Driban Jeffrey B, Swanik C Buz, Huxel Kellie C, Balsubramanian Easwaran
Temple University, Philadelphia, PA, USA.
J Athl Train. 2007 Oct-Dec;42(4):524-9.
Electric stimulation is frequently used to promote soft tissue healing, although we do not have a complete understanding of the tissue's electromagnetic properties.
To measure the transient electric changes in skin and muscle tissue immediately after trauma.
1-group time series.
Climate-controlled operating room in a public urban hospital.
Eleven participants (8 females, 3 males) with a mean age of 65.18 +/- 11.36 years undergoing total hip arthroplasty.
INTERVENTION(S): An incision approximately 10 cm distal to the posterior superior iliac spine extended distally over the greater trochanter and along the lateral limb. The incision was completed in 2 cuts: (1) skin and subcutaneous fat and (2) muscle tissue.
MAIN OUTCOME MEASURE(S): Three measurement sessions were performed with an electrometer before and after a skin incision and after a muscle incision. Potential differences and current intensity were measured immediately after acute trauma to determine the transient electric changes associated with soft tissue injury.
The electric potentials were significantly more negative after the skin incision (P = .036) and skin plus muscle incision (P = .008; preincision = 0.001 +/- 0.015 V, skin incision = -0.127 +/- 0.134 V, skin plus muscle incision = -0.192 +/- 0.153 V). Current intensity changed significantly after the skin plus muscle incision (P = .008; preincision = 0.046 +/- 0.112 pA, skin incision = -0.803 +/- 0.904 pA, skin plus muscle incision = -1.708 +/- 1.302 pA).
Soft tissue trauma generated negative transient electric changes.
尽管我们对组织的电磁特性尚未完全了解，但电刺激常用于促进软组织愈合。
测量创伤后皮肤和肌肉组织的瞬态电变化。
单组时间序列研究。
城市公立医院的气候控制手术室。
11名接受全髋关节置换术的参与者（8名女性，3名男性），平均年龄65.18±11.36岁。
在髂后上棘远端约10厘米处做一个切口，向远端延伸至大转子上方并沿外侧肢体。切口分两步完成：（1）切开皮肤和皮下脂肪；（2）切开肌肉组织。
在皮肤切开前、切开后以及肌肉切开后，用电位计进行三次测量。在急性创伤后立即测量电位差和电流强度，以确定与软组织损伤相关的瞬态电变化。
皮肤切开后（P = 0.036）以及皮肤加肌肉切开后（P = 0.008；切开前 = 0.001±0.015伏，皮肤切开后 = -0.127±0.134伏，皮肤加肌肉切开后 = -0.192±0.153伏），电位显著更负。皮肤加肌肉切开后电流强度有显著变化（P = 0.008；切开前 = 0.046±0.112皮安，皮肤切开后 = -0.803±0.904皮安，皮肤加肌肉切开后 = -1.708±1.302皮安）。
软组织创伤产生负向瞬态电变化。
