Abstract
Purpose
For patients with metacarpophalangeal (MCP) extensor tendon subluxation caused by finger flicking injury, we performed an extensor tendon realignment and direct repair technique. The purpose of this study was to evaluate the clinical outcome after direct repair of the sagittal band in patients with MCP extensor tendon subluxation caused by finger flicking injury and to introduce the repair technique.
Methods
A total of 26 patients with a mean age of 39.9 years were included in the study. The mean time from injury to surgery was 51.3 days. The ruptured sagittal band was reattached to the lateral side of the extensor tendon using a continuous interlocking suture. Patients were evaluated for pain using a visual analog scale (VAS), range of motion, long fingertip pinch strength, disabilities of the arm, shoulder, and hand (DASH) score, and the recurrence of extensor tendon subluxation or dislocation.
Results
All patients had full range of motion compared to the uninjured contralateral digit. Long fingertip pinch strength was also comparable to that of the contralateral digit in all patients. The DASH score was also improved from a preoperative average of 28.8 to a postoperative average of 1.0.
Conclusions
Realignment of the extensor tendon and direct repair of the superficial layer of the sagittal band to the extensor digitorum communis (EDC) tendon is recommended as a treatment option in patients with chronic MCP extensor tendon subluxation, as well as for acute MCP extensor tendon subluxation in patients that have failed or could not maintain conservative treatment approaches.
Zusammenfassung
Zielsetzung
Bei Patienten mit Subluxation der Strecksehne am Fingergrundgelenk (metakarpophalangeal [MCP]) durch eine Fingerschnippverletzung erfolgten eine Stellungskorrektur der Strecksehne und eine direkte Wiederherstellung. Ziel der Studie war es, das klinische Ergebnis nach direkter Wiederherstellung des sagittalen Bands bei Patienten mit MCP-Strecksehnensubluxation, verursacht durch eine Fingerschnippverletzung, zu beurteilen und das Wiederherstellungsverfahren zu etablieren.
Methoden
Insgesamt 26 Patienten in einem Durchschnittsalter von 39,9 Jahren wurden in die Studie eingeschlossen. Die durchschnittliche Zeitspanne von der Verletzung bis zum operativen Eingriff betrug 51,3 Tage. Das rupturierte sagittale Band wurde mit einer fortlaufenden Interlocking-Naht im lateralen Bereich der Strecksehne angebracht. Der Schmerz der Patienten wurde mithilfe einer visuellen Analogskala (VAS) bestimmt. Des Weiteren wurden der Bewegungsumfang, die Kraft des Mittelfingerspitzgriffs, die körperliche Einschränkung von Arm, Schulter und Hand (Disabilities of the Arm, Shoulder, and Hand [DASH] Score) sowie Rezidive der Strecksehnensubluxation oder Strecksehnenluxation erfasst.
Ergebnisse
Alle Patienten wiesen einen vollen Bewegungsumfang im Vergleich zum unverletzten kontralateralen Finger auf. Auch die Kraft des Mittelfingerspitzgriffs war bei allen Patienten mit der des kontralateralen Fingers vergleichbar. Verbessert war zudem der DASH-Score: von durchschnittlich 28,8 präoperativ auf 1,0 postoperativ.
Schlussfolgerungen
Die Stellungskorrektur der Strecksehne und direkte Befestigung der oberflächlichen Schicht des sagittalen Bands an der Sehne des Extensor digitorum communis wird als Behandlungsoption für Patienten mit chronischer MCP-Strecksehnensubluxation empfohlen. Empfohlen wird das Verfahren auch für Patienten mit akuter MCP-Strecksehnensubluxation, wenn konservative Behandlungsansätze gescheitert sind oder die Patienten die Behandlung nicht aufrechterhalten können.
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Abbreviations
- EDC:
-
Extensor digitorum communis
- MCP:
-
Metacarpophalangeal (joint)
- IRB:
-
Institutional review board
- IP:
-
Interphalangeal (joints)
- TAM:
-
Total active motion
- DASH:
-
Disabilities of the arm, shoulder, and hand
- VAS:
-
Visual analog scale
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I.T. Hong, C.H. Oh, Y.S. Sim and S.H. Han declare that they have no competing interests.
.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. Informed consent was obtained from all individual participants included in the study.
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Level of Evidence: Therapeutic case-control study (Level III)
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Hong, I.T., Oh, C.H., Sim, Y.S. et al. Direct repair of the sagittal band for extensor tendon subluxation caused by finger flicking. Orthopäde 46, 755–760 (2017). https://doi.org/10.1007/s00132-017-3450-2
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DOI: https://doi.org/10.1007/s00132-017-3450-2
Keywords
- Sagittal band rupture
- Extensor tendon subluxation
- Finger flicking
- Direct repair
- Extensor digitorum communis