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Background: Posttraumatic ankle equinus is associated with rigid deformity, poor skin condition, and multiple prior surgeries. Open acute correction has been described using osteotomies, talectomy, and arthrodesis, but concerns exist about skin complications, neurologic alterations, secondary limb discrepancy, and bone loss. Gradual correction using a multiplanar ring fixator and arthroscopic ankle arthrodesis (AAA) may decrease these complications. Methods: We retrospectively reviewed patients undergoing correction of posttraumatic rigid equinus with at least 1 year of follow-up after frame removal. The procedure consisted of percutaneous Achilles lengthening, gradual equinus correction using a multiplanar ring fixator, and AAA retaining the fixator in compression with screw augmentation. Frame removal depended on signs of union on the computed tomography scan. Visual analog scale (VAS) and Foot Function Index (FFI) scores were assessed as well as preoperative and postoperative x-rays. Complications were noted throughout the follow-up period. Results: Five patients were treated with a mean age of 35 years and mean follow-up of 31 months. Deformities were gradually corrected into a plantigrade foot over an average duration of 6 weeks. Union was achieved in all patients with a mean time of an additional 25 weeks, for a mean total frame time of 31 weeks. The mean preoperative tibiotalar angle was 151 degrees and was corrected to 115 degrees. FFI score improved from a mean of 87 to 24 and VAS from 8 to 2. Conclusion: Posttraumatic rigid equinus can be treated effectively using gradual correction followed by integrated AAA in a safe and reproducible manner. Patients in this series had excellent functional, radiological, and satisfaction results. Level of Evidence: Level IV, retrospective case series.

Background Correction of hammertoe deformities at the proximal interphalangeal (PIP) joint results in an inherent loss of motion that can be a concern for active patients who want to maintain toe function and grip strength. Diaphyseal proximal phalangeal shortening osteotomy (DPPSO) is a joint-sparing procedure resecting a cylindrical portion of the proximal phalanx on the middiaphysis. Patients/Methods This was a retrospective review including patients treated using DPPSO with at least a 1-year follow-up. Demographic, comorbidity, and Visual Analogue Scale (VAS) scores and complication data were obtained. Radiological assessment included union status and alignment. Medial frontal anatomical (mFAA), frontal proximal interphalangeal (mFIA), plantar lateral anatomical (pLAA), and medial and plantar lateral interphalangeal angles (pLIA) were measured. Results A total of 31 patients (45 toes) were included, with a mean age of 59 years (range: 24-72) and follow-up of 35 months (range: 12-60; mean preoperative VAS score was 4.9 ± 1.72 improving to 1.62 ± 2.28; P < .01). Union occurred in all patients at an average of 11.2 weeks. Complications were present on 4 toes (8.8%), with no recurrences. The pLIA significantly changed from 44.9° to 17.9°. There were no significant differences in the preoperative and postoperative values of the mFAA, pLAA, and mFIA. Conclusions DPPSO provides adequate pain relief and corrects the PIP joint in the lateral plane without significantly affecting the coronal plane or the anatomical axis of the phalanx in the frontal and lateral views, nor producing secondary deformities. DPPSO is a safe, effective, and reproducible technique with a low complication rate. Levels of Evidence: Level IV: Retrospective case series

Category: Lesser Toes Introduction/Purpose: Hammertoe deformities are a result of imbalance between static and dynamic stabilizers of the lesser toes. Flexor-to-extensor tendon transfer and PIP joint arthrodesis/arthroplasty are the gold standards of treatment. Tendon transfers are associated with stiffness, edema and recurrence. PIP arthrodesis/arthroplasty sacrifices the PIP joint producing loss of both motion and toe grip. Phalangeal sustraction osteotomies have been proposed for correcting these deformities by theoretically relaxing the surrounding soft tissue structures and correcting the hammertoe deformity at the PIP joint. We present the results of a new joint sparing procedure consisting on a Diaphyseal Proximal Phalangeal Shortening Osteotomy (DPPSO) with resection of a 3-4 mm cilindrical bone section. Methods: Retrospective study. Review of medical records of patients who underwent phalangeal shortening osteotomy for hammer toe correction from 2010 to 2016 by the senior author (L.S.). Patients with previous surgery on the toe were excluded of the study as well as patients with incomplete radiological follow-up. Demographic and comorbidities data were noted as well as postoperative complications and secondary procedures. We performed a radiographic analysis of preoperative and postoperative x-rays-Union was defined as the existence of brigding of at least 3 cortices on the osteotomy site. Preoperatively and 6 months follow up x-rays were additionally analyzed to obtain the following measurements (Figure 1): Frontal anatomic angle (medial) FAAm Lateral anatomic angle (plantar) LAAp Frontal proximal interphalangeal angle (medial) mFPIA Lateral interphalangeal angle (plantar) pLIPP Statistical analysis: t-test for paired samples to compare preoperative and postoperative angles. Results: Forty-five toes (31 patients) were included in the study. The mean age of the patients was 59,5 years and the mean follow-up was 27.9 months (range:12-52). Concomitant procedures were performed on 29 patients, most commonly Hallux Valgus correction. All patients evolved with radiographic union at an average 11,2 weeks. Two patients presented with delayed healing (15 and 19 weeks). Complications were present on 4 toes corresponding to Superficial infection (3 patients) and a symptomatic floating toe (1 patient). There were not recurrences in this group. Radiographic measurements showed no significant differences between the preoperative and postoperative mFFA (p:0,43), pLAA (p:0,239) and mFIA (p:0,239). In the other hand, the Plantar lateral interphalangeal angle (pLIA) that corresponds with the hammertoe deformity, was significantly corrected (p<0,05). Conclusion: DPPSO is a safe and reproducible procedure with a low rate of complications. This procedure has a corrective effect on the PIP joint on the sagittal plane, reducing significantly the plantar lateral interphalangeal angle and consequently the hammertoe deformity. There was no significant effect on the PIP joint on the coronal plane and neither on the anat...

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