Cubital tunnel syndrome caused by ganglion cysts: a review of 59 cases
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Cubital tunnel syndrome caused by ganglion cysts is rare and reports are few. This study aimed to review a patient cohort with ganglion cysts in the cubital tunnel and identify prognostic factors.
Fifty-seven patients (59 extremities; McGowan grade I, 4; IIa, 4; IIb, 3; III, 48) were evaluated retrospectively with a minimum follow-up of 2 years. Extraneural cysts were excised completely, while intraneural cysts were incised and drained. All cases underwent subcutaneous transposition. Spearman’s rank correlation and the ordinal logistic regression model were used to assess the effect of independent variables on the postoperative McGowan grade.
VAS pain and weakness, 2-PD, key-pinch strength, grip strength, first dorsal interosseous muscle strength, Wartenberg sign, and claw hand all improved significantly. DASH scores improved from an average of 43.8 points preoperatively to 10.7 points postoperatively. According to the modified Bishop scoring system, 55 extremities (93.2%) were graded good or excellent. At the last follow-up, 29 hands (49.2%) returned to normal, and improvement by at least one McGowan grade was reached in 51 cases (86.4%). Older age, smoking, and shorter postoperative follow-up were associated with a higher postoperative McGowan grade.
Satisfactory surgical outcomes could be expected in these patients following subcutaneous transposition with excision of extraneural cysts and draining of intraneural cysts. Older age, smoking, and shorter postoperative follow-up were found to be independent risk factors for poor outcomes.
KeywordsCubital tunnel syndrome Ganglion cysts Subcutaneous transposition Prognosis Risk factors
This study was funded by a grant from National Natural Science Foundation of China, grant no. 81371374.
Compliance with ethical standards
The National Natural Science Foundation of China provided financial support in the form of the General Program of National Natural Science Foundation, grant no. 81371374. The sponsor had no role in the design or conduct of this research.
Conflict of interest
All authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers’ bureaus; membership, employment, consultancies, stock ownership, or other equity interest; and expert testimony or patent-licensing arrangements), or non-financial interest (such as personal or professional relationships, affiliations, knowledge or beliefs) in the subject matter or materials discussed in this manuscript.
All procedures performed in studies involving humanparticipants 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.
Informed consent was obtained from all individualparticipants included in the study.
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- 12.Kleinman WB, Bishop AT (1989) Anterior intramuscular transposition of the ulnar nerve. J Hand Surg Am 14:929–979Google Scholar
- 13.Kojima T, Kurihara K, Nagano T (1979) A study on operative findings and pathogenic factors in ulnar neuropathy at the elbow. Hand 11:99–104Google Scholar
- 21.Seddon HJ (1954) Peripheral Nerve Injuries, LondonGoogle Scholar
- 22.Sheldon WD (1921) Tardy paralysis of the ulnar nerve. Med Clin North Am 5:499–509Google Scholar
- 23.Shi Q, MacDermid JC, Santaguida PL, Kyu HH (2011) Predictors of surgical outcomes following anterior transposition of ulnar nerve for cubital tunnel syndrome: a systematic review. J Hand Surg Am 36(1996–2001):e1–e6Google Scholar
- 32.Yamamoto K (1996) Study of postoperative results in cubital tunnel syndrome. J Jpn Soc Surg Hand 13:704–707Google Scholar