Niklaus Felix Friederich

Prof. Dr. Niklaus Felix Friederich

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Research Focus & Metrics

Academic Career Length

27Years (2000-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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4 February 2011 in BMC Musculoskeletal Disorders
Verified
Journal Article
Open access
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MHMichael T Hirschmann
Michael T Hirschmann
PKPraveen Konala
Praveen Konala
FIFarhad Iranpour
Farhad Iranpour
AKAnna Kerner
Anna Kerner
HRHelmut Rasch
Helmut Rasch
NFNiklaus Felix Friederich
Niklaus Felix Friederich
The purpose of our study was to evaluate the clinical value of hybrid SPECT/CT for the assessment of patients with painful total knee arthroplasty (TKA).

21 April 2006 in Knee Surgery, Sports Traumatology, Arthroscopy
Verified
Journal Article
Closed access
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FGF. Gebhard
F. Gebhard
AEA. Ellermann
A. Ellermann
FHF. Hoffmann
F. Hoffmann
JJJ.‐H. Jaeger
J.‐H. Jaeger
NFNiklaus Felix Friederich
Niklaus Felix Friederich

27 May 2010 in BMC Musculoskeletal Disorders
Verified
Journal Article
Open access
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MHMichael T Hirschmann
Michael T Hirschmann
NZNadia Zimmermann
Nadia Zimmermann
TRThomas Rychen
Thomas Rychen
CCChristian Candrian
Christian Candrian
DHDamir Hudetz
Damir Hudetz
NFNiklaus Felix Friederich
Niklaus Felix Friederich
The purpose of our study was to analyze the clinical and radiological long-term outcomes of surgically treated traumatic knee dislocations and determine prognostic factors for outcome.


8 April 2011 in BMC Sports Science, Medicine and Rehabilitation
Verified
Journal Article
Open access
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CMChristian Mauch
Christian Mauch
MAMarkus P Arnold
Markus P Arnold
AWAndré Wirries
André Wirries
RMRalph R Mayer
Ralph R Mayer
NFNiklaus Felix Friederich
Niklaus Felix Friederich
MHMichael T. Hirschmann
Michael T. Hirschmann
Background: One major concern in the treatment of ACL lesions in children and adolescents with open physes is the risk of iatrogenic damage to the physes and a possibly resulting growth disturbance. Purpose: The primary purpose of this article is to describe our technique of a transphyseal ACL reconstruction using quadriceps tendon-bone autograft in children and adolescents with open growth plates. The secondary aim is to report our early results in terms of postoperative growth disturbances which are considered to be a major concern in this challenging group of patients. It was our hypothesis that with our proposed technique no significant growth disturbances would occur. Methods: From January 1997 to December 2007 49 consecutive children and adolescents with open growth plates were treated for a torn ACL using the aforementioned surgical technique. The patients (28 males and 21 females) with a median age at surgery of 13 (range 8-15) years were retrospectively evaluated. Outcome measures were follow-up radiographs (weight-bearing long leg radiographs of the injured and uninjured knee, anteroposterior and lateral views, a tangential view of the patella and a tunnel view of the injured knee) and follow-up notes (6 weeks, 3, 6, 12 months and until closing of physes) for occurrence of any tibial and/or femoral growth changes. Results: All of the 49 patients had a sufficient clinical and radiological follow-up (minimum 5 years, rate 100%). 48 cases did not show any clinical and radiological growth disturbance. One case of growth disturbance in a 10.5 years old girl was observed. She developed a progressive valgus-flexion deformity which was attributed to a malplacement of the autograft bone block within the femoral posterolateral epiphyseal plate leading to an early localized growth stop. None of the patients were reoperated due to ACL graft failure. Five of the patients underwent revision ACL surgery due to another adequate sports trauma after the growth-stop. The tibial fixation screw had to be removed under local anaesthesia in 10 patients. Conclusions: The described ACL reconstruction technique represents a promising alternative to previously described procedures in the treatment of children and adolescents with open growth plates. Using quadriceps tendon future graft availability is not compromised, as the most frequently used autograft-source, ipsilateral hamstring tendons, remains untouched.

22 July 2010 in BMC Musculoskeletal Disorders
Verified
Journal Article
Open access
PDF file
MHMichael T Hirschmann
Michael T Hirschmann
MHMathias Hoffmann
Mathias Hoffmann
RKRobert Krause
Robert Krause
RJReza-Amir Jenabzadeh
Reza-Amir Jenabzadeh
MAMarkus P Arnold
Markus P Arnold
NFNiklaus Felix Friederich
Niklaus Felix Friederich
The purpose of this prospective consecutive multicenter study was to investigate whether the type of surgical approach (medial parapatellar (MPA) or lateral parapatellar with tibial tubercle osteotomy (TubOT)) influences the early clinical and radiological outcomes of primary total knee arthroplasty (TKA).