Select the INCORRECT match.

Options

A. Clavicle - S-shaped collar bone having flat medial part and cylindrical outer parts.
B. Scapula -a large triangular bone situated dorsolaterally over `2^(nd) " to" 7^(th)` rib.
C. Acetabulum - a cavity formed by the fusion of illum, ischium and pubis.
D. Partella - cup shaped sesamoid bone making knee joint

Answer

To solve the question, "Select the INCORRECT match," we will analyze each option provided and determine which one does not correctly describe the anatomical structure mentioned.

### Step-by-Step Solution:

1. **Analyze Option 1: Clavicle**
- The statement describes the clavicle as having a "flat medial part and cylindrical outer parts."
- The clavicle is commonly known as the collarbone, but it is actually S-shaped, not flat and cylindrical.
- **Conclusion**: This statement is incorrect.

2. **Analyze Option 2: Scapula**
- The statement describes the scapula as a "large triangular bone situated dorsolaterally over the second to seventh rib."
- This description is accurate as the scapula is indeed a large triangular bone located in that region.
- **Conclusion**: This statement is correct.

3. **Analyze Option 3: Acetabulum**
- The statement describes the acetabulum as a cavity formed by the fusion of ilium, ischium, and pubis.
- This is a correct description, as the acetabulum is the socket of the hip joint formed by these three pelvic bones.
- **Conclusion**: This statement is correct.

4. **Analyze Option 4: Patella**
- The statement describes the patella as a "cup-shaped sesamoid bone which forms a knee joint."
- This is also a correct description, as the patella (kneecap) is indeed a sesamoid bone that protects the knee joint.
- **Conclusion**: This statement is correct.

### Final Answer:
The incorrect match is **Option 1: Clavicle**.

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