**Question:** A 26-year-old nulliparous female with third degree uterine prolapse but no cystocele and no rectocele is best treated by:

A. Pelvic floor muscle training (PFMT)
B. Pelvic floor muscle training (PFMT) + Burch colporrhaphy
C. Burch colporrhaphy
D. Burch colporrhaphy + sacrospinous ligament fixation

**Correct Answer:** D. Burch colporrhaphy + sacrospinous ligament fixation

**Core Concept:**
Uterine prolapse is a condition where the uterus descends abnormally through the vagina due to weakened pelvic floor muscles and supportive structures. Different types of prolapse are classified based on the degree of descent:

1. First degree: mild descent of the lower uterine segment or cervix
2. Second degree: descent of the entire uterus through the vagina, with or without protrusion of the vaginal introitus
3. Third degree: complete prolapse of the uterus through the vagina, with or without protrusion of the vaginal introitus

**Why the Correct Answer is Right:**
For a third-degree uterine prolapse, surgery is often required to address the underlying structural issues. Burch colporrhaphy is a surgical procedure that involves placing a prosthetic mesh or autologous fascia lata graft to reinforce the anterior vaginal wall, posterior vaginal wall, and the pubocervical fascia.

Sacrospinous ligament fixation is an additional procedure that adds support to the posterior vaginal wall by securing the graft to the sacrospinous ligament at the level of the ischial spine. This provides additional support to the weakened pelvic floor muscles and reduces the risk of recurrence.

**Why Each Wrong Option is Incorrect:**
A) Pelvic floor muscle training (PFMT) is beneficial in improving symptoms and function in patients with pelvic floor muscle dysfunction but is inadequate for treating structural prolapse.

B) PFMT + Burch colporrhaphy is a combination therapy that addresses both muscle dysfunction and structural prolapse, but adding sacrospinous ligament fixation further strengthens the support system and is crucial in preventing recurrence.

C) Burch colporrhaphy is a surgical procedure for prolapse treatment, but neglects the sacrospinous ligament fixation, which provides additional support and reduces the risk of recurrence.

D) Burch colporrhaphy + sacrospinous ligament fixation is the correct combination for treating third-degree uterine prolapse, addressing both the structural defect and preventing recurrence.

**Clinical Pearl:**
When treating a third-degree uterine prolapse, performing a Burch colporrhaphy along with sacrospinous ligament fixation ensures comprehensive support to the pelvic floor muscles and weakened pelvic organs, reducing the risk of recurrence. Sacrospinous ligament fixation is crucial in preventing recurrence and maintaining a robust support system for the pelvic organs.