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Absence of flexor digitorum profundus muscle and variation of flexor digitorum superficialis muscle in a little finger: two case reports

Abstract

Purpose

Knowledge of rare variants of the FDP is of high clinical importance for physicians examining patients for tendon lacerations and especially for hand surgeons operating tendon injuries.

Methods

During routine dissection at our Department of Anatomy both cases were observed.

Results

Variations of flexor digitorum superficialis and flexor digitorum profundus muscles of the little finger were observed in two cadavers. In both cases, the flexor digitorum profundus muscle for the little finger was absent. Moreover, in the first case, the flexor digitorum superficialis muscle for the little finger was hypoplastic and in the second case it featured variable insertion.

Conclusion

There were found only four cases in previous literature describing absent flexor digitorum profundus tendon without any muscle attachment to the base of the distal phalanx. Furthermore, all previously described cases were observed in living patients. To our best knowledge, a case report in cadaver has yet not been reported and is of high importance for hand surgeons examining the hand for tendon injuries.

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Fig. 1

References

  1. 1.

    Cho KH, Kim JH, Ha YS, Murakami G, Cho BH, Abe S (2012) Development of the deep flexor tendons and lumbricalis muscle in the hand and foot: a histological study using human mid-term foetuses. Folia Morphol (Warsz) 71:154–163

    CAS  Google Scholar 

  2. 2.

    Chujo T, Manabe T, Hasegawa T et al (2003) Congenital defects of the little finger flexor tendon a case report. Chugokushikokuzasshi 15:288–289 (in Japanese)

    Google Scholar 

  3. 3.

    Dylevský I (1968) Tendons of the m. flexor digitorum superficialis et profundus in the ontogenesis of the human hand. Folia Morphol (Praha) 16:124–130

    Google Scholar 

  4. 4.

    Fukuoka M, Takayama S, Seki A (2014) Congenital defects of the flexor digitorum profundus tendon of the little finger. Hand Surg 19:253–256

    Article  Google Scholar 

  5. 5.

    Furnas DW (1965) Muscle-tendon variations in the flexor compartment of the wrist. Plast Reconstr Surg 36:320–323

    CAS  Article  Google Scholar 

  6. 6.

    Furrer M, Schweizer A, Meuli-Simmen C (2007) Aplasia of the flexor digitorum profundus tendon of the small finger. J Hand Surg Eur 32:111–112

    CAS  Article  Google Scholar 

  7. 7.

    Gonzalez MH, Whittum J, Koggan M, Weinzweig N (1997) Variations of the flexor digitorum superficialis tendon of the little finger. J Hand Surg Br 22:277–280

    CAS  Article  Google Scholar 

  8. 8.

    Gruber W (1886) Musculus flexor digitorum profundus mit Mangel einer Sehne zum Mittelfinger. Archiv f pathol Anat 103:473

    Article  Google Scholar 

  9. 9.

    Hyatt B, Rhee PC, Moran SL, Steinmann SP (2016) Absent ring finger flexor digitorum profundus presenting as a jersey finger. J Hand Surg Am 41:e95–97

    Article  Google Scholar 

  10. 10.

    Kaplan EB (1969) Muscular and tendinous variations of the flexor superficialis of the fifth finger of the hand. Bull Hosp Jt Dis 30:59–67

    CAS  Google Scholar 

  11. 11.

    Kay SPJ, Lees VC (2000) Anomalies of digital flexor tendons. In: Gupta A, Kay SPJ, Scheker LR (eds) The growing hand, 1st edn. Mosby, London, pp 326–329

    Google Scholar 

  12. 12.

    Kisner WH (1980) Double sublimis tendon to fifth finger with absence of profundus. Plast Reconstr Surg 65:229–230

    CAS  Article  Google Scholar 

  13. 13.

    Miura T, Tokuyama N, Ohya J (2010) Spontaneous rupture of the flexor digitorum superficialis tendon of the little finger with aplasia of the flexor digitorum profundus tendon. J Hand Surg Eur 35:237–238

    Article  Google Scholar 

  14. 14.

    Wahba MY, Singh GD, Lozanoff S (1998) An anomalous accessory flexor digiti minimi profundus muscle: a case study. Clin Anat 11:55–59

    CAS  Article  Google Scholar 

  15. 15.

    Yaminne K, Erić M (2018) Agenesis, functional deficiency and the common type of the flexor digitorum superficialis of the little finger: a meta-analysis. Hand Surg Rehabil 37:77–85

    Article  Google Scholar 

  16. 16.

    Yilmaz A, Bozer C, Uluçam E, Taşkinalp O (2009) An anomaly of flexor muscles of the fifth (little) finger of the hand: an anatomical case report. Clinics (Sao Paulo) 64:1133

    Google Scholar 

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Acknowledgements

We are very thankful to all the body donors for their kind donation, to Dr. Shilu Shrestha and Dr. David Veigl for hand surgery consultations, Michal Beneš for English language corrections, Nastasia Iashchenko for drawing a scheme and to anonymous reviewer for the help with the current version of this manuscript.

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Authors

Contributions

MB: data collection, manuscript writing. VK: project development, data collection, manuscript editing. DK: project development, manuscript editing.

Corresponding author

Correspondence to David Kachlik.

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Conflict of interest

The authors declare that they have no conflict of interest. Institutional support was received from Charles University as Grant PROGRES Q37.

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All procedures performed in studies involving human participants were in accordance with the ethical standards and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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Belbl, M., Kunc, V. & Kachlik, D. Absence of flexor digitorum profundus muscle and variation of flexor digitorum superficialis muscle in a little finger: two case reports. Surg Radiol Anat 42, 945–949 (2020). https://doi.org/10.1007/s00276-020-02420-y

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Keywords

  • Anatomical variation
  • Flexor digitorum profundus
  • Flexor digitorum superficialis
  • Hand surgery
  • Musculoskeletal system