The oblique muscles are often thought of as the waist muscles. They contribute to pain on your side in the rib cage and waist area, lower abdomen, groin, and pelvis. They can also contribute to heartburn, indigestion, bladder pain and incontinence, and testicle pain.
The latissimus dorsi muscle can contribute to pain in the shoulder, upper back, and arm going down into the hand. The muscle can also cause pain in the side of the ribcage and lower abdomen. It is the muscle that most often causes the 'side stitch'.
The serratus posterior inferior muscle contributes to pain in the lower back between the bottom of the ribs and the top of the hip. Pain is increased when you twist the torso, bend over, and stretch to reach overhead.
The rectus abdominis contributes to pain in the area around the sternum, across the upper back, across the buttocks, the lower abdomen, the pelvis. and testicles. It can also contribute to heartburn, indigestion, feeling bloated as well as mimicking urinary tract infection pain.
The quadratus lumborum muscle is known for sharp pain in the lower back and aching hip pain. Contributes to pain in the buttocks, groin and abdominal areas.
The piriformis muscle contributes to pain in the low back, buttocks, hip, and hip joint, pelvic area, and pain down the back of the thigh.
The gluteus maximus is the large muscle of the buttock. It contributes to low back, hip joint, and tailbone area. The muscles can also cause a burning and tingling sensation.
The iliocostalis lumborum can contribute to pain in the lower back, hip, buttock and occasionally the abdomen. The pain is often a deep aching pain that feels as though it originates in the hip or buttock.
The iliopsoas muscles can contribute to lower back, abdomen, groin, upper leg, and pelvic pain. Standing from a sitting position is painful.
The gluteus medius is located in the hip and buttocks. It can contribute to pain in the low back, hip, buttock, and down the outside of the upper leg.
The soleus muscle can cause and contribute to pain in the heel, ankle and back of the knee. It can also cause pain in the low back on the same side of the affected leg. Dysfunction of the soleus muscle can also contribute to swelling in the foot and ankle. Occasionally a trigger point at the bottom and outside of the muscle can contribute to pain in the jaw and side of the head.
The iliocostalis thoracis muscle can contribute to pain in the chest, upper back, lower back, and abdomen. Pain tends to be more concentrated around the shoulder blade and / or low back kidney area.
The longissimus thoracis muscle contributes to deep aching pain in the lower back, hip and buttocks. Rising from a sitting to a standing position can cause an extreme feeling of stiffness and a deep aching pain.