Abstract
Purpose
Options for the treatment of proximal- and middle-thirds of humeral shaft fractures include intramedullary interlocking nail (IMN) and minimally invasive plate osteosynthesis (MIPO). However, whether IMN provides better clinical outcomes than MIPO surgical technique still remains unclear. This study was designed to compare clinical outcomes of the IMN with MIPO technique for the treatment of proximal- and middle-thirds of humeral shaft fractures.
Method
A retrospective cohort analysis of 55 proximal- and middle-thirds of humeral shaft fractures surgically treated using IMN (n = 25) or MIPO (n = 30) from January 2012 to January 2016. Peri-operative and follow-up data (a minimum of 1 year) of the patients (aged from 18 to 56 years) were collected. Operative time, union time, VAS scores, surgery-related complications, and implant removal rate were compared between the two groups in this study. Besides, the functional outcomes were evaluated using the Rating Scale of American Shoulder and Elbow Surgeons’ Form (ASES) and Mayo Elbow Performance Score System (MEPS).
Result
We found significantly shorter operative time and much less blood loss in IMN group, and lower VAS scores in the IMN group after surgery at first and third months but not at the sixth month. Complication rate was found to be relatively higher in the MIPO group when compared to the IMN group. No significant difference was observed between these two groups regarding ASES and MEPS scores. Three patients in the MIPO group suffered iatrogenic radial nerve injury and recovered after four to five months later. No implant failures occurred in either group.
Conclusion
Intramedullary interlocking nail seemed to be superior to minimally invasive plate osteosynthesis in the treatment of proximal- and middle-thirds of humeral shaft fractures due to shorter operative time and union time, less early post-operative pain, and fewer complications. The intramedullary interlocking nail could be considered a better surgical option for the management of proximal middle humeral fractures, though it may also depend on the surgeons’ skills and learning curve. Further in-depth prospective studies are in great need to verify our conclusion.
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Data Availability
All the data and materials are available upon requests from the corresponding author.
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This work was supported by the National Natural Science Foundation of China (81701364).
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YW, HC, and LC: study design and performance. XZ and JC: data collection and data analysis. XC: data interpretation. YW, HC, and LW: drafting manuscript. LC: revising manuscript content. LC: supporting the study and approving the final version of the manuscript. All authors approved the submitted version.
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This research study was conducted retrospectively from data obtained for clinical purposes. Approval from the ethical committee of Changhai Hospital and informed consent of enrolled patients were obtained prior to initiating data collection.
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Wang, Y., Chen, H., Wang, L. et al. Comparison between osteosynthesis with interlocking nail and minimally invasive plating for proximal- and middle-thirds of humeral shaft fractures. International Orthopaedics (SICOT) 45, 2093–2102 (2021). https://doi.org/10.1007/s00264-020-04869-3
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DOI: https://doi.org/10.1007/s00264-020-04869-3