Exact(2)
When selecting a treatment method, factors such as fracture classification, displacement, stability and whether it is an open or closed fracture have to be taken into account [6, 7].
Subgroup analyses based on the Neer classification system are planned to assess the effectiveness of treatment for the different fracture groups (2 part surgical neck; 3 part including surgical neck and 4 part fractures; fractures not meeting the Neer classification displacement criteria).
Similar(6)
According to the Jacobs classification for displacement, 38 fractures were classified as type II and 67 as type III.
Open image in new window Fig. 1 Classification of displacement patterns based on Ca and M. The boundaries marked with blue lines are those noted by Lenormand et al. (1988), whereas those marked with red lines are those from Zhang et al. (2011a).
14 They found no correlation between fracture classification, initial displacement, and final radiographic outcome.
The data extraction form consisted of 3 sheets: (1) characteristics of the studies (author, study design, fracture location, fracture classification, fracture displacement, intervention, follow-up time, number of patients, and percentage of dropouts), (2) criteria for risk of bias, and (3) effectiveness of the study (primary and secondary outcome measures, complications, union, and nonunion).
Surgeons in each centre identified potential participants, assessed eligibility, and graded each fracture into one of four types according to Sanders classification: 1=non-displaced fractures (displacement <2 mm); 2=two-part or split fractures of the subtalar joint; 3=three-part or split depression fractures; and 4=four-part or highly comminuted articular fractures.
Regardless the fracture type (according to the Neer and AO classifications), secondary displacement occurred in 14 cases.
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