Page 23 - Open versus closed Mandibular condyle fractures

Chapter 2.1 Closed
Table 1. Critical appraisal of the studies included
Criteriaa
12345678
1. Andersson et al.19
2. Dijkstra et al.20
3. Knak and Stoehr27
4. Krause and Bremerich30 5. MacLennan29
6. Marker et al.21
7. Murakami et al.22
8. Niezen et al.23
9. Niezen et al.25
10. Oikarinen et al.26
11. Rahn et al.31
12. Rutges et al.28
13. Silvennoinen et al.24 14. Silvennoinen et al.5 15. Smets et al.11
16. Yamamoto et al.32
NA, not applicable
+ + + + + - + - - - + + + + + + + + + + + + + + + + + + + + + +
+ + + +
- +/- + +
- -
+ + + + + + + + +/- - +/- +/- + + + + + + + + + +
NA + NA + NA + NA + NA + NA + NA + NA + NA + NA + NA + NA + NA + NA + NA + NA +
- + + +
- -
- +/- - ? + + + + + +
- +
- +
- ?
- NA + +/- - NA - +/- - +
26
a 1 = Clear study objective/question, 2 = Well- defined study protocol, 3 = Explicit inclusion and exclusion criteria for study participants, 4 = Specified time interval for patient recruitment, 5 = Consecutive patient enrollment, 6 = Clinically relevant outcomes, 7 = Prospective outcome data collection, 8 = High follow up rate/drop outs analysed
RESULTS
A total of 16 studies were identified in the systematic search.5,11,19-32 These studies included a combined total of 1535 patients with mandibular condyle fractures (Tables 2 - 4). The year of publication of the selected studies ranged from 1952 to 2015. The sample size in almost 50% of the studies was more than 100 patients. The mean age of patients in the studies was 31 years, but unfortunately some of the studies did include children. A clear distinction between children and adults was not made in any of the studies. The male to female ratio was 3:1. Both mandibular joints were fractured in 20% of the cases; the fractures were unilateral in 80% of the cases. In the cases of unilateral fracture, 53.6% were on the left side and 46.4% were on the right side. Of these fractures, the location was intracapsular in 17% and extracapsular in 83%. Follow-up periods varied substantially. Silvennoinen et al. reported the shortest mean follow-up period (5.4 months),5 while Andersson et al. reported the longest (31 years).19