Abstract
Background
Surgical outcomes for cubital tunnel syndrome have been reported to be satisfactory, but could be compromised by advanced age and severe nerve compression. We aim to evaluate the prognosis of severe cubital tunnel syndrome in patients aged >70 years.
Methods
This retrospective study included 25 patients (26 extremities, all McGowan grade III, age >70 years); 21 underwent subcutaneous transposition and 5 in situ decompression. Postoperative follow-up lasted >2 years. Demographic data, clinical symptoms, physical examination findings, and the Disabilities of the Shoulder, Arm, and Hand Questionnaire were evaluated preoperatively and at final follow-up. Pain and weakness were evaluated using the visual analog scale and overall functional recovery using the modified Bishop’s Score and McGowan Grade.
Results
Significant improvements were seen in both sensory and motor function. VAS pain and weakness, 2-PD, key-pinch strength, grip strength, first dorsal interosseous muscle strength, the Wartenberg sign, and claw hand all improved significantly. DASH scores improved from an average of 45.2 points preoperatively to 15.9 points postoperatively. According to the modified Bishop scoring system, 10 extremities were graded excellent; 12, good; 2, fair; and 2, poor. Improvement of at least one McGowan Grade was seen in 18 cases, but only 2 extremities recovered to normal.
Conclusion
For patients aged >70 years with severe cubital tunnel syndrome, surgical treatment is effective, but complete recovery is unlikely, and the recovery process is long.
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Acknowledgements
This study was funded by a grant from the National Natural Science Foundation of China, grant no. 81371374.
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National Natural Science Foundation of China provided financial support in the form of General Program of National Natural Science Foundation, grant no. 81371374. The sponsor had no role in the design or conduct of this research.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. For this type of study formal consent is not required.
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Informed consent was obtained from all individual participants included in the study.
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Comments
A well-done and convincing study showing that ulnar nerve decompression, either simple or combined with a subcutaneous transposition, can produce recovery in the majority of patients even when over 70 years of age and with evidence of axonal loss. An important finding is that recovery occurs over a several year period so both patients and surgeons must be patient.
Michel Kliot
Illinois, USA
Jinsong Tong and Bin Xu contributed equally to this work.
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Tong, J., Xu, B., Dong, Z. et al. Surgical outcome for severe cubital tunnel syndrome in patients aged >70 years: a mean follow-up of 4.5 years. Acta Neurochir 159, 917–923 (2017). https://doi.org/10.1007/s00701-017-3113-4
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DOI: https://doi.org/10.1007/s00701-017-3113-4