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Jan Fridén

Professor emeritus

Jan Fridén
Professor emeritus

Department of Orthopaedics at Institute of Clinical Sciences (More Information)
Göteborgsvägen 31
431 80 Mölndal
Visiting Address: R-huset, plan 7 , 431 80 Mölndal

About Jan Fridén

Professor Fridén has a Ph.D. in Muscle Anatomy and more than 30 years of research on muscle structure and function with a focus on experimental and clinical studies of reconstructive tendon transfer surgery. Briefly, tendon transfer procedures restore elbow and wrist extension, improve hand grip control, restore joint balance, reduce pain in spasticity and prevent joint contractures. The evolution towards more motions driven by active motors has increased the need for tools to accurately determine and set the optimal length and tension of the transferred donor muscles. Professor Fridén and his research group has demonstrated in several studies that the choice of optimal donor muscle as well as methods for determining optimal length-tension relationships should be based on a thorough understanding of the biomechanical principles during reconstructive surgery.

Professor Fridén has developed a laser-based technique that allows for intra-operative measurement of sarcomere length. To determine physiological sarcomere length ranges, intraoperative measurement is performed using an optical modification of a laser device. The use of intra-operative sarcomere length measurements to predict and set the optimal muscle-tendon unit length during reconstructive upper limb surgery is, based on our preliminary data, a new and promising tool to improve outcome of reconstruction

Professor Fridén has also performed seminal work on the biomechanics of tendon transfer procedures. He has described the architecture of the most suitable donor muscles in many procedures together with optimal routes for the donor muscle tendons, refinements of tendon-to-tendon attachment techniques and developments of completely new strategies to reconstruct motor function in tetraplegia and peripheral nerve injuries.

In summary, Professor Fridén´s research has provided primary data on the passive and active mechanical properties at micro and macro level of upper extremity muscles. The resulting muscle mechanics database aids surgeons in their decision-making strategies in tendon transfer for reconstruction of arm and hand motions and for correction of deformities

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Latest publications

Reach out and grasp the opportunity: reconstructive hand surgery in tetraplegia
Jan Fridén, R. L. Lieber
Journal of Hand Surgery-European Volume, Journal article 2019
Journal article

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Showing 81 - 90 of 101


[Nerve and muscle transfer surgery to restore paralyzed elbow function]
A. Gohritz, Jan Fridén, M. Spies, C. Herold, M. Guggenheim et al.
Unfallchirurg, Journal article 2008
Journal article


Ersatzoperationen bei Ausfall motorisher Funktionen an der Hand
A Gohritz, Jan Fridén, C Herold, M Aust, M Spies et al.
Der Unfallchirurg, Journal article 2007
Journal article

Tenodes des Daumenendgelenks mit geteilter Flexor-pollicis-longus-Sehne
A Gohritz, Jan Fridén, C Herold, M Spies, P M Vogt
Der Unfallchirurg, Journal article 2007
Journal article


[Hand tendon injuries]
Peter Axelsson, Jan Fridén
Läkartidningen, Review article 2006
Review article

Stress-dependent and -independent expression of the myogenic regulatory factors and the MARP genes after eccentric contractions in rats
E. R. Hentzen, M. Lahey, D. Peters, L. Mathew, I. A. Barash et al.
J Physiol, Journal article 2006
Journal article

Rotator cuff muscle architecture: implications for glenohumeral stability
S. R. Ward, E. R. Hentzen, L. H. Smallwood, R. K. Eastlack, K. A. Burns et al.
Clin Orthop Relat Res, Journal article 2006
Journal article

Passive muscle-tendon amplitude may not reflect skeletal muscle functional excursion
Jan Fridén, S. R. Ward, L. Smallwood, R. L. Lieber
J Hand Surg [Am], Journal article 2006
Journal article

Showing 81 - 90 of 101

Page Manager: Katarina Olinder Eriksson|Last update: 9/5/2013

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