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Posterior corner reconstruction is a relatively new technique which aims to rebuild the posterior aspect of the knee following injury to structures behind the knee joint.

The structures behind the knee are not commonly injured as it takes a high impact trauma or hyperextension injury to damage them. Posterior corner reconstructions are therefore most commonly seen in the sporting population. Physical examination or investigation looks at the ligaments and muscles behind the knee to identify any instability.

Stability and strength training for the knee, supervised by a MSK PhysiotherapistAbove: Stability and strength training for the knee, supervised by a MSK Physiotherapist

Posterior Corner Reconstruction Indications

Posterior corner reconstruction of the knee is indicated after a physical examination, MRI or arthroscopy once the extent of damage has been confirmed. If the injury is severe surgery will be indicated immediately. Otherwise, surgery is only indicated once conservative management has failed. Conservative treatment involves complete rest to allow for healing for grade one and two tears.

Posterior Corner Reconstruction Procedure

Surgery for posterior corner reconstruction depends on if the injury is acute or chronic and if it is an isolated posterolateral injury or combined with ligamentous injury

Mobilisations of the knee joint during an assessment by a MSK therapistAbove: Mobilisations of the knee joint during an assessment by a MSK therapist

Surgical repair is aimed at anatomical reconstruction rather than non-anatomical reconstruction where possible, for more chance of a successful rehabilitation.
  • Acute Isolated Posterolateral Injury – Surgery attempts to reconnect affect structures by sutures or wires.
  • Acute Combined Posterolateral Injury – The other structures damaged will be reconstructed alongside posterolateral repair in order to be able to begin range of movement exercises post-surgery. This type of surgery avoids the build-up of excessive scar tissue (arthrofibrosis).
  • Chronic Isolated Posterolateral Injury – In chronic conditions, surgery begins with an opening wedge osteotomy which is where a cut is made in the bone to make a wedge shaped opening to improve its alignment. An MRI scan shows the repairable structures for reconstruction. If structures cannot be reconstructed a tissue graft (autograft) will be performed to restore stability of damaged structures.
  • Chronic Combined Posterolateral Injury – This type of surgery is performed as above with an opening wedge osteotomy and the repairing of all structures at the same time to avoid arthrofibrosis of the joint.
Surgery for posterior corner reconstruction is generally successful assuming there is adherence to physiotherapy treatment following surgery.

Stability and strength training for the knee, supervised by a MSK PhysiotherapistAbove: Stability and strength training for the knee, supervised by a MSK Physiotherapist

The Benefits Post Surgery

There are many benefits following a posterior corner reconstruction.

Benefits of posterior corner reconstruction include:
  • Regained functional activity
  • Independence
  • A reduction or complete elimination of pain
  • Restoration of movement and muscle strength
  • A normal gait pattern
  • Return to sports
To achieve the above benefits contributing to an overall improved quality of life, physiotherapy is the key to gaining your maximum rehabilitation potential.

Patella mobilisations performed by MSK PhysiotherapistAbove: Patella mobilisations performed by MSK Physiotherapist

Physiotherapy Rehabilitation Post Surgery

Following a period of non-weight bearing as instructed by your surgeon, physiotherapy rehabilitation is essential in regaining optimum function.

Your post-surgery protocol may include:
  • Range of movement exercises
    You will begin with gentle range of movement exercises to relieve joint stiffness and muscle tightness.
  • Joint mobilisations
    Joint mobilisations will help lubricate the knee joint and reduce stiffness and pain.
  • Strenghening exercises
    Strengthening exercises are vital in regaining full function and gait.
  • Sport specific training
    If you would like to return to sport, our physiotherapists can teach you specific exercises and drills to build up to your previous level.
If you would like physiotherapy following a posterior corner reconstruction you can e-mail or call 0330 088 7800 to book an assessment.

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