[Talonavicular arthrodesis].

Objective: Realignment of the hindfoot by talonavicular arthrodesis.

Indications: Idiopathic and posttraumatic arthritis of the talonavicular joint with or without malalignment. Optional in flatfoot reconstruction.

Comparison of the European Foot and Ankle Score (EFAS) and the Self-Reported Foot and Ankle Score (SEFAS) in patients with foot and ankle surgery.

Background: The European Foot and Ankle Score EFAS and the Self-reported Foot and Ankle Score SEFAS are two Patient Reported Outcome Measures (PROMs) used in foot and ankle surgery. The EFAS has been published in recent years, while the SEFAS is a validated questionnaire based on the New Zealand total ankle questionnaire.

Methods: We compared the EFAS to the SEFAS, Short Form 36 (SF-36) and Numeric Rating Scale (NRS) regarding reliability and validity based on the results of 126 patients undergoing foot and ankle surgery in a single center.

Reliability and validation of the German Achilles tendon Total Rupture Score.

Purpose: Patient-related outcome measures (PROMs) are important instruments to evaluate efficacy of orthopaedic procedures. The Achilles tendon Total Rupture Score (ATRS) is a PROM developed to evaluate outcomes after treatment of Achilles tendon ruptures (ATRs). Purpose of this study is to develop and culturally adapt the German version of the ATRS and to evaluate reliability and validity.

Open vs Minimally Invasive Resection of the First Metatarsocuneiform Joint: An Anatomical Study.

Background: The modified Lapidus arthrodesis is a standard procedure to correct middle to severe hallux valgus (HV) deformities. Recently, minimally invasive techniques of first metatarsocuneiform joint (MCJ) resection using a Shannon burr were described. The primary goal of this study is to compare the anatomical efficacy and safety of first MCJ resection using a straight 2 × 13-mm Shannon burr and minimally invasive technique (MIS) vs an open technique using an oscillating saw.

Comparative results of arthroscopic ankle arthrodesis vs. open arthrodesis in patients with diabetes-associated Charcot Neuro-Arthropathy.

Background: Several studies demonstrated a considerable complication rate for open ankle or TTC arthrodesis in patients with diabetes, revision surgery and ulceration. Extensive approaches in combination with multimorbide patients have been suggested as the rationale behind the increased complication rate.

Methods: Single-centre, prospective case-control study compared arthroscopic vs.

[Treatment of Achilles insertional calcific tendinosis using a longitudinal midline incision approach/central tendon splitting approach].

Objective: Treatment of Achilles insertional calcific tendinosis through a longitudinal midline incision approach with optional resection of the retrocalcaneal bursa and calcaneal tuberosity (Haglund's deformity).

Indications: Calcific Achilles tendinosis, dorsal heel spur, insertional tendinosis.

Contraindications: General medical contraindications to surgical interventions.

L4/5 accessibility for extreme lateral interbody fusion (XLIF): a radiological study.

Introduction: Potential advantages of the Extreme Lateral Interbody Fusion (XLIF) approach are smaller incisions, preserving anterior and posterior longitudinal ligaments, lower blood loss, shorter operative time, avoiding vascular and visceral complications, and shorter length of stay. We hypothesize that not every patient can be safely treated at the L4/5 level using the XLIF approach. The objective of this study was to radiographically (CT-scan) evaluate the accessibility of the L4/5 level using a lateral approach, considering defined safe working zones and taking into account the anatomy of the superior iliac crest.

Superior clinical results and higher satisfaction after customized compared with conventional TKA.

Investigation of functional outcome and patient`s satisfaction after implantation of a customized versus conventional TKA. In 31 consecutively enrolled patients with primary gonarthrosis, 33 customized TKA (custTKA) and in 31 patients, a conventional TKA (convTKA) was implanted. Perioperative and postoperative management were identical.

Minimally invasive hallux valgus correction with Internal Hallux Fixator® - A comparative cadaver study.

Background: The Internal Hallux Fixator® (IHF®; Waldemar Link, Hamburg, Germany) was designed for open surgical hallux valgus correction. It allows a defined lateralisation of the first metatarsal head after V-shaped, Chevron-like distal metatarsal osteotomy in order to correct mild to middle hallux valgus deformities. The intramedullary fixation provides dynamic compression of the osteotomy and thus postoperative full weight bearing mobilization is an integral part of the therapy.

[Plantar fascia release and decompression of the first branch of the lateral plantar nerve (Baxter's nerve)].

Objective: Treatment of chronic plantar fasciitis and release of the first calcaneal branch of the lateral plantar nerve (Baxter's nerve).

Indications: Chronic plantar fasciitis, compression of the first calcaneal branch of the lateral plantar nerve (Baxter's nerve).

Contraindications: General medical contraindications to surgical interventions, infection.

Comparison of medial distal tibial angle in EOS imaging and weightbearing X-ray.

Background: The medial distal tibial angle (MDTA) is used for measurement of ankle alignment. Standard to measure MDTA is weightbearing mortise view. EOS imaging becomes more popular for limb alignment analysis using low-dose radiation.

Minimally Invasive vs Open Akin Osteotomy.

Background: Minimally invasive techniques of Akin osteotomy have grown in popularity, as early results suggest faster recovery, earlier return to work, and minimized wound healing problems. Preserving lateral cortex integrity during first phalanx osteotomy thereby presents a challenge because of the lack of direct visual control. This retrospective comparative study investigated clinical and radiographic outcomes of minimally invasive and open Akin osteotomy with different fixation methods and analyzed whether or not intraoperative violation of the lateral cortex caused loss of correction or delayed bone healing.

[Etiology, pathogenesis, clinical features, diagnostics and conservative treatment of adult flatfoot].

Background: On average, one in six adults is affected by an acquired flatfoot. This foot deformity is characterized by its progression of stages and in 10% of cases causes complaints that require treatment. Untreated, the loss of walking ability may result in the final stage.

[Adult acquired flatfoot deformity-operative management for the early stages of flexible deformities].

Flexible adult acquired flatfoot deformity includes a wide spectrum of fore- and hindfoot pathologies and remains a complex clinical challenge. Clinical history, inspection and accurate physical examination are paramount for diagnosis. Early stages of flexible adult acquired flatfoot deformity present with increased hindfoot valgus and medial arch collapse.

Anatomical study of Lapidus arthrodesis using two different plantar plate systems.

Background: First tarsometatarsal arthrodesis (modified Lapidus procedure) constitutes a sufficient treatment for moderate to severe hallux valgus deformity and first ray instability. The plantar plate arthrodesis was shown to provide superior mechanical stability and less postoperative complications than screw fixation or dorsal plating. Nevertheless, the in-brought hardware may cause irritation of the tibialis anterior or peroneus longus tendon requiring explantation of the material in some cases.

Biomechanical results of percutaneous calcaneal osteotomy using two different osteotomy designs.

Background: Percutaneous osteotomy of calcaneus has been proposed to reduce the complication rate and became more and more popular. The bone cut can be performed as a straight or chevron-like (V) osteotomy using a Shannon burr. Comparative studies of straight or V-osteotomy as like as one or two screws in percutaneous calcaneal osteotomies are missing in the literature.

Posterolateral plate fixation with Pantalarlock® is more stable than nail fixation in tibiotalocalcaneal arthrodesis in a biomechanical cadaver study.

Background: Despite the promising results of ankle joint arthroplasty, the tibiotalocalcaneal (TTC) arthrodesis remains an established procedure in treatment of combined pathology of the ankle and subtalar joint. Despite the promising results in biomechanical investigations, nonunion rates of up to 24% are described in recent studies. The objective of this work was a comparative study of the biomechanical properties of the posterolateral plate fixation with retrograde intramedullary nail fixation.

Pain on the Plantar Surface of the Foot.

Background: Plantar fasciitis (PF) is characterized by pain on weight-bearing in the medial plantar area of the heel, metatarsalgia (MTG) by pain on the plantar surface of the forefoot radiating into the toes. Reliable figures on lifetime prevalence in Germany are lacking.

Methods: This review is based on pertinent publications retrieved from a selective search in PubMed, on guidelines from Germany and abroad, and on the authors' clinical experience.

Comparative Results of Percutaneous Calcaneal Osteotomy in Correction of Hindfoot Deformities.

Background:: Calcaneal osteotomies are often required in the correction of hindfoot deformities. The traditional open techniques, which include a lateral or oblique incision, are occasionally associated with wound healing problems and neurovascular injury.

Methods:: A total of 122 consecutive patients who underwent a calcaneal osteotomy for hindfoot realignment treatment were included.

Posterolateral plate fixation with Talarlock is more stable than screw fixation in ankle arthrodesis in a biomechanical cadaver study.

Background: A number of studies report on limitations of the screw arthrodesis in severe malalignment of the hindfoot, neuropathic deformity, poor bone quality and osteoporosis.

Methods: Fourteen anatomically correct polyurethane foam models of the right leg (Sawbones Europe, Malmö, Sweden) and eighteen fresh-frozen human lower leg specimens (9 pairs) were used for the comparative biomechanical testing.

Results: The statistical analysis of the stiffness of the fixation developed a significant difference in favor of the plate in all test directions.

Preliminary results of a plantar plate for Lapidus arthrodesis.

The TMT I arthrodesis is an established procedure for the correction of hallux valgus deformity associated with the instability of the TMT-I joint. A risk of transfer metatarsalgia is reported in the literature associated with persistant elevation of MT-I. Detailed information for ideal positioning of the arthrodesis is missing so far.

Influence of varus/valgus positioning of the Nanos® and Metha® short-stemmed prostheses on stress shielding of metaphyseal bone.

The aim of this study was to analyze bone remodeling around the Nanos® (Smith & Nephew) and Metha® (Aesculap AG) implants as a function of varus/valgus stem positioning. In 75 patients with diagnosed coxarthrosis, either Nanos® (n= 51) or Metha® (n= 24) prostheses were implanted. Digital assessment of plain radiographs immediately, 97 days, and 381 days after THA showed no clinically-relevant migration, angulation, or change in offset and center of rotation.

Immediate fullweightbearing after tarsometatarsal arthrodesis for hallux valgus correction--Does it increase the complication rate?

Background: The arthrodesis of the first tarsometatarsal joint has a high correction potential in the treatment of hallux valgus deformity. Compared to distal correction procedures, a pseudarthrosis rate of 12-20% is quoted, however. In a prospective study the results of two different treatment procedures after correction arthrodesis were compared.