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学习笔记33--平足症--距下关节制动术

  • 2026-03-09 17:50:14
学习笔记33--平足症--距下关节制动术

距下关节制动术是指通过跗骨窦的小切口,在跗骨窦内置入内置物,从而限制跟骨外旋及距骨内旋的活动度,拾高下沉的距骨头,阻止足在旋前时跟骨前部接触距骨外侧突,使足弓得以矫正并维持相应位置。距下关节制动术主要用于矫正青少年柔韧性平足,具有微创、操作简单、恢复快的特点。

[适应证]青少年柔韧性平足症;伴足舟骨疾病的平足症;伴跗骨联合的平足症,距下关节受累少于1/3。

[麻醉]全身麻醉或腰麻。

[体位]平卧位,患侧臀部垫枕。

[操作步骤]

(1)取跗骨窦人路,于外踝尖前方1cm做长1~2cm切口,切开皮肤及皮下组织,钝性分离深筋膜,置入导针,将导针插入跗骨窦内,导针前端位于内踝下方皮下。

(2) 沿导针方向用弯剪剪断距跟骨间韧带,顺导针置入制动器试模,背伸足部检查后足是否位于外翻中立位,并松查距下关节活动度,判断试模大小。

(3)试模完成后,沿导针置入制动器,C臂机透视确认制动器位置。

(4)确认制动器位置后,再次检查后足外翻情况及距下关节活动度,评估足弓的恢复情况。

(5)置入制动器前根据患者术前查体Silverskiold试验(若在膝关节屈曲及伸直位下踝关节背伸均不能达到20°,说明存在跟腱挛缩;若在膝关节伸直位下踝关节背伸不能达到20°,但在膝关节屈曲位下可以达到20°,说明存在腓肠肌挛缩),有跟腱或者腓肠肌挛缩者行跟腱或腓肠肌腱膜的松解。

[术后处理] 术后短腿石膏托固定2周,伤口换药每2天1次,患者术后即可进行膝关节及足趾功能锻炼;术后2周拆线后,予充气式行走支具逐渐负重功能锻炼。4周后可完全负重,8周去除行走支具。分别于术后1、2、3个月和6个月复查X线片,判断制动器位置以及足弓矫正情况。术后1年酌情行制动器取出。

[述评] 距下关节制动术具有微创、操作简便、恢复快的特点,可有效矫正扁平足畸形。应用距下关节制动术治疗青少年平足症已取得较满意的中、远期疗效。术中需注意判断制动器大小,太大会影响距下关节活动,太小导致残留跟骨外翻畸形此外需术中透视确认将制动器置于正确的位置。于严重的扁平足畸形,单纯的距下关节制动术不能完全矫正畸形,需与其他骨性手术如跟骨内移截骨术、外侧柱延长术等手术合并使用。

来源--《实用足踝外科手术技术》

【声明】:本平台所分享理念、技术、手术方法等,均为公开发行的期刊、书籍或网络资料,版权归原作者所有,本平台仅对上述材料进行翻译、系统整理、编辑加工及分享,仅供交流学习、参考之用。分享的手术技术及治疗理念、方法,仅代表个人观点,仅供学习参考。本平台不对内容真实性、技术有效性负责。依据本平台推送内容产生的相关医疗行为,与平台无关。如有内容不够准确,敬请谅解!如有侵权,联系删除。

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  1. CONNECT:[ UseTime:0.000879s ] mysql:host=127.0.0.1;port=3306;dbname=no_67808;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001273s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000639s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000619s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001381s ]
  6. SELECT * FROM `set` [ RunTime:0.000413s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001506s ]
  8. SELECT * FROM `article` WHERE `id` = 473141 LIMIT 1 [ RunTime:0.000875s ]
  9. UPDATE `article` SET `lasttime` = 1773100682 WHERE `id` = 473141 [ RunTime:0.012229s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000542s ]
  11. SELECT * FROM `article` WHERE `id` < 473141 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001401s ]
  12. SELECT * FROM `article` WHERE `id` > 473141 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000970s ]
  13. SELECT * FROM `article` WHERE `id` < 473141 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.003827s ]
  14. SELECT * FROM `article` WHERE `id` < 473141 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001502s ]
  15. SELECT * FROM `article` WHERE `id` < 473141 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.004782s ]
0.218971s