Rectal Prolapse With ODS. STARR vs LVR.

Inclusion Criteria: * female gender, * the presence of rectorectal or rectoanal intussusception as main cause of ODS, confirmed by defecography, * type of operation performed (STARR or LVR), * ODS score \> 14 \[17\] * PACQoL \>32 \[18\] * ODS symptoms for at least 12 months prior to enrollment * Failure of at least 6 months of medical therapy Exclusion Criteria: * male gender, * severe fecal incontinence (CCS score\>6, Maximum Resting Pressure at rectal manometry \< 50 mmHg), * combined procedures * previous surgery on rectum or anus for cancer or rectal prolapse, inflammatory bowel disease, other type of surgery to relieve ODS * pregnancy, * anismus or dissinergic defecation * full-thickness prolapse * stress urinary incontinence associated * histerocele or cystocele associated (since we usually correct both defects in the same surgical procedure) * prior pelvic radiotherapy * slow transit constipation defined as ≤ 2 bowel movements per week, * any psychiatric diseases.