BACKGROUND: Posttraumatic anteroinferior shoulder dislocations with concomitant glenoid bone loss show high recurrence rates. The open J-bone graft technique for implant-less anatomic restoration of bony glenoid structure has previously been described, whereas results of arthroscopic techniques are currently not available. PURPOSE: To evaluate clinical and radiological outcome after arthroscopic anatomic reconstruction of the glenoid for recurrent anteroinferior glenohumeral instability. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: Fifteen shoulders of 14 patients with recurrent anteroinferior shoulder instability were prospectively followed after glenoid reconstruction with a modified arthroscopic, implant-free J-bone graft. Preoperatively, the instability severity index score was documented. Patients were followed for a minimum of 2 years using the Rowe score and the Constant score. Subjective outcome was assessed using a visual analog scale (VAS) for pain and the subjective shoulder value for sports (SSVS); satisfaction with procedure outcome was also rated. Range of motion was recorded. Incidence of recurrent instability, defined as dislocation, subluxation, or persistent apprehensiveness, was documented. Pre- and postoperative (1 day and 3, 12, and 24 months) computed tomographic images were used to evaluate glenoid bone loss, reconstruction of the glenoid, and graft remodeling. RESULTS: All preoperative scores (Rowe score: 57.6 ± 14.4; Constant score: 70.9 ± 8.9; VAS: 4.4 ± 2.6; SSVS: 31.4% ± 19.5%) were significantly (P ≤ .02) improved at final follow-up (Rowe score: 98.6 ± 1.5; Constant score: 96.3 ± 3.9; VAS: 0.2 ± 0.6; SSVS: 95.6% ± 3.8%). The preoperative glenoid area (82.1% ± 4.5%) was significantly increased immediately after surgery to 99.2% ± 6.6% (P < .001). After a physiological remodeling process, the glenoid area remained significantly increased at the latest follow-up (89.5 ± 3.2%, P < .001). J-bone grafting successfully restored glenoid concavity by significantly increasing concavity extent and depth from preoperative (19.8 ± 2.1 and 0.9 ± 0.6 mm, respectively) to postoperative (24.0 ± 2.1 and 2.1 ± 0.8 mm, respectively) (P < .001). There were no recurrent instabilities. One traumatic graft fracture occurred during the follow-up period. CONCLUSION: The arthroscopic J-bone graft technique permits minimally invasive reconstruction of anteroinferior glenoid defects and provided excellent early clinical outcome without recurrent instability in posttraumatic shoulder dislocations. A physiological remodeling process leads to restoration of a more natural glenoid anatomy.
BACKGROUND:Posttraumatic anteroinferior shoulder dislocations with concomitant glenoid bone loss show high recurrence rates. The open J-bone graft technique for implant-less anatomic restoration of bony glenoid structure has previously been described, whereas results of arthroscopic techniques are currently not available. PURPOSE: To evaluate clinical and radiological outcome after arthroscopic anatomic reconstruction of the glenoid for recurrent anteroinferior glenohumeral instability. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: Fifteen shoulders of 14 patients with recurrent anteroinferior shoulder instability were prospectively followed after glenoid reconstruction with a modified arthroscopic, implant-free J-bone graft. Preoperatively, the instability severity index score was documented. Patients were followed for a minimum of 2 years using the Rowe score and the Constant score. Subjective outcome was assessed using a visual analog scale (VAS) for pain and the subjective shoulder value for sports (SSVS); satisfaction with procedure outcome was also rated. Range of motion was recorded. Incidence of recurrent instability, defined as dislocation, subluxation, or persistent apprehensiveness, was documented. Pre- and postoperative (1 day and 3, 12, and 24 months) computed tomographic images were used to evaluate glenoid bone loss, reconstruction of the glenoid, and graft remodeling. RESULTS: All preoperative scores (Rowe score: 57.6 ± 14.4; Constant score: 70.9 ± 8.9; VAS: 4.4 ± 2.6; SSVS: 31.4% ± 19.5%) were significantly (P ≤ .02) improved at final follow-up (Rowe score: 98.6 ± 1.5; Constant score: 96.3 ± 3.9; VAS: 0.2 ± 0.6; SSVS: 95.6% ± 3.8%). The preoperative glenoid area (82.1% ± 4.5%) was significantly increased immediately after surgery to 99.2% ± 6.6% (P < .001). After a physiological remodeling process, the glenoid area remained significantly increased at the latest follow-up (89.5 ± 3.2%, P < .001). J-bone grafting successfully restored glenoid concavity by significantly increasing concavity extent and depth from preoperative (19.8 ± 2.1 and 0.9 ± 0.6 mm, respectively) to postoperative (24.0 ± 2.1 and 2.1 ± 0.8 mm, respectively) (P < .001). There were no recurrent instabilities. One traumatic graft fracture occurred during the follow-up period. CONCLUSION: The arthroscopic J-bone graft technique permits minimally invasive reconstruction of anteroinferior glenoid defects and provided excellent early clinical outcome without recurrent instability in posttraumatic shoulder dislocations. A physiological remodeling process leads to restoration of a more natural glenoid anatomy.
Authors: Ron Gilat; Stephanie E Wong; Ophelie Lavoie-Gagne; Eric D Haunschild; Derrick M Knapik; Michael C Fu; Jorge Chahla; Brian Forsythe; Brian J Cole Journal: Knee Surg Sports Traumatol Arthrosc Date: 2020-08-04 Impact factor: 4.342
Authors: Hassanin Alkaduhimi; James W Connelly; Derek F P van Deurzen; Denise Eygendaal; Michel P J van den Bekerom Journal: Arthrosc Sports Med Rehabil Date: 2021-04-06