M92.4
Juvenile osteochondrosis of patella
Clinical Classification Guidelines
Inclusion Terms
- Osteochondrosis (juvenile) of primary patellar center [Köhler]
- Osteochondrosis (juvenile) of secondary patellar centre [Sinding Larsen]
Medical Intelligence & Overview
Juvenile osteochondrosis of the patella is a condition affecting young individuals, involving abnormal development or degeneration of the cartilage and underlying bone in the kneecap (patella). This disorder typically develops during childhood or adolescence and can lead to knee pain and functional limitations if left untreated. The condition may involve primary or secondary centers of the patella, with specific forms known as Köhler disease (primary center) and Sinding-Larsen disease (secondary center). Recognizing the signs early is important for managing symptoms and preventing long-term issues.
Causes & Symptoms
Clinical Causes: Repetitive stress or overuse of the knee joint, especially in young athletes Rapid growth spurts during adolescence, which can put additional strain on the developing knee Genetic predisposition influencing susceptibility to cartilage and bone changes Trauma or injury to the knee area Poor biomechanics or alignment issues in the lower limbs Inadequate nutrition affecting bone health
Key Symptoms: Knee pain that worsens with activity, particularly during sports or running Tenderness around the kneecap, especially at the lower pole Swelling or inflammation in the front of the knee Weakness or instability in the knee joint Discomfort during movements such as kneeling, jumping, or climbing stairs Possible limping or altered gait to compensate for pain
Diagnostic & Treatment
Diagnosis Path: Medical history review focusing on activity level and symptom onset Physical examination assessing tenderness, swelling, and range of motion Imaging studies such as X-rays to identify changes in the patella’s growth centers MRI scans for detailed visualization of cartilage and bone structure, if necessary Assessment of gait and biomechanical abnormalities
Treatment Protocols: Rest and activity modification to reduce knee stress Application of ice packs to decrease inflammation and pain Non-steroidal anti-inflammatory drugs (NSAIDs) for pain relief Physical therapy focused on strengthening and improving flexibility around the knee Use of knee braces or supports to stabilize the joint Gradual return to activity once symptoms improve, under medical supervision In some cases, surgical intervention may be considered if conservative treatments fail or structural issues are severe
Clinical Advice & FAQs
Billing Guidance
Is M92.4 a billable ICD-10 code?
Yes, M92.4 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report M92.4?
Clinical documentation must specify the nature of Juvenile osteochondrosis of patella and any associated comorbidities for accurate reporting.
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