Long-Term Prognosis for Jumper's Knee in Male Athletes: Prospective Follow-up Study

Kettunen, Jyrki; Kvist, M; Alanen, Erkki; Kujala, Urho M.

doi:10.1177/03635465020300051001

Cited by 239 publications

(195 citation statements)

References 18 publications

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“…Many factors have been suspected to predispose patients to this condition [2] by increasing the patellar tendon overload. The high chronic repetitive loading stimulates the local release of cytokines, with an autocrine and paracrine modulation of cell activity [14], that fails to adapt to continued abusive load and irritation and leads to intratendinous damage.…”

Section: Discussionmentioning

confidence: 99%

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Use of platelet-rich plasma for the treatment of refractory jumper’s knee

Filardo

Kon

Villa³

et al. 2009

International Orthopaedics (SICOT)

285

205

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The aim of this study was to evaluate the efficacy of multiple platelet-rich plasma (PRP) injections on the healing of chronic refractory patellar tendinopathy after previous classical treatments have failed. We treated 15 patients affected by chronic jumper's knee, who had failed previous nonsurgical or surgical treatments, with multiple PRP injections and physiotherapy. We also compared the clinical outcome with a homogeneous group of 16 patients primarily treated exclusively with the physiotherapy approach. Multiple PRP injections were performed on three occasions two weeks apart into the site of patellar tendinopathy. Tegner, EQ VAS and pain level were used for clinical evaluation before, at the end of the treatment and at six months follow-up. Complications, functional recovery and patient satisfaction were also recorded. A statistically significant improvement in all scores was observed at the end of the PRP injections in patients with chronic refractory patellar tendinopathy and a further improvement was noted at six months, after physiotherapy was added. Moreover, comparable results were obtained with respect to the less severe cases in the EQ VAS score and pain level evaluation, as in time to recover and patient satisfaction, with an even higher improvement in the sport activity level achieved in the PRP group. The clinical results are encouraging, indicating that PRP injections have the potential to promote the achievement of a satisfactory clinical outcome, even in difficult cases with chronic refractory tendinopathy after previous classical treatments have failed.

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Section: Discussionmentioning

confidence: 99%

“…Epidemiological evaluations showed that the average duration of substantial pain problems and reduced function is nearly three years [1] and that at 15 years' follow-up 53% of the subjects reported quitting their sports career due to the damaged knee [2].…”

Section: Introductionmentioning

confidence: 99%

Use of platelet-rich plasma for the treatment of refractory jumper’s knee

Filardo

Kon

Villa³

et al. 2009

International Orthopaedics (SICOT)

285

205

View full text Add to dashboard Cite

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“…Prognosis is poor (Kettunen, Kvist, Alanen, & Kujala, 2002) and treatment strategy and effectiveness is debated (Cook & Khan, 2001;Larsson, Kall, & NilssonHelander, 2012;Visnes & Bahr, 2007). This highlights the importance of preventing the initial development of patellar tendinopathy, an approach that will most likely have to include restrictions in training volume (Visnes & Bahr, 2013), and possibly also in jump frequency (Bahr & Bahr, 2014).…”

Section: Introductionmentioning

confidence: 99%

Application of a tri-axial accelerometer to estimate jump frequency in volleyball

Jarning

Mok

Hansen

et al. 2015

Sports Biomechanics

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This file was dowloaded from the institutional repository Brage NIH -brage.bibsys.no/nih Jarning, J. M., Mok, K.-M., Hansen, B. H., Bahr, R. (2015 AbstractPatellar tendinopathy is prevalent among athletes, and most likely associated with a high jumping load. If methods for estimating jump frequency were available, this could potentially assist in understanding and preventing this condition. The objective of this study was to explore the possibility of using peak vertical acceleration (PVA) or peak resultant acceleration (PRA) measured by an accelerometer to estimate jump frequency. Twelve male elite volleyball players (22.5  1.6 yrs) performed a training protocol consisting of 7 typical motion patterns, including jumping and non-jumping movements. Accelerometer data from the trial were obtained using a tri-axial accelerometer. In addition, we collected video data from the trial. Jump-float serving and spike jumping could not be distinguished from non-jumping movements using differences in PVA or PRA. Furthermore, there were substantial inter-participant differences in both the PVA and the PRA within and across movement types (p<0.05). These findings suggest that neither PVA nor PRA measured by a tri-axial accelerometer is an applicable method for estimating jump frequency in volleyball. A method for acquiring real-time estimates of jump frequency remains to be verified. However, there are several alternative approaches, and further investigations are needed.Word count: 3317, including tables and figure legends

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“…In sports patients or professional athletes the impact on life and work is even greater, and the fast recovery of full efficiency and return to competition is of primary importance. Tissue repair in musculoskeletal injuries is often a slow and sometimes incomplete process, and the treatment options available may offer incomplete recovery and difficulties in returning to high activity level [2,3].…”

Section: Introductionmentioning

confidence: 99%

Regenerative medicine for the treatment of musculoskeletal overuse injuries in competition horses

Torricelli

Fini

Filardo

et al. 2011

International Orthopaedics (SICOT)

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Purpose Tissue repair in musculoskeletal injuries is often a slow and sometimes incomplete process. Regenerative medicine based on the use of growth factors (GFs) and cell therapy is aimed at improving the quality and speed of tendon and ligament healing. The aim of this study was to evaluate the potential for the administration of a combination of autologous platelet-rich plasma (PRP) and freshly isolated bone marrow mononucleated cells (BMMNCs) in 13 competition horses affected by overuse musculoskeletal injuries (suspensory ligament desmopathy and superficial flexor tendinopathy) and refractory to other therapies. Methods After ultrasonographic localisation of the lesion, the autologous BMMNC suspension and PRP were injected directly into the core lesion. BMMNC and platelet count as well as growth factors in PRP were measured to determine factors influencing the clinical outcome. Results Horses showed a marked improvement in their degree of lameness and 84.6% were able to return to competition. Among all the factors studied, the platelet concentration predicted the healing time: significantly faster recovery (p= 0.049) was observed in cases of PRP with more than 750× 10 3 /μl platelets. Conclusions Competition horses are involved in highly demanding activities, thus being a similar model for the high mechanical overload typical of human athletes. The promising results obtained suggest that this combined biological approach may be useful even for the treatment of recalcitrant overuse musculoskeletal injuries in highly demanding patients if the appropriate dose of cells and GFs is applied.

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Long-Term Prognosis for Jumper's Knee in Male Athletes: Prospective Follow-up Study

Abstract: Jumper's knee causes mild but long-lasting symptoms after an athletic career.

Cited by 239 publications

References 18 publications

Use of platelet-rich plasma for the treatment of refractory jumper’s knee

Use of platelet-rich plasma for the treatment of refractory jumper’s knee

Application of a tri-axial accelerometer to estimate jump frequency in volleyball

Regenerative medicine for the treatment of musculoskeletal overuse injuries in competition horses

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