Obstructed Defecation: Obstructed defecation is difficulty getting bowel movements out of the body. Although the stool reaches the rectum, or bottom of the colon, the patient has difficulty emptying. This often makes patients feel that they need to go the bathroom more often, or that they cannot empty completely, as if stool remains in their rectum. Obstructed defecation may be caused by pelvic floor prolapse (discussed below), pain symptoms or muscles not functioning normally.
The pelvic floor muscles support various pelvic organs, including the bladder, prostate, rectum, and female reproductive organs. The muscles themselves are also involved in the functioning of the urinary and anal sphincters. When they are functioning normally, you are able to control your bowel and bladder movements by contracting and relaxing these muscles.
^ Mateus-Vasconcelos, Elaine Cristine Lemes; Ribeiro, Aline Moreira; Antônio, Flávia Ignácio; Brito, Luiz Gustavo de Oliveira; Ferreira, Cristine Homsi Jorge (2018-06-03). "Physiotherapy methods to facilitate pelvic floor muscle contraction: A systematic review". Physiotherapy Theory and Practice. 34 (6): 420–432. doi:10.1080/09593985.2017.1419520. ISSN 0959-3985. PMID 29278967. S2CID 3885851.
There are various procedures used to address prolapse. Cystoceles are treated with a surgical procedure known as a Burch colposuspension, with the goal of suspending the prolapsed urethra so that the urethrovesical junction and proximal urethra are replaced in the pelvic cavity. Uteroceles are treated with hysterectomy and uterosacral suspension. With enteroceles, the prolapsed small bowel is elevated into the pelvis cavity and the rectovaginal fascia is reapproximated. Rectoceles, in which the anterior wall of the rectum protrudes into the posterior wall of the vagina, require posterior colporrhaphy.
^ Bernard, Stéphanie; Ouellet, Marie-Pier; Moffet, Hélène; Roy, Jean-Sébastien; Dumoulin, Chantale (April 2016). "Effects of radiation therapy on the structure and function of the pelvic floor muscles of patients with cancer in the pelvic area: a systematic review". Journal of Cancer Survivorship. 10 (2): 351–362. doi:10.1007/s11764-015-0481-8. hdl:1866/16374. ISSN 1932-2259. PMID 26314412. S2CID 13563337.
Biofeedback is a modality that allows you to learn how to better control your muscles for optimal function. Biofeedback shows you what your muscles are doing in-real time. It is helpful to teach patients to lengthen and relax the pelvic floor for issues like general pelvic pain, painful sexual activity and constipation or to contract the pelvic floor in order to prevent leakage with activities like coughing, laughing, lifting, running or moving heavy objects. However, biofeedback does not demonstrate shortened muscles and tissues; therefore, in certain cases the biofeedback may seem to be within normal limits but yet the patient has 10/10 pain. In these incidences, manual palpation is more appropriate to identify restricted and shortened tissues and muscles, and myofascial trigger points.
Neural mobilization as the name implies, involves the restoration of neural structures back to their normal mobility: to glide and slide. Neural structures that cannot move properly can cause pain that can radiate down an extremity or into the trunk and can give the sensation of burning, zinging, and stabbing. Some orthopedic therapists practice this type of mobilization; common examples include the sciatic nerve in the leg and the ulnar nerve in the arm. Pelvic floor PTs focus on these nerves when they cause issues, but they also pay attention to nerves that innervate the perineum and genital region (bicycle seat area), such as the pudendal, iliohypogastric, obturator, ilioinguinal, genitofemoral and the femoral cutaneous nerves. By allowing these nerves to move freely, symptoms such as vulvovaginal, penile, rectal, clitoral and testicular pain, itching and burning can be greatly improved.
Once patients with pelvic floor constipation have these basic tools, they can begin retraining the pelvic floor muscles with biofeedback. Based on the principle of operant conditioning, biofeedback provides auditory and visual feedback to help retrain the pelvic floor and relax the anal sphincter. Biofeedback training is the treatment of choice for medically refractory pelvic floor constipation, with some studies showing improvement in more than 70 percent of patients. Patients also learn to identify internal sensations associated with relaxation and long-term skills and exercises for use at home.
Pelvic floor dysfunction can be diagnosed by history and physical exam, though it is more accurately graded by imaging. Historically, fluoroscopy with defecography and cystography were used, though modern imaging allows the usage of MRI to complement and sometimes replace fluoroscopic assessment of the disorder, allowing for less radiation exposure and increased patient comfort, though an enema is required the evening before the procedure. Instead of contrast, ultrasound gel is used during the procedure with MRI. Both methods assess the pelvic floor at rest and maximum strain using coronal and sagittal views. When grading individual organ prolapse, the rectum, bladder and uterus are individually assessed, with prolapse of the rectum referred to as a rectocele, bladder prolapse through the anterior vaginal wall a cystocele, and small bowel an enterocele.
To assess the degree of dysfunction, three measurements must be taken into account. First, an anatomic landmark known as the pubococcygeal line must be determined, which is a straight line connecting the inferior margin of the pubic symphysis at the midline with the junction of the first and second coccygeal elements on a sagittal image. After this, the location of the puborectalis muscle sling is assessed, and a perpendicular line between the pubococcygeal line and muscle sling is drawn. This provides a measurement of pelvic floor descent, with descent greater than 2 cm being considered mild, and 6 cm being considered severe. Lastly, a line from the pubic symphysis to the puborectalis muscle sling is drawn, which is a measurement of the pelvic floor hiatus. Measurements of greater than 6 cm are considered mild, and greater than 10 cm severe. The degree of organ prolapse is assessed relative to the hiatus. The grading of organ prolapse relative to the hiatus is more strict, with any descent being considered abnormal, and greater than 4 cm being considered severe.
Pelvic floor dysfunction is an umbrella term for a variety of disorders that occur when pelvic floor muscles and ligaments are impaired. Although this condition predominantly affects females, up to 16% of males suffer as well. Symptoms include pelvic pain, pressure, pain during sex, incontinence, incomplete emptying of feces, and visible organ protrusion. Tissues surrounding the pelvic organs may have increased or decreased sensitivity or irritation resulting in pelvic pain. Underlying causes of pelvic pain are often difficult to determine. The condition affects up to 50% of women who have given birth.
Stephanie Prendergast, a pelvic floor physical therapist who is a co-founder and LA’s clinical director of the Pelvic Health & Rehabilitation Center, says that while information on pelvic floor issues isn’t always easily accessible, doctors can spend some time online looking at medical journals and learning about different disorders so they can better treat their patients.