Kullenberg 2004.

Study characteristics
Methods	Parallel RCT Approved by the ethics committee and informed consents obtained Site: Ortopedkliniken, Blekingesjukhuset, Karlshamn, Sweden Data collection: no information Funding: no information Registration: no information
Participants	80 participants with hip fracture confirmed by X‐ray Excluded: inability to rate pain Type of fracture: femoral neck (66%) or trochanteric (44%) fracture Anaesthetic technique for surgery: not stated Surgical technique: nail‐osteosynthesis (Garden 1 to 2 fractures) or hemi‐endoprosthesis (Garden 3 to 4 fractures) Mean age: 82 years (range not stated) Percentage female: 64% Length of follow‐up: in‐hospital (mean 11 days)
Interventions	Intervention: femoral nerve block (N = 40) Comparator: no nerve block (N = 40)
Outcomes	Relevant to this review. Pain. Acute confusional state. Time to first mobilization. Opioids used. Pressure sores. Participant satisfaction (all participants indicated that they would consider a new future blockade if this would be necessary). Not relevant to this review. Hospital length of stay. Block duration.
Notes	Conflict of interest: "no conflict of interest declared" DOI: n/a Email sent on 5 January 2020 Sources obtained for risk of bias assessment. Journal article with results of the trial.