S82.023S Displaced longitudinal fracture of unspecified patella, sequela

Name of the Condition

• Displaced longitudinal fracture of unspecified patella, sequela

Summary

A displaced longitudinal fracture of the unspecified patella, sequela, refers to a long-term complication resulting from a previous displaced longitudinal fracture of the kneecap. This condition involves a vertical break in the patella where bone fragments remain misaligned, leading to persistent functional impairment or structural changes in the knee joint. The term "sequela" indicates this is a residual effect of the initial injury, rather than an acute event.

Causes

The underlying cause is a prior displaced longitudinal fracture of the patella, typically resulting from direct trauma to the knee, such as a fall, forceful impact, or sudden muscle contraction. The sequela arises as a consequence of incomplete healing, malunion, or persistent displacement of the fracture fragments.

Risk Factors

• Inadequate initial treatment or non-adherence to rehabilitation protocols.
• High-impact activities or sports that stress the knee joint.
• Pre-existing bone conditions like osteoporosis, which may impair healing.
• Advanced age, which can reduce bone density and healing capacity.
• Previous knee injuries or surgeries that compromise joint integrity.

Symptoms

• Chronic knee pain, particularly with weight-bearing or movement.
• Persistent swelling or stiffness in the knee.
• Reduced range of motion, including difficulty straightening or bending the knee.
• Visible or palpable deformity of the kneecap.
• Instability or weakness in the knee during activity.

Diagnosis

A physical examination to assess knee stability, range of motion, and deformity. Imaging studies, such as X-rays, to evaluate bone alignment and healing. CT scans may be used to assess complex malunions or residual displacement. Clinical correlation with the patient’s history of prior patellar fracture is essential.

Treatment Options

• Physical therapy: To improve strength, flexibility, and function.
• Bracing or orthotics: To stabilize the knee and support healing.
• Pain management: Medications or injections to alleviate discomfort.
• Surgical intervention: Considered for severe malunion or functional impairment, involving realignment or fixation of the patella.

Prognosis and Follow-Up

Prognosis depends on the extent of residual displacement, patient age, and adherence to treatment. Most patients experience improved function with therapy, though some may have persistent limitations. Regular follow-up with imaging and clinical assessments is recommended to monitor healing and adjust management as needed.

Complications

• Chronic knee pain or arthritis.
• Persistent instability or weakness.
• Limited range of motion.
• Need for additional surgery due to failed initial treatment.
• Long-term disability affecting daily activities.

Lifestyle & Prevention

• Avoid high-impact activities that stress the knee.
• Engage in low-impact exercises like swimming or cycling to maintain strength.
• Use proper protective gear during sports or activities with fall risks.
• Follow post-injury rehabilitation protocols to optimize healing.

When to Seek Professional Help

Seek care if experiencing worsening pain, increased swelling, new deformity, or inability to bear weight. Prompt evaluation is necessary if symptoms interfere with daily function or if there are signs of infection (e.g., redness, fever) at the fracture site.

Tips for Medical Coders

Document the sequela status clearly, as this code is used for complications arising from a prior displaced longitudinal patellar fracture. Ensure the medical record specifies the relationship between the current condition and the original injury, including any imaging or clinical findings that confirm residual displacement or functional impairment.