Journal List > J Korean Fract Soc > v.30(3) > 1038095

Kim, Lee, and Jang: Minimal Invasive Plate Osteosynthesis versus Conventional Open Plating in Simple Humeral Shaft Fracture (AO Type A, B1, B2)

Abstract

Purpose

The purpose of this study is to evaluate the efficacy of minimally invasive plate osteosynthesis (MIPO) by comparing the results between open plating and MIPO conducted by simple humeral shaft fractures.

Materials and Methods

From September 2010 to February 2015, we evaluated humeral shaft fractures that 26 cases underwent MIPO and 41 cases underwent open plate fixation (OPEN). Operation time, amount of blood loss, and radiative exposure time were examined. Radiographically, bone union time and angulation were compared. At last, UCLA shoulder score and MEPI were used to compare the clinical results of shoulder and elbow and complications were examined.

Results

The average operation time 82±23 minutes in MIPO, 119±20 minutes in OPEN (p=0.007) and amount of bleeding 238±67 ml in MIPO, 303±48 ml in OPEN (p=0.003), radiation exposure time 201±85 seconds in MIPO, 20±5 seconds in OPEN (p=0.000) were statistically significant. Bone union time and angulations, clinical results were not statistically significant. In Complication, iatrogenic radial nerve paralysis occurred 2 cases, nonunion occurred 1 case in MIPO. Nonunion and soft tissue infection occurred 2 cases each in OPEN.

Conclusion

MIPO in simple humeral shaft fractures gave us radiologically and clinically satisfactory results, and may be useful by understanding the anatomical knowledge and using appropriate implants and skills.

Figures and Tables

Fig. 1

Incisional site design (A) with broad 5.0 LCP® and skin incision (B) for the minimally invasive plate osteosynthesis technique.

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Fig. 2

Clinical photo (A) and C-arm image (B) of closed reduction using modified pointed reduction forceps.

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Fig. 3

(A) Preoperative radiography of a 52-year-old male showing a right humeral fracture (AO/OTA type A3). (B) Postoperative radiography showing closed reduction and internal fixation with Metaphyseal Plate® using the minimally invasive plate osteosynthesis technique. There are two holes for reduction and compression using modified pointed reduction forceps (white arrows). (C) Radiography at three months after the operation showing radiologic union.

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Table 1

Patient Data of Humeral Fracture

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Variable MIPO group OPEN group
No. of patient 26 41
Mean age (yr) 50.2±18 43.0±18
Sex
 Male 13 21
 Female 13 20
AO classification
 A1 2 (7.7) 3 (7.3)
 A2 5 (19.2) 7 (17.1)
 A3 7 (26.9) 5 (12.2)
 B1 1 (3.8) 11 (26.8)
 B2 11 (42.3) 15 (36.6)

Values are presented as number only, mean±standard deviation, or number (%). The sum of the percentages does not equal 100% because of rounding. MIPO: minimally invasive plate osteosynthesis, OPEN: open plate fixation.

Table 2

Comparison of Results

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Variable MIPO group OPEN group p-value
Operation time (min) 82.0±23 119.0±20 0.007
Bleeding (ml) 238.0±67 303.0±48 0.003
Exposure to radiation (s) 201.0±85 20.0±5 0.000
Bone union (wk) 17.2±9.4 17.0±3.6 0.226
Angulation (°)
 Varus 6.0±2.1 1.0±1.5 0.114
 Anterior 2.0±2.5 0.0±0.7
UCLA shoulder score 34.1±10.7 33.7±12.9 0.156
MEPI 97.8±12.7 96.0±17.7 0.694

Values are presented as mean±standard deviation. p-values <0.05 were considered significant. MIPO: minimally invasive plate osteosynthesis, OPEN: open plate fixation, UCLA: University of California Los Angeles, MEPI: Mayo Elbow Performance Index.

Notes

Financial support This study was supported by research fund from Chosun University, 2014.

Conflict of interests None.

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TOOLS
ORCID iDs

Boseon Kim
https://orcid.org/0000-0001-8210-4783

GwangChul Lee
https://orcid.org/0000-0003-1639-414X

Hyunwoong Jang
https://orcid.org/0000-0002-7448-7347

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