHS of patients with hemiarthroplasty, R=0.7666.3. X-Rays postoperative evaluation.37 cases were loosened 3 year and more after operation(33.9%), including 22 cases cemented HA(33.7%) and 15 cases uncemented HA(30%). 20 acetabular cartilage had been worn in patients with hemiarthroplasty(18.3%), including 9 cases unipolar hemiarthroplasty (19.1%) and 11 cases bipolar hemiarthroplasty(l 7.7%).Conclusion:l.The clinical results of hemiarthroplasty for femoral neck fracture were quite dependable.2.HHS of patients with HA are correlated strongly with ages and osteoporosis.3.In clinical results, HHS of patients with uncemented HA are poor than that of patients with cemented HA.4.HHS of group unipolar hemiarthroplasty was not significant differences to that of group bipolar hemiarthroplasty5.Long-term clinical results were worse than short-term results.6.Hemiarthroplasty is not recommdable for those comparatively younger patients with good systematic status, which should be treated by methods other such as total hip arthroplasty.7.Strictly appraising the operative indications, standardizing the operative processes , effectively preventing out out of the postoperative complications will remarkable improve the clinical results of hemiarthroplasty for femoral neck fractures.
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