title: [The first exploration of a minimally invasive lysis subcutaneouly for the treatment of gluteal muscle contracture based on relatively safe region around standard injection point of gluteal muscle].
abstract: OBJECTIVE
  To explore the solution of choosing the minimally invasive incision site for gluteal muscle contracture patient based on standard injection point of gluteal muscle.
  
  
  METHODS
  from September 2008 to August 2010, 25 patients (14 males and 11 females with an average of 16.5 years, ranging from 12 to 26 years) with injected gluteal muscle contracture were prospectively studied. The course of disease was from 6 to 12 years. Firstly, the connective skin Surface line from anterior superior iliac spine to coccyx (line AD) was delineated and the point (point O) was marked out as the standard gluteal muscle injection site which was on the one-third of the distance from the anterior superior iliac spine(point A) to the coccyx (point D). Secondly, the anterior and posterior edge lines of surface projection of the gluteal muscle contracture banding (line a, line p) were delineated. Thirdly, the distance from B to O and C to O (B is the point of intersection of line a and line AD,C is the point of intersection of line P and line AD)were measured which was the intersection of line a,p and line AD to point O. Lastly, the minimally invasive surgery was operformed via the skin entry of point C.
  
  
  RESULTS
  OB = (0 +/- 0.76) cm, OC = (2.86 +/- 0.78) cm, BC = (2.86 +/- 1.01) cm,the mean postoperative drainage was less than 10 ml,there was no nerve damage,hematoma and other complications. All patients achieved the function of squatting in 4 to 6 days.
  
  
  CONCLUSIONS
  The solution of choosing the minimally invasive incision site based on standard injection point of gluteal muscle has advantages of positioning precisely,handling easily, recoverying quickly, less trauma and safety, etc.
authors.affiliation: Department of Orthopaedics, Affiliated Hospital to Guilin Medical University, Guilin 541001, Guangxi, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Xiao
authors.forename: Zhi-hong
authors.initials: ZH
authors.lastname: Tang
authors.forename: Si-rong
authors.initials: SR
authors.lastname: Zhang
authors.forename: Guo-yao
authors.initials: GY
authors.lastname: Zou
authors.forename: Rong-chi
authors.initials: RC
authors.lastname: Xiao
authors.forename: Rui-duan
authors.initials: RD
authors.lastname: Liu
authors.forename: Jun-zu
authors.initials: JZ
authors.lastname: Hu
mesh_terms: D000293:Adolescent; D000328:Adult; D002081:Buttocks; D002648:Child; D003286:Contracture / Q000601:surgery*; D005260:Female; D006801:Humans; D007273:Injections, Intramuscular; D008297:Male; D019060:Minimally Invasive Surgical Procedures; D018482:Muscle, Skeletal / Q000601:surgery*