Dislocation is among the common causes of pain after hip replacement, according to News Medical. Dislocation occurs because artificial implants are smaller than natural hips. The ball of the implant does not fit perfectly into its socket and may come out.
Post surgery pain also occurs from the rejection of artificial implants by the patient’s body. Implants are often rejected by the body because of the material from which they are made. This causes inflammation and pain around the affected hip and thigh area. Consequently, the hip bone is left exposed, and the hip joints become loose. This problem can be treated through the administration of drugs or revision surgery, depending on the extent of damage, as reported by the National Institute of Arthritis and Musculoskeletal and Skin Diseases.
Chronic pain after hip replacement surgery also occurs as a result of irritation or damage to the sciatic nerve, indicates Health Central. Damage to the sciatic nerve can occur during the hip replacement surgery. Irritation of the sciatic nerve is more common in patients with underlying medical conditions such as spinal stenosis. For this reason, doctors closely monitor the amount of pressure and stress applied on the sciatic nerve during surgery.
Failure of artificial hip implants can also result in post surgery pain. Failure often manifests in the loosening of implant hardware, states Health Central. This affects the stability of the patient and causes pain around the hip and thigh area. Failure of artificial metal implants produces metal debris responsible for chronic pain around the surgery area. Pain emanating from implanting hardware problems is often eliminated through revision surgery.