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. 2006 Oct 18;2006(4):CD001708. doi: 10.1002/14651858.CD001708.pub2

Puolakka 2001.

Methods Randomisation by: sealed envelopes.
Participants one centre, Tampere, Finland 
 From February 1994 
 31 patients 
 Characteristics of participants: 
 Mean age 81 yr fixation, 82 years arthroplasty (range 77 to 90) 
 5 (16%) male 
 Loss to follow‐up: none 
 Inclusions: femoral neck fracture, Garden 3‐4; aged > 75 years 
 Exclusions: unable to walk independently (without other person's help), rheumatoid arthritis
Interventions 1. Reduction and fixation with 3 Ulleval screws versus 
 2. Cemented Thompson unipolar hemiarthroplasty (posterior approach)
Outcomes Follow‐up for 2 years at 6 weeks, 3, 12, 24 months 
 OUTCOMES COLLECTED BY TRIAL 
 (a) Operative details 
 Mean length of surgery in minutes 
 Mean operative blood loss in ml 
 (b) Complications related to type of operation 
 Internal fixation/pseudarthrosis, osteonecrosis, failed osteosynthesis 
 Replacement arthroplasty/evaluation of stem position and cementing 
 For both methods: 
 Re‐operation, wound infection 
 (c) Postoperative complications 
 Immediate systemic complications 
 (d) Postoperative care outcomes: none 
 (e) Anatomical restoration: none 
 (f) Final outcome measures 
 Mortality 3 and 24 months 
 (g) Economic cost
Notes Study terminated early due to high complication rate in fixation group. One patient randomised to receive internal fixation was excluded from the study as acceptable reduction of the fracture could not be achieved and this patient was treated with an arthroplasty.
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Unclear risk not stated
Allocation concealment (selection bias) Unclear risk 'sealed envelopes'
Blinding (performance bias and detection bias) 
 Were the assessors of pain and function at follow‐up blinded to the treatment allocation High risk no mention of blinding of assessors of pain and function