To analyze and summarize the clinical classification of pressure injury of ischial tuberosities and various repair methods, and explore the effect of repair and reconstruction for providing a new therapeutic schedule for the repair of pressure injury of ischial tuberosities.

From January 2013 to January 2018, a total of 109 wounds in 92 patients with pressure injury of ischial tuberosities were treated in Department of Burns and Plastic Surgery, Wound Repair Center, Fourth Medical Center of PLA General Hospital. Among them, A total of 101 wounds were repaired surgically in 86 patients, including 49 males and 37 females, aged 31-79 years. According to the revised edition of the 2016 International Pressure Ulcer Guidelines, in the repaired wounds mentioned above, there were 68 cases of Class Ⅲ wounds and 33 cases of Class Ⅳ wounds. The wound area was 1 cm×9 cm to 11 cm×16 cm, the depth was 1 cm to 6 cm, and the wound base area was 2 cm×8 cm - 8 cm×14 cm, deep lacunar volume (saline water method) 3-60 mL. According to the degree of tissue defect after thorough debridement, it can be divided into 4 types, each of which can be repaired according to the corresponding scheme: type Ⅰ was repaired by direct debridement and suture, type Ⅱ was repaired by local transfer of inferior gluteal artery perforator flaps, type Ⅲ was repaired by filling gracilis muscle flaps or gluteus maximus muscle flaps, type IV was repaired with gracilis or gluteus maximus muscle flaps combined with inferior gluteal artery perforator flaps. The healing effect and follow-up were observed after operation.

Of 101 wounds in 86 patients, 36 wounds were type Ⅰ, 32 wounds were primary healing, 4 wounds were secondary healing after revision; 29 wounds were type Ⅱ, 23 wounds were primary healing, 6 wounds were revision, 4 wounds were secondary healing; 30 wounds were type Ⅲ, 28 wounds were primary healing, 2 wounds were secondary healing after revision; 6 wounds were type Ⅳ, 4 wounds were primary healing and 1 wound was secondary healing after revision. Seventy-one patients were followed up for 6 to 12 months, with an average of 7.2 months, 11 cases relapsed and 6 new cases were found.

Because of the special location of ischial tuberosities, the repair of pressure injury is relatively difficult. According to the summary of clinical cases, it can be divided into 4 types. Satisfactory repair effect can be obtained and recurrence can be avoided by choosing appropriate repair schemes for different types.