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Wedge tarsectomy using patient specific instrumentation for complex multiplanar foot deformity Reconstruction: A prospective case series.

BACKGROUND: Bony correction in complex cavovarus deformities is often multiplanar. We examine our results following wedge tarsectomy (WT) using patient-specific instrumentation (PSI). METHODS: This single-centre, prospective case series evaluated noncorrectable cavovarus feet undergoing PSI-guided WT. Accuracy of PSI guides/plans, operative duration, and adjunctive procedures were recorded. Weightbearing CT (WBCT) measurements and PROM scores were recorded preoperatively and postoperatively, with 1 year follow-up. Data was then statistically analysed. RESULTS: Eleven patients were included. Planned correction was achieved (two required minor intraoperative adjustments to the initial osteotomy and nine required adjunctive procedures). Mean operative time was 135 min. Postoperative improvements were significant radiologically and in MOxFW walking distance. All fused by 3 months, with no significant complications. CONCLUSION: PSI-guided wedge tarsectomy safely achieves predictable multiplanar corrections. Our unit's experience has been excellent, with improvement in patients' walking, particularly with larger deformity corrections. LEVEL OF EVIDENCE: Level IV, prospective case series.

Humans

[Anterior tarsectomy for pes cavus: indications and long term results].

The authors have reviewed 48 cases of pes cavus treated by anterior tarsectomy with an average follow-up of two years. The clinical, anatomical and radiological features of the condition are described. The results were satisfactory in two-thirds of the cases. Failures were related to unsatisfactory indications such as children under thirteen, progressive neurological disease or associated impairment of the ankle joint (arthritis, dislocation). The indications for the procedure are discussed and compared with those for Dwyer calcaneal osteotomy, triple arthrodesis, soft tissue operations (Steindler) or resection of the metatarsal heads.

Adolescent

Anterior tarsectomy reoperation for upper eyelid blepharoptosis or contour abnormalities.

In five cases, a simplified anterior tarsal resection corrected complicated upper eyelid blepharoptosis and contour abnormalities. One case of residual blepharoptosis after levator muscle resection was corrected by resecting an amount of tarsus equal to the desired amount of correction. Two cases of upper eyelid blepharoptosis resulting from overcorrected levator muscle recession were corrected in the same manner. In one case of residual segmental blepharoptosis of the upper eyelid causing a contour abnormality, we resected a segment of tarsus corresponding to the amount of blepharoptosis in the affected segment of the eyelid. In one patient who developed a contour abnormality after a Fasanella procedure with segmental blepharoptosis nasally and overcorrection temporally, a segment of tarsus resected nasally and inserted temporally created an even contour. Anterior tarsal resection is a simple method of revising the upper eyelid level of contour in situations where the upper eyelid anatomy has been distorted by previous surgery.

Adult

Management of myogenic (myopathic) ptosis.

In senile ptosis and late-acquired hereditary ptosis, the Fasanella-Servat procedure is dependable and successful. However, levator resection by the posterior approach is appropriate for the more severe problems. In senile ptosis, a search should be made for signs that might prompt disinsertion repair. The decision for surgery in patients with chronic progressive external ophthalmoplegia or myotonic dystrophy should be made cautiously, and the "optical tarsectomy" should be considerable before conservative levator resection or fascia lata suspension. The patient with myasthenia gravis should be identified, medical evaluation initiated, and except in rare instances, surgery avoided. The more unusual forms of myogenic ptosis should be treated surgically only when the ptosis persists and has stabilized.

Adolescent

[Osteotomy of the calcaneus for pes cavus in childhood].

Osteotomy of the calcaneus (Dwyer procedure) was performed in 14 children (26 feet) aged between 5 and 15 years. On four occasions it was associated with an osteotomy of the first metatarsal and on three occasions with tarsectomy. The technique is described and the results are analysed. The authors conclude that the results were good in children under the age of 10 whilst the feet were still supple. In children over the age of 10, in whom the feet were more rigid, the gait was improved but the cavus deformity was not improved. The best age for operation is between 6 and 10 years.

Adolescent

[Senile ectropion and entropion].

Senile ectropium and entropium are a result of progressive loss of tissue elasticity in the lower lid of the aging patient. In case of ectropium slackening takes place near the lid margin, whereas entropium may develop if this process occurs at a certain distance from the lid margin. Based on these facts, wedge tarsectomy together with a lateral blepharorrhaphy as described by Kuhnt-Blascovicz is the logical treatment for ectropium, while a wedge resection of the tarsus plus formation of a tight muscle sling of the infratarsal portion of the orbicularis muscle is our preferred method to correct the entropium.

Aged

[Flat foot: treatment by sub-talar arthrodesis with reposition of the talus calcaneum (author's transl)].

Since 1962, the authors have used a technique of sub-talar arthrodesis combined with talar-calcaneal reposition ("horseman" operation) in cases of valgus flat foot, accompanied by symptoms, in moderate forms with exaggerated talar-calcaneal divergence and verticalisation of the talus. This operation involves only the sub-talar joint. The mid-tarsal joint is untouched. Technique must be precise in order to avoid hyper or hypo-correction. The results are constantly good. The mid-tarsal joint remains free, which offers a definite advantage in comparison with classical double tarsectomy.

Arthrodesis