Acta chirurgiae orthopaedicae et traumatologiae Cechoslovaca

Acta chirurgiae orthopaedicae et traumatologiae Cechoslovaca

Původní práce / Original papers

ACTA CHIRURGIAE ORTHOPAEDICAE ET TRAUMATOLOGIAE ČECHOSL.,
84, 2017, p. 453 - 461

Artrodéza I. metatarzofalangeálního kloubu úhlově stabilní dlahou

Arthrodesis of the First Metatarsophalangeal Joint by Locking Plate

R. KUNOVSKÝ1, T. PINK1,2, J. JAROŠÍK1
1 Oddělení klinické ortopedie, Úrazová nemocnice, Brno
2 Klinika traumatologie, Lékařská fakulta Masarykovy univerzity, Brno

ABSTRACT

PURPOSE OF THE STUDY

The authors in their paper evaluate a group of patients who underwent arthrodesis of the first metatarsophalangeal joint using a locking plate.

MATERIAL AND METHODS

In the period 2010-2015, we performed surgery in 51 patients (56 forefeet), of which in 5 cases bilaterally and in 46 cases unilaterally, in 38 women and 13 men. The mean age was 57.8 years, the mean follow-up was 3.1 years. The indications for surgery were hallux rigidus in 23 patients, hallux valgus in 15 patients, hallux varus in 3 patients, and hallux erectus in 2 patients. In 4 patients the surgery was performed for valgus deformity associated with rheumatoid arthritis, 9 patients were indicated for a failure of the prior surgical intervention. In all 56 forefeet, the anatomic, low-profile titanium plate Variable Angle LCP 1st MTP Fusion Plate 2.4/2.7 was used.

RESULTS

According to Gainor s score the surgical outcomes were assessed as excellent in 46 patients who underwent surgery (90%), good in 4 patients (8%), fair in 1 patient (2%), and poor in 0 patient (0%). In 53 forefeet, the control radiographs showed solid bone union. In 2 patients and 3 forefeet, non-union of the arthrodesis occurred. In 2 forefeet, revision arthrodesis was performed, after which solid bone union followed. Malpositioned union was reported in 5 forefeet, of which in 4 cases into valgosity and in 1 case into dorsiflexion.

DISCUSSION

Numerous fixation materials can be used for arthrodesis of the first metatarsophalangeal joint. The use of the least stable Kirschner wires (cerclage) is being abandoned and substituted with a more stable fixation by screws, memory staples and locking plates. The achievement of excellent results requires proper positioning of the arthrodesis. Impingement syndrome between the big toe and the second toe can result in painful callosities formation, too large dorsiflexion can lead to a hallux hammertoe, with reduced big toe support function, to metatarsalgia.

CONCLUSIONS

The arthrodesis is indicated in patients with Grade III and IV hallux rigidus, with severe hallux valgus, hallux varus, and in patients in whom the previous surgeries failed. We tend to prefer stable arthrodesis. Fixation by anatomic LCP plate facilitates early rehabilitation, loading and early return to work and sports activities.

Key words: arthrodesis, metatarsophalangeal joint, hallux rigidus, hallux valgus

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