| Methods |
Randomisation by: sealed envelopes. |
| Participants |
One hospital, Sundsvall County Hospital, Sweden.
From February 1992 to September 1994
100 patients.
Characteristics of participants:
Mean age 81 years (range 70 to 96)
Male: 29 (29%)
Loss to follow‐up: not stated
Inclusions: displaced cervical hip fracture, aged > 70 years
Exclusions: senile dementia, immobility, unable to consent, refusal, delay > 12 hours fracture to surgery, 'medical findings' |
| Interventions |
1. Reduction and fixation with 2 von Bahr screws versus
2. Cemented Variokopf bipolar hemiarthroplasty (posterior approach) |
| Outcomes |
Follow‐up for minimum 5 years all survivors
OUTCOMES COLLECTED BY TRIAL
(a) Operative details:
Length of surgery in minutes
Operative blood loss in ml
Units blood transfused
(b) Complications related to type of operation
For internal fixation: non‐union, avascular necrosis
For replacement arthroplasty: dislocation
For both methods:
Re‐operation
Superficial wound infection
Deep wound infection
(c) Postoperative complications: not clearly stated
(d) Postoperative care outcomes
Length hospital stay /orthopaedic ward only
Number discharged home directly
(e) Anatomical restoration: no outcomes
(f) Final outcome measures:
Mortality at 2 and 5 years
Pain at 4 months and 5 years
(g) Economic cost: none given |
| Notes |
Extra information supplied by trialists |
| 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' opened in the operating room |
| 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 |
