Promising changes in triceps surae activation symmetry and ankle kinematics during gait between 8 and 24 weeks after Achilles tendon repair: A case report

IF 0.2 Q4 MEDICINE, GENERAL & INTERNAL

Revista Medica Clinica Las Condes Pub Date : 2026-07-01 Epub Date: 2026-09-15 DOI:10.1016/j.rmclc.2026.07.009

Oscar Valencia PT, MSc, Fabián Branje PT, Tomás Tubino PT, Rafael Rossi PT, MSc, Diego Silva PT, MSc, Alejandro Weinstein PhD

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引用次数: 0

Abstract

Objective

To describe the temporal evolution of inter-limb asymmetries in ankle kinematics and triceps surae muscle activation during gait following Achilles tendon repair (ATR) using the PARS-Dresden technique, assessed at 8, 12, 24, and 52 weeks post-surgery.

Clinical Case

A single patient who underwent ATR using the PARS-Dresden technique was evaluated across four post-surgical time points. Ankle kinematics and surface electromyography activity of the gastrocnemius medialis (GM), gastrocnemius lateralis (GL), and soleus (SOL) were recorded over 20 gait cycles. Inter-limb symmetry was quantified using a normalized cross-correlation coefficient (cc_n) comparing the operated (OL) and non-operated (NOL) limbs.

Results

Ankle kinematic symmetry in the sagittal plane increased from 8 weeks (cc_n = 0.58) to 12 weeks (cc_n = 0.71), reaching near-complete restoration at 24 weeks (cc_n = 0.97) and maintained at 52 weeks (cc_n = 0.98). Plantar flexor activation followed a similar behavior, rising from 8 weeks (GM = 0.65, GL = 0.62, SOL = 0.70) to near-complete symmetry at 24 weeks (GM = 0.99, GL = 1.00, SOL = 0.97), sustained at 52 weeks.

Conclusion

This case showed improved symmetry between the OL and NOL in ankle kinematics and triceps surae activation during gait, achieved at 24 weeks and maintained up to one year after ATR using the PARS-Dresden technique combined with a standardized rehabilitation protocol.

查看原文本刊更多论文

跟腱修复后8至24周，三头肌表面激活对称性和踝关节运动学在步态中的有希望的变化：一个病例报告

目的研究采用PARS-Dresden技术进行跟腱修复（ATR）术后8周、12周、24周和52周步态中踝关节运动不对称和三头肌表面肌激活的时间演变。临床病例：1例使用PARS-Dresden技术进行ATR的患者在术后4个时间点进行评估。在20个步态周期内记录腓肠肌内侧肌（GM）、腓肠肌外侧肌（GL）和比目鱼肌（SOL）的踝关节运动学和表面肌电活动。通过比较手术（OL）和非手术（NOL）肢体的归一化互相关系数（cc_n）来量化肢体间对称性。结果关节矢状面运动对称性从8周（cc_n = 0.58）增加到12周（cc_n = 0.71）， 24周（cc_n = 0.97）接近完全恢复，52周（cc_n = 0.98）维持。足底屈肌的激活遵循类似的行为，从8周（GM = 0.65, GL = 0.62, SOL = 0.70）上升到24周时几乎完全对称（GM = 0.99, GL = 1.00, SOL = 0.97），持续到52周。结论：该病例显示踝关节关节和关节关节之间的对称性得到改善，步态中肱三头肌表面活动在ATR后24周实现，并在ATR后使用PARS-Dresden技术结合标准化康复方案维持长达一年。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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