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Foot Function After Surgically Treated Intraarticular Calcaneal Fractures: Correlation of Clinical and Pedobarographic Results of 65 Patients Followed for 8 Years.

Abstract：

OBJECTIVES:To correlate functional deficits after surgical treatment of displaced intraarticular calcaneal fractures (DIACFs) as measured through dynamic pedobarography with clinical and radiographic long-term results. DESIGN:Retrospective single-center study. SETTING:Level 1 trauma center. PATIENTS:Sixty-five patients with unilateral DIACFs, reexamined at an average of 8.1 years after surgery. INTERVENTION:Internal fixation of DIACF with lateral plate or percutaneous screws. MAIN OUTCOME MEASUREMENTS:Dynamic pedobarography, AOFAS, Zwipp, SF-36 scores, Foot Function Index, Böhler angle, and articular congruity. RESULTS:When compared with the uninjured side, pedobarography of the operated foot revealed a significantly increased contact area of the hindfoot and midfoot, with a decreased contact area under first/second metatarsal (MT) and first/second toe after DIACF. Maximum pressure and pressure time integral were significantly increased at the midfoot and lateral MT with a decrease under the hindfoot and first to second MT/toe. Midfoot pressure time integral correlated with the range of plantarflexion. Fracture classification correlated with MT 1 contact time. Hindfoot and MT contact times were negatively correlated with Böhler angle. Patients with the smallest side-to-side differences in pedobarogaphy had overall highest scores and significantly greater ankle/hindfoot range of motion at follow-up. CONCLUSIONS:Significant correlations were found between clinical and pedobarographic results. Increased contact areas and time at the midfoot indicating a lateral load shift correlated with inferior outcome and decreased subtalar motion. These results support the importance of reconstruction of the subtalar joint and overall bony morphology of the calcaneus with preservation of subtalar motion as necessary for global foot function. LEVEL OF EVIDENCE:Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

journal_name

J Orthop Trauma

journal_title

Journal of orthopaedic trauma

authors

Dürr C,Apinun J,Mittlmeier T,Rammelt S

doi

10.1097/BOT.0000000000001325

subject

Has Abstract

pub_date

2018-12-01 00:00:00

pages

593-600

issue

eissn

0890-5339

issn

1531-2291

journal_volume

pub_type

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Foot Function After Surgically Treated Intraarticular Calcaneal Fractures: Correlation of Clinical and Pedobarographic Results of 65 Patients Followed for 8 Years.