Post-Hip Replacement Complications: Bone Fractures and Leg Length Discrepancy - Orthopedics

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Postoperative hip joint fracture?


Hello Dr.
Tsai, I would like to consult you.
In November of last year, I underwent surgery to replace my left hip joint.
Post-operative X-rays during follow-up visits showed everything was normal.
On December 17, I used a walker to go up and down stairs.
However, during my follow-up on January 7, X-rays revealed a fracture in the bone where the screws were inserted.
The doctor advised me to use a wheelchair and walker.
At the beginning of this month, I started using a single cane and began learning to walk again.
I noticed that my walking is limping, and when standing, my left leg appears to be 4 centimeters shorter.
Dr.
Tsai, could this shortening be caused by the fracture leading to the screw being pushed down? This is my concern.
I have osteoporosis with a density of 2.4 and have been receiving injections of bone-strengthening medication as prescribed by my doctor, along with calcium supplements for six months.
After normal meals, I consume one egg and a serving of collagen daily.
The X-ray in May showed that the bone has healed.
My biggest worry now is the discrepancy in leg length and the weakness in my left leg, which is 4 centimeters shorter.
I have communicated this to my doctor, and the conclusion is that I may need another surgery.
I am very afraid of going through a similar experience again.
Dr.
Tsai, could you please provide me with some good advice? Thank you.

Lao Huang, 60~69 year old female. Ask Date: 2016/06/26

Dr. Cai Shanglin reply Orthopedics


If everything was normal immediately after the surgery but later developed a leg length discrepancy, this indicates that the prosthetic joint may be loose or sinking.
Generally, a revision surgery is recommended in such cases.
This time, the procedure would theoretically involve the use of bone cement for fixation to reduce the risk of loosening.
It is advisable to return to the original physician for a thorough discussion.

Reply Date: 2016/06/26

More Info


Post-hip replacement surgery complications can be quite concerning, especially when they involve issues like bone fractures and leg length discrepancies. In your case, it seems that you have experienced a fracture at the site of the inserted hardware, which can indeed lead to complications such as leg length discrepancy and altered gait.

Firstly, it is important to understand that a hip replacement surgery involves the insertion of prosthetic components that are anchored to the bone, often using screws or pins. If a fracture occurs in the bone surrounding these components, it can potentially affect the stability of the implant and the alignment of the leg. In your situation, the X-ray findings of a fracture in the bone where the hardware is inserted could indeed lead to the hardware shifting or becoming less effective, which might explain the 4 cm discrepancy you are experiencing in leg length.

Leg length discrepancy after hip replacement can occur for several reasons. One common reason is the positioning of the prosthetic components during surgery. If the components are not aligned correctly, it can lead to one leg appearing shorter than the other. Additionally, if there is a fracture or if the bone has not healed properly, it can also contribute to this discrepancy. In your case, the fracture may have caused the hardware to shift downward, resulting in the perceived shortening of your leg.

Your concern about the weakness in your left leg and the limping gait is also valid. After a hip replacement, it is not uncommon for patients to experience weakness in the operated leg, especially if there have been complications such as fractures. The muscles around the hip joint may take time to strengthen and adapt after surgery, and any additional complications can prolong this recovery process.

Regarding your osteoporosis, it is crucial to manage this condition effectively, as it can significantly impact bone healing and overall recovery. The use of medications like bone stabilizers and calcium supplements is essential, and it is good to hear that you are following your physician's recommendations. However, it is also important to engage in weight-bearing exercises, as tolerated, to help strengthen the bones and improve muscle function.

As for your fear of undergoing another surgery, it is understandable. Surgical interventions can carry risks, especially in patients with a history of complications. However, if your physician has recommended another surgery, it is likely because they believe it is necessary to address the issues you are facing. It may be beneficial to discuss your concerns with your doctor, including the risks and benefits of the proposed surgery, as well as any alternative treatments that may be available.

In the meantime, consider focusing on rehabilitation exercises that can help improve strength and stability in your leg. Physical therapy can be incredibly beneficial in addressing gait issues and helping you regain confidence in your mobility. Additionally, using assistive devices, such as a cane or walker, can provide support as you work on your balance and strength.

In summary, the complications you are experiencing after your hip replacement surgery, including the fracture and leg length discrepancy, are significant and warrant careful management. Open communication with your healthcare provider is essential to ensure that you receive the appropriate care and support during your recovery. It is crucial to address both the physical aspects of your recovery and any emotional concerns you may have about future surgeries.

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