Focal Anatomic Patellofemoral Inlay Resurfacing: Theoretic Basis, Surgical Technique, and Case Reports

Davidson, Philip A.; Rivenburgh, Dennis W.

doi:10.1016/j.ocl.2008.02.003

Cited by 42 publications

(28 citation statements)

References 35 publications

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“…54,95,180,404,437 Th is prospective study describes the results of a metal implant designed for the talus. Th e presented outcomes show that patients generally benefi t from the procedure.…”

Section: Discussionmentioning

confidence: 99%

“…411 Promising short-term clinical results have been reported of other designs of the implant for the treatment of various human joints. 95,180,404,437 Two biomechanical cadaveric studies provided foundations for use of the talus implant in the ankle joint. 17,411 These studies showed that recessing the implant slightly relative to the adjacent cartilage level leads to acceptable contact stresses in the talocrural joint and is beneficial compared to leaving it proud.…”

Section: Introductionmentioning

confidence: 99%

“…Other designs of this prosthetic implant have been used clinically for diff erent joint surfaces, including the fi rst metatarsal head, 180 femoral head, 437 humeral head, 404 and patella. 95 Although the short-term clinical outcome of these designs is promising, it remains to be investigated whether the implant is eff ective for the treatment of OCDs of the talus, in terms of reducing pain and preventing cyst formation.…”

mentioning

confidence: 99%

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Treatment of osteochondral defects of the talus

Bergen

Leeuw

Dijk

2008

Revue de Chirurgie Orthopédique et Réparatrice de l'Appareil Mo

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Treatment of osteochondral defects of the talus

Bergen

Leeuw

Dijk

2008

Revue de Chirurgie Orthopédique et Réparatrice de l'Appareil Mo

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“…Focal resurfacing with use of a metallic cap has been shown to be a promising alternative approach with which to avoid or delay joint replacement in middle-aged and older patients [14][15][16][17][18][19] . However, recent animal studies have suggested that articular damage can be associated with these implants [20][21][22] , especially in the case of surface-proud implantation.…”

mentioning

confidence: 99%

Effect of Implantation Accuracy on Ankle Contact Mechanics with a Metallic Focal Resurfacing Implant

Anderson¹,

Tochigi²,

Rudert³

et al. 2010

The Journal of Bone and Joint Surgery-American Volume

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“…While requiring further analysis, this paradigmatic result can arise questions about the reliability of traditional severity classification, based on 2D morphological signs measured on X-ray images, indicating both uncertainty in the grade definition and difficulty to manually discriminate the grades, although performed by radiologic experts, as already extensively reported in the literature. [31] …”

Section: Final Remarksmentioning

confidence: 99%

Patient-specific modeling of the trochlear morphologic anomalies by means of hyperbolic paraboloids

Cerveri

Baroni

Confalonieri

et al. 2016

Computer Assisted Surgery

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Diagnostic and therapeutic purposes are issuing pressing demands to improve the evaluation of the dysplasia condition of the femoral trochlea. The traditional clinical assessment of the dysplasia, based on Dejour classification, recognized 4 increasing (A, B, C, D) levels of severity. It has been extensively questioned in the literature that this classification methodology can be defective suggesting that quantitative measures can ensure more reliable criteria for the dysplasia severity assessment. This study reports on a novel technique to model the trochlear surface (TS), digitally reconstructed by 3D volumetric imaging, using three hyperbolic paraboloids (HP), one to describe the global trochlear aspect, two to represent the local aspects of the medial and lateral compartments, respectively. Results on a cohort of 43 patients, affected by aspecific anterior knee pain, demonstrate the consistency of the estimated model parameters with the morphologic aspect of the TS. The obtained small fitting error (on average lower than 0.80 mm) demonstrated that the ventral aspect of the trochlear morphology can be modeled with high accuracy by HPs. We also showed that HP modeling provides a continuous representation of morphologic variations in shape parameter space while we found that similar morphologic anomalies of the trochlear aspect are actually attributed to different severity grades in the Dejour classification. This finding is in agreement with recent works in the literature reporting that morphometric parameters can only optimistically be used to discriminate between the Grade A and the remaining three grades. In conclusion, we can assert that the proposed methodology is a further step toward modeling of anatomical surfaces that can be used to quantify deviations to normality on a patient-specific basis.

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Focal Anatomic Patellofemoral Inlay Resurfacing: Theoretic Basis, Surgical Technique, and Case Reports

Cited by 42 publications

References 35 publications

Treatment of osteochondral defects of the talus

Treatment of osteochondral defects of the talus

Effect of Implantation Accuracy on Ankle Contact Mechanics with a Metallic Focal Resurfacing Implant

Patient-specific modeling of the trochlear morphologic anomalies by means of hyperbolic paraboloids

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