Muscle injury: includes strains, pulls and bruises causing damage to the muscle resulting in acute or prolonged pain.
Tendon injury: tendon disorders are often caused by repetitive or frequent activities and awkward postures. Excessive repetition and movement can cause tendons to tear or even rupture. This can result in inflammation and pain.
Nerve injury: repetitive motions and awkward postures can cause nerves to become swollen and inflamed. This results in muscle weakness, numbness, and sensations of pins and needles.
Bone injury: typically a fractured bone. It can range from a thin crack to a complete break. Bones can fracture crosswise, lengthwise, in several places, or into many pieces. Most fractures happen when the force of impact to a bone is more pressure than it can support.
Ligament injury: Ligaments play an important role in supporting the bones and joints in your body. Damage can lead to joint instability. Any sudden force affecting the ligaments can result in tears or, in more severe cases, a complete rupture.
Back pain: a term used to describe MSK disorders that affect the bones, cartilange, ligaments, discs, nerves and muscles around the spine.2