Orthopaedics and Traumatology · MU Plovdiv

42. Soft tissue injuries of the knee joint

Inside: 6 sections · 1 labelled picture · 15 flashcards · 5 min

Topic 42 of 43 in the MU Plovdiv syllabus for Orthopaedics and Traumatology (Medicine, Year 4). The free AceMed note covers it in 6 sections, about 739 words (5 min of reading), with 15 flashcards.

In this note

  1. Essay 42- Soft tissue injuries of the knee joint
  2. Injury of menisci
  3. Rupture of medial collateral ligament
  4. Rupture of the lateral collateral ligament
  5. Injuries of the cruciate ligaments
  6. Hoffa disease

Essay 42- Soft tissue injuries of the knee joint

General information

  • Any trauma to the soft tissue structures leads to a certain extent of joint instability
  • The stabilising structures of the knee are divided into:
  • Static stabilisers- includes meniscus, collateral ligaments, crucial ligaments, meniscus femoral ligament and dorsal capsular structures
  • Dynamic stabilisers- quadriceps, gastrocnemius, popliteus, iliotibial tract and ischio-crucial musculature

Injury of menisci

General info

  • The lesion on the medial meniscus are more frequent than lesions to the lateral because the medial meniscus is fused with the articular capsule and with the medial collateral ligament making it less mobile

Etiology (mechanisms)

  • Torsion motion of femur towards shank causes knee joint to move from semi flexion to complete extension
  • Medial meniscus slides back and forth and the condyles may be damaged during this
  • Types of damage could be:
  • Transchordal
  • Detachment of meniscus from capcule
  • Transverse lesion
  • Longitudinal to the anterior or posterior horn

Symptoms

  • Swollen joint
  • Pain
  • Restriction of movement
  • If joint is blocked, it takes a flexed position
  • Extension provokes pain and spring resistance
  • Symptom of Steinmann- knee is extended, there is pain upon palpation in the anterior area of the joint space and when patient flexes, the pain move along articular space
  • Symptom of Payer- patient cant sit with legs crossed or finds it very painful
  • Symptom of Chakin- hypotrophy of quadriceps
  • Symptom of Apley- patient lies on stomach. Knee is flexed to 90 degrees. Foot is pulled and rotated then pressed and rotated towards knee!
  • This provokes pain!

Treatment

  • Conservative in the beginning when there are symptoms of distortion
  • Immobilisation for 10-12 days
  • In cases of blockage- unblocking via immobilisation with tutor splint
  • Nowadays, meniscus surgery is done via arthroscopy!

Complications

  • Articular cartilage damage
  • Degenerative chondrotic changes
  • Locking of knee

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