Return to Play Prediction Accuracy of the MLG‑R Classification System for Hamstring Injuries in Football Players: A Machine Learning Approach

Xavier Valle, Sandra Mechó, Eduard Alentorn-Geli, Tero A. H. Järvinen, Lasse Lempainen,
Ricard Pruna, Joan C. Monllau, Gil Rodas, Jaime Isern-Kebschull, Mourad Ghrairi,
Xavier Yanguas, Ramon Balius, Adrian Martinez-De la Torre

Sports Medicine 2022

A systematic review of surgical intervention in the treatment of hamstring tendon ruptures: current evidence on the impact on patient outcomes

Aleksi Jokela, Antti Stenroos, Jussi Kosola, Xavier Valle and Lasse Lempainen

Annals of Medicine 2022


Tendon injuries in football players: FC Barcelona 2021 tendon guide

Jill Cook, Gil Rodas, Alan McCall, Ricard Pruna, Rochelle Kennedy and Lluís Til.
Dr Lasse Lempainen is a corresponding author relating to the surgical chapter.

The FC Barcelona tendon guide

Tears of biceps femoris, semimembranosus, and semitendinosus are not equal — A new individual muscle-tendon concept in athletes

L. Lempainen, J. Kosola, R. Pruna, J-J. Sinikumpu, X. Valle, O. Heinonen, S. Orava, N. Maffulli

Scandinavian Journal of Surgery 2021


Book chapter: Proximal hamstring repair / reinsertion: Open surgery technique

Lempainen L, Kosola J, Orava S.

N. Bonin et al. (eds.), Hip Preservation Surgery. Open, Arthroscopic, and Endoscopic Techniques. ESSKA 2020


Muscle Injury Guide

R. Pruna et al. (eds). Lasse Lempainen as a section leader; surgical treatment.

Central Tendon Injuries of Hamstring Muscles: Case Series of Operative Treatment.

Lempainen L, Kosola J, Pruna R, Puigdellivol J, Sarimo J, Niemi P, Orava S.

Orthop J Sports Med. 2018

Operative treatment for the painful posterior thigh after hamstring autograft harvesting.

Laakso M, Kosola J, Niemi P, Mäkelä K, Ranne J, Orava S, Lempainen L.

Muscles Ligaments Tendons J. 2018

Operative treatment of pelvic apophyseal avulsions in adolescent and young adult athletes: a follow-up study.

Sinikumpu JJ, Hetsroni I, Schilders E, Lempainen L, Serlo W, Orava S.

Eur J Orthop Surg Traumatol. 2018

Surgical excision of symptomatic mature posttraumatic myositis ossificans: characteristics and outcomes in 32 athletes.

Orava S, Sinikumpu JJ, Sarimo J, Lempainen L, Mann G, Hetsroni I.

Knee Surg Sports Traumatol Arthrosc. 2017


Lasse Lempainen
ortopedian erikoislääkäri
urheiluortopedian dosentti

Lasse Lempainen (Pihlajalinna)