Semimembranosis Tendonitis M76.899

ICD-10 Classification / Treatment
Etiology / Natural History Associated Injuries / DDx
Anatomy Complications
Clinical Evaluation Follow-up Care
Xray / Diagnositc Tests Review References

synonyms:semi-t tendinitis, semimembranosis tendinosis, semimembranosus tendinopathy, semimembranosis

Semimembranosus Tendinitis ICD-10 

Semimembranosus Tendinitis Etiology / Epidemiology / Natural History

  • Most commonly occurs in male athletes during their fourth decade of life.
  • More common in running and cycling
  • May occur after TKA, generally in patients with large varus deformity correction at surgery. 
  • Related to recurrent irritation of the semimembranosus tendon as it slides over the medial corner of the medial femoral condyle

Semimembranosus Tendinitis Anatomy


Semimembranosus Tendinitis Clinical Evaluation

  • Postero-medial knee pain.
  • Pain along the semimembranosus insertion in the tibial.  May be worse with stairs or deep knee bend. 
  • Tenderness over the pes anserine / tibial sertion of the semimembranosus.

Semimembranosus Tendinitis Xray / Diagnositc Tests

  • Knee xrays normal
  • MRI may demonstrate increased signal along the semimembranosus tendon. 
  • Consider diagnostic injection of local anesthetic into Semimembranosis insertion.  Relief of pain indicates semimembranosus tendinitis

Semimembranosus Tendinitis Classification / Treatment

  •  Ice, Nsaids, Hamstring stretching and stengthening, consider formal physical therapy. 
  • Consider release/excision of the reflected portion of the semimembranosus tendon in patients who have failed conservative treatment. 

Semimembranosus Tendinitis Associated Injuries / Differential Diagnosis


Semimembranosus Tendinitis Complications

  • Incomplete relief of pain
  • Incomplete return of function

Semimembranosus Tendinitis Follow-up Care


Semimembranosus Tendinitis Review References

  • Hendel D, Acta Orthop Scand 2003;74(4):429-430