Table 1 Clinical and radiological data from the tennis players.

Patient	Age	Sex	Level	Practice time	Painful stroke	MRI type9	MRI findings	RTP
1	34	M	Amateur	6	Serve and forehand	3	Thick and irregular periosteum medullary oedema in the middle and distal humerus in T1 and T2 sequences, with biceps muscle oedema around the periosteal injury in the distal third	4
2	25	M	Amateur	8	Serve	2	Irregular periosteum with liquid, focal medullary oedema in the middle and distal third of the humeral shaft on T2 and STIR sequences	3
3	15	M	Elite Junior	12	Serve and forehand	1	Periosteum with liquid in the under surface part, mild bone oedema in the anterior and lateral distal humerus	2
4	28	M	Amateur	8	Serve	2	Irregular periosteal aspect, with mild bone oedema in the posterior and medial distal humerus	4
5	16	F	Elite junior	12	Serve and forehand	1	Periosteal with liquid in the posterior and medial part of the distal humerus, small amount of medullary oedema on STIR sequences	2

Practice time: h/week of on court practice time. MRI type according to Frederickson et al, described by Young and McAllister.¹¹ STIR, (short T1 inversion recovery); T1 and T2, sequences of the MRI exam performed; RTP: return to play (weeks).