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KMID : 1130920180220010021
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Journal of Korean Foot and Ankle Society
2018 Volume.22 No. 1 p.21 ~ p.25
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Correlation between a Rupture of the Hypovascular Zone and Early Single Heel Raising after Achilles Tendon Repair
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Song Si-Jung
Lee Moses
Shin Myung-Jin
Suh Jin-Soo
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Abstract
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Purpose: To analyze the correlation between a rupture of the hypovascular zone and early single heel raising after Achilles tendon repair.
Materials and Methods: From January 2012 to August 2015, 68 patients, who underwent surgical treatment for a Achilles tendon rupture using Krackow method, were analyzed retrospectively. The patients were divided into two groups according to possibility of single heel raises within 3 months postoperatively. During the periodic outpatient observations, the visual analogue scale, Achilles tendon total rupture score (ATRS), and timing capable single heel raises were evaluated. In addition, the preoperative defect size and distance between the calcaneal osteotendinous junction and the rupture site were measured by ultrasound in all cases.
Results: Twenty-three patients could perform a single heel raise within 3 months after surgery (early single heel raise group), and forty-five patients could perform a single heel raise after 3 month postoperatively. The age, gender, body mass index, smoking, and operation delay were similar in the two groups. In addition, the defect size and distance between the calcaneal osteotendinous junction and rupture site as measured by preoperative ultrasound were similar (p=0.379 and p=0.631, respectively). On the other hand, when the rupture site was divided into the hypovascular zone (4~7 cm from calcaneal osteotendinous junction) and non-hypovascular zone, the hypovascular zone rupture rate was significantly lower in the early single heel raise group (60.9%, 14/23; 91.1%, 41/45; p=0.003). In logistic regression analysis, the odds of the hypovascular zone rupture group being capable of early single heel raise were 0.189 (p=0.017). The ATRS score at 3 months and 1 year after surgery were significantly higher in the early single heel raise group (p<0.001).
Conclusion: Achilles tendon rupture at the hypovascular zone is a poor prognostic factor for early single heel raise and might affect the prognosis significantly after an Achilles tendon rupture operation.
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KEYWORD
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Achilles tendon, Ultrasound, Prognosis
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