Correlation of Dorsiflexion Angle and Plantar Pressure Following Arthrodesis of the First Metatarsophalangeal Joint

Abstract

Significant increase in plantar pressure under the first metatarsal head may be avoided by performing the arthrodesis of the 1MTTP joint below 30° and 15° for the radiological and clinical dorsiflexion angles, respectively.

Gait Analysis of Foot Compensation After Arthrodesis of the First Metatarsophalangeal Joint

“…It is known from the literature that the optimal DFA of the hallux ranges between 20 degrees and 25 degrees, with higher DFAs causing higher pressures beneath the first metatarsal. 1,3 In our opinion, decreased PP or PTI beneath the first metatarsal head was not observed since patients included in this study had an average DFA of 30 degrees.…”

Do Postoperative Hallux Angles Correlate With Outcome in MP1 Fusion? Our Experience With 71 Cases

“…15 According to these authors, an increase in DFA will increase the pressure on the first metatarsal head or the pressure on the dorsal side of the interphalangeal joint of the hallux (IF1). 16,17 However, Stevens et al 18 reported a 30° DFA in their series of patients, in which they performed an analysis of gait pressures and concluded that first MTPJ arthrodesis increased pressure on the minor metatarsals and descended on the first metatarsus. Brodsky et al 19 supplied documentary evidence about a small DFA (13.2°); excellent clinical results were obtained.…”

Characteristics of Plantar Loads During Walking in Patients with Knee Osteoarthritis

“…The increased MF and PP under M3 may be associated with the decreased range of motion (ROM) under M3 [ 23 ]. The dorsiflexion angle was positively correlated with plantar pressures under M3 [ 30 ]. In our investigation, increased MF and PP may be associated with decreased ROM under M3.…”