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. 2009 Oct 21;34(8):1297–1305. doi: 10.1007/s00264-009-0893-z

Table 4.

Results for minimally invasive plate osteosynthesis (MIPO) for humerus shaft fractures published in the literature

Description Reference
Livani et al. [9] Apivatthakakul et al. [6] Pospula et al. [12] Livani et al. [10] Jiang et al. [8] Ziran et al. [13] Numbela et al. [11] An et al. [7] Our study
Year of publication 2004 2005 2006 2006 2007 2007 2007 2009 2009
Fractures (n) 15 5 12 6 21 8 7 17 35
Female:male ratio (n) 1:2.8 n.r. 1:11 1:2 1:2 1:2.5 n.r. 1:2.4 1:2.9
Age (years)a 36 (14–66) n.r. 30 (17–46) 26 (14–42) 42 (18–75) 32 (21–64) >18 38 (19–60) 33 (19–54)
AO type (n)b
 12A 5 (33) 2 (40) n.r. n.r. 0 (0) 3 (36) 0 (0) n.r. 7 (20)
 12B 7 (47) 0 (0) 0 (0) 3 (36) 5 (71) 10 (29)
 12C 4 (20) 3 (60) 21 (100) 1 2 (29) 18 (51)
Fracture type (n)b
 Closed 12 (80) 5 (100) n.r. 6 (100) 17 (81) 8 (100) 5 (71) 17 (100) 20 (57)
 Open 3 (20) 0 (0) 0 (0) 4 (19) 0 (0) 2 (29) 0 (0) 15 (43)
Follow-up (months)a 24 (21–28) 10 (8–11) n.r. 16 (8–22) 29 (19–37) 8 (4–14) 12 (n.r.) 26 (14–44) 12 (6–24)
Implant
DCP:LCP:Recon (n)
15:0:0 4:1:0 12:0:0 6:0:0 0:21:0 0:8:0 3:0:4 17:0:0 26:9:0
Time to healing (weeks)a 10.4 (9–13) 9.6 (6–18) 13.6 (12–16) 11.7 (9–13) 14.3 (11–20) n.r. n.r. 15.3 (8–24) 12 (8–16)
Nonunion (n)b 1 (7) 0 (0) 0 (0) 0 (0) 2 (10) 0 (0) 0 (0) 0 (0) 3 (9)
Infection (n)b 1 (7) 0 (0) 0 (0) 1 (17) 1 (5) 0 (0) 0 (0) 0 (0) 2 (6)
PRNI (n)b 0 (0) 0 (0) 0 (0) 6 (100) 2 (10) 1 (13) 1 (14) 0 (0) 6 (17)
PRNI recovery (n)b N/A N/A N/A 6 (100) 2 (100) 1 (100) 0 (0) N/A 5 (83)
IRNI (n)b 0 (0) 0 (0) 1 (8) 0 (0) 0 (0) 0 (0) 0 (0) 0 (0) 0 (0)
Reoperation due to failure (n)b 0 (0) 0 (0) 0 (0) 1 (17) 2 (10) 0 (0) 0 (0) 0 (0) 2 (6)
Coronal angulationb n.r. n.r. 12 (100): <15° n.r. 20 (95): <5° n.r. 5 (72): <5° n.r. 22 (63): <5°
Elbow flexion–extension ROMa 133° (110–135) n.r. 119° (100–145) 128° (120–130) 117° (n.r.) 129° (120–135) n.r. 133° (100–140) 114° (60–135)

n.r. not reported, N/A not applicable, DCP dynamic compression plate, LCP locking compression plate, Recon reconstruction plate, PRNI preoperative radial nerve injury, IRNI iatrogenic radial nerve injury, ROM range of motion

a Numbers in means, range in parenthesis

b Number of cases, percentages in parenthesis

c Positive values represent varus, negative valgus

d Numbers in median, range in parenthesis