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LE Ortho
General Knee Facts
| Question | Answer |
|---|---|
| Three Functions of Meniscus | 1. Increase stability and congruence 2. Load distribution and transmission 3. Shock absorption |
| Name the attachments for the medial meniscus | Semimembranosus and MCL |
| Which region of the meniscus is vascular? avascular? | Outer 1/3 is the RED ZONE (vascular) Inner 2/3 is the WHITE ZONE (avascular) |
| Movement of the meniscus in flex/ext is determined by the __________ Movement of the meniscus in rotation is determined by the _________. | Flex/Ext: movement in direction of tibial plateau Rotation: movement in direction of femoral condyles |
| Describe the shearing action caused on the meniscus when a football player plants and changes direction? (CKC) | Flexion: causes meniscus to move posterior (tibial plateau attachment) External Rotation: causes posterior to move anterior (determined by femoral condyles). |
| Surgical indications for Vascular vs. Avascular portions of mensicus | Blood Supply: meniscal repair Avascular:menisectomy to recreate normal anatomy |
| Age for "normal tears"? How is the meniscus usually injured before this age? | 40 years old. Before 40, meniscus usually requires trauma since it is softer and not as brittle. |
| Signs and symptoms of Meniscal Injury | 1. Posterior joint line pain 2. Effusion 3. Locking and Catching 4. Some would say Mcmurray's sign however it is not as reliable |
| What factors determine treatment progression for pts. with a menisectomy? | Inflammation and pain. Could return to activity in as little as one week, usually 4-6. |
| Which type of tear will often times cause locking in the joint? | Bucket Handle Tear. The other tear we are responsible for is the Longitudinal tear, which if located in the avascular portion would need to be cut out |
| Limitations for Meniscal Repairs post-surgical | 1. Zero or Weight bearing in full extension for 4-6 weeks 2. Avoid HS contractions or adductor exercise for medial mensicus repairs. 3. Limit to 90 degrees of flexion for 4 weeks. |
| 3 Weeks post-op: SLR's | Med.: Not in extension or adduction Lat: Yes in all 4 directions |
| 3 Weeks post-op: OKC: Knee Extension | Yes from 90º-0º |
| 3 Weeks post-op: CKC Partial squats | No. Cannot weight bear into flexion |
| 3 Weeks post-op: Standing Hamstring Curls | Medial: NO Lateral: YES |
Created by:
Phillypino
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