What Is the Renal Fascia?
Located outside the renal fat sac, is the connective tissue membrane that coats the adrenal glands and the periphery of the kidneys. From this membrane, the trabeculae penetrates into the fat capsule and connects with the fibrous membrane, which has the effect of fixing the kidney. The fascia located before and after the kidney are called the prerenal fascia and the posterior renal fascia. They are above each other above the adrenal gland and at the outer edge of the kidney, and separate from each other below the kidney. Migration with ureter passing.
- Chinese name
- Renal fascia
- Also known as
- Gerota Fascia
- Subject
- medicine
- Features
- Migration of extraperitoneal tissue
- Located outside the renal fat sac, is the connective tissue membrane that coats the adrenal glands and the periphery of the kidneys. From this membrane, the trabeculae penetrates into the fat capsule and connects with the fibrous membrane, which has the effect of fixing the kidney. The fascia located before and after the kidney are called the prerenal fascia and the posterior renal fascia. They are above each other above the adrenal gland and at the outer edge of the kidney, and separate from each other below the kidney. Migration with ureter passing.
Renal Fascia I. Overview:
- 1. It is formed by the subperitoneal fascia, which is considered to be a continuation of the transverse abdominal fascia. It is wrapped outside the renal fat sac and is divided into two layers: the anterior layer is called the anterior renal fascia, which is thinner on the inside, and is continuously connected to the contralateral one by the renal blood vessels, abdominal aorta, and inferior vena cava; The fascia becomes heavier with the lumbar fascia and is attached to the spine behind the medial renal pedicle. The anterior and posterior renal fascia heals above the adrenal gland and connects with the subfascial fascia; it also heals each other on the outer side of the kidney; it separates from each other below the kidney and passes through the ureters.
- 2. One of the renal capsules, located in the outermost layer of the kidney. From the extraperitoneal tissue, it forms a capsule that encloses the kidneys, adrenal glands, and fatty tissue that surrounds them. A small bundle is emitted from the capsule and passes through the fat to the renal fibrous membrane. This membrane has a supporting and fixing effect on the kidneys. If the renal fascia is imperfect or damaged, the position of the kidney may be shifted downward due to the relationship of gravity, resulting in renal sagging.
Renal fascia
- 1. Swimming kidney is also called "moving kidney". Due to the poor development of the fixed device of the kidney, the renal pedicle is too long, and the kidney can move automatically in the retroperitoneal space, which is called swimming kidney. More common on the right, but can also be bilateral. It is mostly asymptomatic clinically, but symptoms such as backache, kidney pain, stretch pain, and even colic may also occur. In severe cases, radiation is along the ureter. Symptoms can be exacerbated by walking, standing, sedentary or tired. Pain also worsens during menstruation or constipation, and occasionally hematuria occurs.
- 2. The left and right and up and down movements of the kidney increase, exceeding the normal range, which is called a swimming kidney. Due to the large range of renal activity, it is often accompanied by varying degrees of ureteral flexion and hydronephrosis. X-ray manifestations: Compared with flat film in the supine position, the upper and lower motion range of the kidney shadow is more than one vertebral body, and there is lateral displacement. During intravenous urography, the renal pelvis and kidney calyx have different degrees of stagnant water, the junction of the kidney and ureter is bent, and the activity of the kidney is particularly large compared with the plain film of the supine position.
Renal fascia
- Renal droop means that bilateral kidneys fall more than 4 cm when erect. Most occur in women aged 20 to 40 and those who are elongated. There are more to the right than to the left. Mainly manifested as low back pain, increased labor and walking, disappeared after lying flat. When the renal pedicle is twisted, the Dietl crisis occurs, that is, renal colic, nausea, vomiting, fast pulse and even hypertension, hematuria, etc. Renal droop sometimes leads to celiac nerve disorders, manifested as indigestion, bloating, belching, nausea, and vomiting. Should be identified with abdominal mass. X-ray and ultrasound can help diagnosis. Generally does not require treatment. In severe cases, renal suspension fixation was performed.
- Clinical symptoms caused by excessive kidney movement. Due to too little adipose tissue in the retroperitoneum, lax abdominal wall or too shallow kidney sockets, the kidneys can move downwards when standing, and the kidneys sag when they move more than one vertebral body thickness. Those who move too much and can move left and right are swimming kidneys. Often accompanied by sagging of the stomach or the whole viscera. More common in height, weight loss and prolific women. More common on the right. No symptoms, or low back pain or upper abdominal mass. Very few patients have renal colic. Orthostatic and supine urography can be diagnosed based on the degree of renal displacement. Those with symptoms can exercise abdominal muscles to increase weight or use non-surgical treatment such as abdominal bands. In severe cases, renal fixation is required.
- Because the two layers of the kidney fascia are not healed well below, the kidneys cannot be fixed well, so the kidneys will walk down abnormally. When standing upright, its drop may exceed 3 cm. As the kidneys travel downstream, the adrenal glands remain in place because the adrenal glands are in separate fascial compartments and adhere tightly to the ridges. Renal droop (kidneys go downstream) is different from ectopic kidney (renal congenital dislocation): the former has a normal ureteral length, but is loosely coiled or twisted due to the short distance between the kidney and the bladder. The ureteral torsion does not cause serious consequences, but pulling the renal blood vessels often causes intermittent pain in the renal area, and pain in the supine position can be relieved. The lack of support below the kidneys in the lumbar region is one of the reasons why kidney transplantation places the kidneys in the pelvic cavity of the pelvic cavity (the other reason is that there are large blood vessels available and close to the bladder for easy connection with the bladder).