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Hip preservation surgery is now an established part of orthopedic surgery and sports medicine. This report describes the key findings of the 11th Annual Scientific Meeting of International Society for Hip Arthroscopy—the International Hip Preservation Society—in Madrid, Spain from 16 to 19 October 2019. Lectures, seminars and debates explored the most up-to-date and expert views on a wide variety of subjects, including: diagnostic problems in groin pain, buttock pain and low back pain; surgical techniques in acetabular dysplasia, hip instability, femoroacetabular impingement syndrome, labral repair and reconstruction, cartilage defects, adolescent hips and gluteus medius and hamstring tears; and new ideas about femoral torsion, hip–spine syndrome, hip capsule surgery, impact of particular sports on hip injuries, registries, robotics and training for hip preservation specialists. Surgeons, sports physicians, radiologists and physiotherapists looking after young people with hip problems have an increasingly sophisticated armoury of ideas and techniques with which to help their patients. The concept of hip preservation has developed incredibly fast over the last decade; now it is clear that the best results can only be achieved by a multidisciplinary team working together. The 2020s will be the decade of ‘Teamwork in Hip Preservation’.

Thumb arthroscopy and arthroscopically assisted treatment of the thumb are safe and effective techniques. This report describes technical innovations particularly useful in the surgical performance of arthroscopically assisted treatment of basal joint arthritis. (1) With adduction and hyperextension of the thumb, the bony landmarks are easier to palpate and a volar radial soft spot is clearly defined between the trapezium and metacarpal (i.e., the adduction-hyperextension maneuver). (2) After the distension of the joint with saline solution, the thumb automatically abducts and flexes if the capsule has been distended successfully (i.e., the flexion-abduction sign). (3) The radial and ulnar borders of the proximal phalanx and the local tendons can serve as external landmarks if fluid extravasation occurred. (4) Finally, the simultaneous use of the 3 portals described in the first carpometacarpal joint is very effective for better visualization and performance of the procedures in this joint (i.e., the 3-portal technique). We propose a new description of the portals for carpometacarpal arthroscopy as follows: (1) volar portal, which is just distal to the oblique ridge of the trapezium following a line referencing the radial edge of the flexor carpi radialis; (2) ulnar portal, which is just ulnar to the extensor pollicis brevis; and (3) radial portal, which is just radial to the abductor pollicis longus.