Bending, Torsional, and Pullout Strength of Compression Screws in Cadaver Foot and Ankle Specimens

Author(s):  
Ferris M. Pfeiffer ◽  
Paul S. Shurnas ◽  
Dennis L. Abernathie ◽  
James A. Ronan

It has been well supported in the literature that using compression screws is the preferred method to achieve fixation of an arthrodesis [1, 2]. Indications for isolated subtalar arthrodesis include trauma, arthritis, talocalcaneal coalition, adult acquired flatfoot, posterior tibial tendon dysfunction, and Charcot neuroarthropathy [3, 4]. With the increase in bone screw shapes and designs, there is a desire to achieve the best compression generated by a type of screw so as to promote excellent bone healing and outcome for the patient; this will also allow the stability of the construct achieved by the screw and its placement to be determined. As indicated by Wheeler, et. al.[5] screw choice, compression, stability and loading can be very important when it comes to healing of fractures in small bones.

Author(s):  
Ferris M. Pfeiffer ◽  
Paul S. Shurnas ◽  
Dennis L. Abernathie ◽  
James A. Ronan

It has been well supported in the literature that using compression screws is the preferred method to achieve fixation of an arthrodesis [1, 2]. Indications for isolated subtalar arthrodesis include trauma, arthritis, talocalcaneal coalition, adult acquired flatfoot, posterior tibial tendon dysfunction, and Charcot neuroarthropathy [3, 4]. With the increase in bone screw shapes and designs, there is a desire to achieve the best compression generated by a type of screw so as to promote excellent bone healing and outcome for the patient; this will also allow the stability of the construct achieved by the screw and its placement to be determined. As indicated by Wheeler, et. al. [5] screw choice, compression, stability and loading can be very important when it comes to healing of fractures in small bones.


2021 ◽  
Author(s):  
Takeshi Mochizuki ◽  
Yuki Nasu ◽  
Koichiro Yano ◽  
Katsunori Ikari ◽  
Ryo Hiroshima ◽  
...  

ABSTRACT Objectives Posterior tibial tendon dysfunction (PTTD) affects the support of the medial longitudinal arch and stability of the hindfoot. The purpose of this study was to assess the relationships of PTTD with foot and ankle functions and foot deformities in patients with rheumatoid arthritis (RA). Methods A total of 129 patients (258 feet) who underwent magnetic plain and contrast-enhanced magnetic resonance imaging were enrolled in this study. Positive magnetic resonance imaging findings were defined as tenosynovitis and incomplete and complete rupture of the posterior tibial tendon. Foot and ankle functions were assessed using the Japanese Society for Surgery of the Foot standard rating system for the RA foot and ankle scale (JSSF-RA) and self-administered foot evaluation questionnaire. Plain radiographs were examined for the hallux valgus angle, first metatarsal and second metatarsal angle, lateral talo-first metatarsal angle, and calcaneal pitch angle. Results PTTD was associated with motion in the JSSF-RA (p = .024), activities of daily living in JSSF-RA (p = .017), and pain and pain-related factors in the self-administered foot evaluation questionnaire (p = .001). The calcaneal pitch angle was significantly lower in the feet with PTTD than in those without PTTD (median: 16.2° vs. 18.0°; p = .007). Conclusions The present study shows that PTTD was associated with foot and ankle functions and flatfoot deformity. Thus, a better understanding of PTTD in patients with RA is important for the management of foot and ankle disorders in clinical practice.


2019 ◽  
Vol 5 (1) ◽  
pp. 60-65
Author(s):  
Henry Ricardo Handoyo ◽  
Andryan Hanafi Bakri ◽  
Andri Primadhi Primadhi

Introduction: Posterior tibial tendon dysfunction is one of the most common, problems of the foot and ankle. Tenosynovitis of the posterior tibial tendon (PTT) is an often unrecognized form of PTT dysfunction. Case: A 54-year-old woman presented with left ankle pain that began while morning walk three days prior. She noted that the left ankle hurt with even light touch and the pain was unrelieved with sodium diclofenac. She denied any history of trauma. She was seen in the outpatient clinic for this condition. On examination, a three centimeter area of pain was found posterior to the medial malleolus and parallel to the PTT. She also had a stage I flat foot and mild soft tissue swelling around medial malleolus region on her radiograph examination. Ultrasound examination was done with the result of anechoic fluid visible in the peritendinous space around the PTT. The patient received diagnosis of PTT tenosynovitis, with the foot and ankle disability index (FADI) score was 58.7. Platelet rich plasma (PRP) injection was done twice with an interlude of two weeks. The pain subsided and the following FADI score was 84.6. Outcome: Patient showed improvement in her left ankle PTT tenosynovitis after two PRP injection. Conclusion: This case report highlights the efficacy of PRP as a modality in managing PTT tenosynovitis.


2011 ◽  
Vol 18 (1) ◽  
pp. 55-59
Author(s):  
Sargon Konstantinovich Tamoev ◽  
N V Zagorodniy ◽  
V G Protsko ◽  
E M Sultanov ◽  
Z Kh Khamokov ◽  
...  

The purpose of the study was to evaluate the efficacy of subtalar arthroeresis for II stage tibial tendon dysfunction by Johnson and Storm classification. From November 2007 to August 2009, 18 patients with that pathology were operated on. After implantation of Kalix® II endorthesis the plasty of posterior tibial tendon was performed. The results were assessed by American Orthopaedic Foot and Ankle Society (AOFAS) scores system. After treatment average estimate by AOFAS increased from 47.2 before operation to 79.0 after surgery, pain index from 16.3 to 30.0, foot function from 28.7 to 41.6, foot position from 2.6 to 8.4. According to X-ray data the longitudinal arch angle decreased by 14.3° at an average and talar-calcaneal angle by 8°. Study results showed that technique of subtalar arthrodesis was effective enough for correction of flat foot resulted from II stage posterior tibial tendon dysfunction. Combination of that technique with tendon plasty ensured the full-value reconstruction of the foot.


2008 ◽  
Vol 27 (2) ◽  
pp. 331-339 ◽  
Author(s):  
Mary Ellen Ness ◽  
Jason Long ◽  
Richard Marks ◽  
Gerald Harris

2021 ◽  
Vol 15 (3) ◽  
pp. 265-268
Author(s):  
Daniel Saraiva ◽  
Markus Knupp ◽  
André Sá Rodrigues ◽  
Tiago Mota Gomes ◽  
Xavier Martin Oliva

We present a case of a rheumatoid patient presenting with acute signs of posterior tibial tendon dysfunction (PTTD). Magnetic resonance imaging (MRI) results were inconclusive regarding the grade of posterior tibial tendon (PTT) tear. We performed posterior tibial tendoscopy, releasing all tendon adherences, and accomplished complete synovectomy. By the end of the procedure, we observed PTT integrity, normal excursion, and mild tendinosis. At 24-month follow-up, the Visual Analog Scale for pain (VAS-Pain) decreased from 9 (preoperatively) to 1. The Foot and Ankle Outcome Score (FAOS) increased from 16% (preoperatively) to 94%. Clinically, the patient had a symmetric bilateral heel rise test and no pain over the course of the PTT. A standard radiographic assessment demonstrated a normal foot arch and hindfoot alignment. This report illustrates how posterior tibial tendoscopy can simultaneously provide accurate diagnosis and surgically address acute PTTD on a rheumatoid patient, relieving symptoms and improving midterm clinical scores. Level of Evidence V; Therapeutic Studies; Expert Opinion.


Author(s):  
Matthew C. Solan ◽  
Mark S. Davies

♦ Treatment of tendon and ligament disorders of the foot depends on accurate clinical diagnosis, supported by investigation♦ The treatment of posterior tibial tendon dysfunction is guided by classification♦ Ankle ligament injuries only need surgical treatment if very severe or chronic♦ Achilles tendonitis is usually treated conservatively♦ Rupture of the Achilles tendon may be treated operatively or conservatively.


2003 ◽  
Vol 24 (8) ◽  
pp. 600-606 ◽  
Author(s):  
Ramón Viladot ◽  
Miquel Pons ◽  
Fernando Alvarez ◽  
Jorge Omaña

Background: The purpose of this study was to evaluate preliminary results with Kalix® subtalar arthroereisis in sinus tarsi for stage II posterior tibial tendon dysfunction. Methods: Twenty-one patients with stage II posterior tibial dysfunction, according to Johnson and Storm, underwent surgical treatment between July 1999 and December 2000. All patients were evaluated clinically using the America Orthopaedic Foot and Ankle Society (AOFAS) hindfoot-ankle score. We performed a tendon repair depending on the type and location of the injury and implanted a Kalix® endorthesis in the sinus tarsi. Results: Nineteen patients attended for clinical review with an average follow-up of 27.31 months (range, 19–36). AOFAS scale improved from a preoperative average of 47.2 to an average of 81.6 at revision. The most important improvement was observed in pain (16.3 preoperative to 31.6 postoperative). Two cases required removal of the endorthesis for pain, probably because the endorthesis was too big, without any loss of correction. Patient satisfaction was “satisfied” or “very satisfied” in 17/19. All except three patients would have elected to undergo the same procedure. Conclusions: Subtalar arthroereisis by means of implantation of a Kalix® endorthesis in the sinus tarsi, with prior correction of the deformity and tendon repair, offers an alternative to bone operations such as calcaneal osteotomies, lengthening the external column, or arthodesis in patients with stage II posterior tibial dysfunction.


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